The Tuned CivicX Experience & Reliability Thread (for all models)

gtman

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Everyone knows that tuning improves performance. But what about long term reliability and safety?

I created this thread to try to document just that and to get an overview of owner's overall tuning experiences.

If you currently have a tuned 10th gen (or were tuned in the past), help everyone in the community and add your car. It only takes a few minutes.

Includes Type R, Si, 1.5T and 2.0 NA. Every tuned car added helps build our tuning knowledge base and helps others decide if tuning is right for them.


Please use the format below when adding your car to the thread (my car used as an example):

Vehicle: 2017 Civic EX-L sedan

Total tuned time: 43 months

Tuned miles driven: 20,000+

Tuning device(s) used: Hondata CARB Flashpro; currently using KTuner V2

Tunes used: Hondata +6 and my own +7.5 tune; KTuner Dual Starter 21 w/aggressive quick adjustments; customized TSP Stage 1; Phearable Stage 1.5; currently using Phearable's 1.5R tune

Fuel used: Sunoco 93 Ultra (exclusively)

Additional related mods: PRL silicone hose / aFe Pro Dry S filter combo

Problems/issues: None

Driving style: Slightly speedy with aggressive bursts from time to time.

Tuning experience notes: I've never had a mod transform a car like tuning has. The main reason I tuned was to reduce the feeling of turbo and CVT lag when quickly going from light to heavy throttle. Tuning has definitely reduced the lag by maybe 90% and gives me a completely different driving experience. My car went from a peppy commuter to a bit of a sleeper and mpgs are only slightly lower since tuning (mostly due to a heavier foot). My current Phearable 1.5R is the best tune I've used so far. It's amazingly smooth.


At the end of your post, attach pics, timeslips, videos, dyno results, etc...

IMG_[z.jpg


Untitled 2.jpg


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Current thread stats and info (as of 10/24/21)

Tuned cars submitted: 812


1.5T Non-Si: 374; Si: 356; CTR: 59; 2.0 NA: 23

Total tuned miles driven: 11,641,450 (reported)
Most tuned miles: choo (139,000)
Cars with over 25,000 tuned miles: 118

Cars with major drivetrain failures:
18 (2.3%)
Failures by model: Si 4; Non-Si 14*; 2.0 NA 0; CTR 0
Failures by tune type: Base 8; OTS 3; Custom 7

Percentage of cars running reliably: 97.7%

Transmissions: CVT 283 (35%); Manual 529 (65%)
Base models: 70% CVT; 30% Manual
Upgraded clutches installed: 88 (16%)
CVT failure rate: 1.9% (5)

Hondata used for tuning: 175; Race (150
) Carb (25)
KTuner used for tuning: 674; V1.2 (381) V2 (293)
Other devices used: JB4 3; RaceChip 4; Motec 4
Usage rate: KTuner 79%; Hondata 20%; Other 1%

Pro custom tuned cars: 160 (20%)
Base tuned only cars: 248 (30%)

Most popular OTS tune: TSP Stage 1 (331) (41%)
Other popular OTS tune: Phearable Stage 1.5 (166)
Newest OTS tunes: TSP 1+ (45); Phearable 1.5R (34)

Recommended pro tuners: Derek Robinson, John Vega

Most popular fuel used: 93 octane (423; 52%)
Users adding 1-1.5 gallons E85: 97 (12%)
Flex fuel kits installed: 89 (11%)


No bolt ons added: 249 (30%)
Bolt ons added (not FBO): 397 (49%)
Cars with full bolt ons: 166 (21%)
Overall bolt on usage: 70%

Cold air intakes installed: 307 (38%)
Short ram intakes installed: 93 (12%)
Upgraded intercoolers installed: 254 (31%)

Aftermarket downpipes installed: 245 (30%)
Aftermarket frontpipes installed: 172 (21%)

Upgraded turbo inlet pipes installed: 71 (8%)
Upgraded turbos installed: 64 (7%)


Thread Notes: The most installed bolt ons are intakes (47%), intercoolers, downpipes and exhaust systems. Full bolts ons (for purposes of this thread) consist of downpipe, frontpipe, intercooler and intake at a minimum. "Base tuned only" means an out of the box KTuner or Hondata tune was used exclusively; no canned tune from Phearable, TSP or other vendors was ever used. In this thread, a drop-in filter/silicone hose combo is not considered a bolt on.

Major Failures: 1 car had a failed CVT (replaced under warranty). 1 car had a blown head gasket. 1 car blew a CVT pushing the car hard with an existing emissions problem. 1 car blew an engine running an E35/meth setup. 1 car blew an engine on the racetrack. 1 car blew an engine when the owner mistakenly used non-race gas with a tune designed specifically for race gas. 1 owner had major failures on a used car he purchased. 1 owner admitted he abused his car and destroyed his engine. 1 non-Si owner used a high power stage 2 Powermetric flex fuel tune w/full bolt ons and blew his motor. 1 owner had his CVT replaced under warranty (damaged by high power ethanol tune); the new CVT has been trouble free for 70,000+ tuned miles. 1 car threw a rod under "iffy" circumstances according to it's owner (possible abuse/user error). 1 owner destroyed his CVT after some track time in 100° weather. 1 car had a bent connecting rod but there were many factors (neglect) beyond the tune. 1 car bent a rod while doing WOT datalogging for a custom remote tune (had run meth for a short time as well). 1 car blew a CVT after serious neglect/abuse with numerous brake launches and burnouts. 1 Si blew a transmission running a high power flex fuel tune (full bolt ons). * 1 car in the thread (an aggressively driven FBO 1.5T European CR-V) cracked a cylinder sleeve and had an exhaust side turbo crack. 1 car bent rods and had bearing material in the oil.

Failure Notes: 63% of Non-Si engine failures occurred in hatchback models (mostly attributed to weaker rods). Only 3 off the shelf tuned cars have had failures. Only 1 car had a failure running a no bolt on setup. The Si failure rate is only 1.2%: engine (3); transmission (1). Non-Si 1.5T models have the most failures: engine (9); transmission (5).


Lesser Issues: There's been issues reported here and there with the stock clutch, CVT, some injector replacements and occasional fuel trim and knock control funkiness (depending on intake and gas used). There was one failed aftermarket turbo (W1). None of these issues were catastrophic.

Observations: From the thread data so far, running an OTS tune with no added bolt ons appears to be the safest setup. Properly tuned, adding bolt ons can be fairly reliable, too. The issues seem to happen most often when power output is pushed too high, owners attempt to self-tune too aggressively, or there is some abuse or neglect involved.

I often hear people say "it's a waste to tune a 1.5T CVT Civic". The idea being that the CVT can't handle high power. This video of a John Vega tuned Touring sedan might change that point of view. The fact is, a higher power tuned CVT can be reliable (limiting torque down low is key).




Updates: Since this is an ongoing experience and reliability thread, please add a new post from time to time. Use that new post to show additional tuned miles driven, changes to your tune or mod setup, any issues that occur and any new tuning experience notes. Update with a new post only. Don't edit and overwrite your original post.

Datalogs: As a thank you for having added your car here, I'll gladly read your datalogs (Hondata or KTuner). Just put them in a .zip file and make sure the KTuner logs are in .kdlg format only.

Summary: There is no doubt that a tune is the single best power-based performance modification. Having said that, tuning does add additional stress so be mindful of that. Long term reliability can be compromised if you tune for ultimate power on stock internals or abuse your ride. Do proper and timely maintenance, use common sense and your tuning experience should go well. - gtman
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xRiCeBoYx

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Vehicle: 2018 Sport Hatch CVT

Total tuned time: 8 months (1 year 11 months as of 1/10/21 - initial tune was 2/7/2019)

Total tuned mileage: appx 7000 miles (22.6k miles as of 1/10/21)

Tuning device(s) used: KTuner v1.2

Tunes used: Current configuration: Phearable 1.5T non-Si CVT tune (installed 1/10/21)
  • Past tunes used: Dual calibration 21/16.5psi starter, 18psi starter, 21psi starter, 21psi with quick enables
Fuel used: Costco, Sam's Club, Chevron, or Sinclair 91 octane, almost in that order. Shell 91, sometimes, too, but really only when I visit SoCal. Chevron gets bumped up in the list if I have grocery rewards banked up.

Additional engine mods: DIY SRI with AEM DryFlow filter, Mishimoto silicone induction hose, custom fiberglass filter heatshield (thermal reflective tape on the engine-facing sides), and ram induction ducting leading to the heatshield from the driver's side faux vent opened up. Also have a muffler delete with the stock resonator still in place.

Problems/issues: Maybe a heavier lead foot. Also smiles for miles. lol
12/28/2020 update, prolly should've added this a long time ago. Had some intermittent weirdness where, if at >70%ish throttle and KTuner boost measuring at >17psi, I'd get a fluttering sound. Almost as if the BPV was fluttering open and shut, very similar to when the BPV did it's recirc thing. This was back when I first bumped up to the 21psi starter tune with no quick enables. Frequency decreased significantly when I first used quick enables (the same settings as my map 2 - 21psi starter with improved responsiveness II/improved ramp II) and temporarily went away when I played around in S mode with paddle shifters. I haven't gotten that sound at all when I upped the turbo response/turbo ramp to my current map 3 settings (21psi starter with improved responsiveness III/aggressive ramp II). I tried every conceivable scenario to get it to flutter on my way home tonight (25 mile drive, 90% freeway), but got nothing but that sweet boost intake suction sound coming from my engine bay.

Driving style: Mostly chill driving, slightly spirited, especially on inclined highway on-ramps. Not a huge fan of driving on eco-mode. S mode if I'm feeling frisky. Paddle shifters if I'm feeling even friskier. Aim for good fuel economy when I'm feeling frugal.

edit: 11/27/2020, confirmed to pass Clark county (Las Vegas, NV) emissions testing with 21psi tune with quick enables
1127201139~3.jpg


edit 2: 12/28/20 added info in the "issues" section. Really a non-issue, but worth noting.

edit 3:1/10/21 Flashed Phearable 1.5T non-Si CVT tune today. I can definitely tell that torque is limited down low to protect the CVT. I also get it when I read that people have to depress the throttle a bit more than before. The way I look at it, yes, protects the CVT, but also makes [map 3] very daily drivable. It's just something I'll have to get used to. And man, acceleration is stupid smooth on this tune, definitely a lot less jerky than the starter 21psi tune (which I didn't think was terribly jerky until now). At >70% throttle, this thing pulls. Unfortunately, I never had the TSP tune, so I can't really compare it to that.
 
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amirza786

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Vehicle: 2018 Honda Civic Si Sedan

Total Tuned Time: 10 months

Total Tuned Mileage: 10k plus

Tuning Device: Ktuner v1.2

Tunes used: Ktuner base 19.5/23.5, TSP stage 1

Additional Mods: Mishimoto Intercooler, aFe Takeda SS 3" performance exhaust

Problems/Issues: None
 

TypeSiR

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Vehicle: 2016 Civic EX-T sedan, CVT (automatic)

Total tuned time: 2 years 5 months

Total tuned mileage: 20,000+ miles

Tuning device(s) used: Hondata FlashPro; KTuner V2

Tunes used: Hondata +6 psi, KTuner OTS Stage 2

Additional engine mods: None

Problems/issues: None / uncontrollable laughing disorder when behind the wheel :)

Driving style: Granny
 
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SiFever

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Vehicle: 2019 Civic Si

Total tuned time: 0 months

Total tuned mileage: 0 miles

Tuning device(s) used: Nuthin

Tunes used: None

Additional engine mods: Bone Stock motor, OEM everything.

Problems/issues: Boring, fun factor is suppressed. Engine runs very quiet. No one can tell how awesome I am, nor how much of a try-hard. Photos of engine bay are pointless. Lacking in cool toys, cool factor is present, but lower than desired.

Driving style: We was just funnin', officer, we didn't mean no harm. Top speed around 116 southbound down the back side of the sunol grade, had some 'encouragement' from another driver.
 
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LilToTo17

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Vehicle: 2017 Civic Si

Total tuned time: 27 months

Total tuned mileage: 11,500 miles

Tuning device(s) used: Ktuner V2

Tunes used: Si Ktuner Basemaps, TSP Stage 1, Derek Robinson Etune

Additional engine mods: 27Won W1 Turbocharger (E-tuned by Derek Robinson on 91 Pump), Eman's Modified CMC, Ktuner V2, RV6 Catless dp and fp, Custom SS 3" exhaust with two vibrant ultra quiet resonators, PRL Race Si Cai, Agency Power Intercooler with CNT Racing Intercooler Piping, Perrin FK8 RMM, PRL SS Clutch Line, FX350 Clutch with stock dmf, Hybrid Racing Gold Full Short Shifter, and Carbon Fiber Mugen Shift Knob.

Problems/issues: No big issues except for FX350 Slipping from long time ago lol. Have a modified exedy single mass flywheel and Action Clutch working on making me a custom 6 puck.
 

jred721

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Vehicle: 2018 Honda Civic EX (2.0L)

Total tuned time: 16 months

Total tuned mileage: 5,000 miles (approximately)

Current mileage: 10,008 miles

Tune used: KTuner Basemap #1

Additional engine mods: K&N air filter

Problems/Issues: Absolutely none so far.

Fuel Used: 93 Octane since tune requires 91+ (Mostly Sunoco fuel)

Driving style:
Aggressive and more spirited driving when i'm in the mood for it or the road is open. Otherwise mostly normal driving.
 
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MGZ

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Vehicle: 2017 Honda Civic Si Coupe

Total Tuned Time: 18 months

Total Tuned Mileage: ~40k miles

Tuning Device: Flashpro, ktuner v2

Tunes used: Hondata OTS +6/+9, TSP stage 1, custom IMW tune w/ DRob

Fuel used: California 91

Additional Mods: PRL intercooler, PRL Cobra Intake, 27won turbo

Problems/Issues: Gas isn’t good enough where I live to really take advantage of map 3 (for tsp stage 1). Recently had a few misfire codes which might be attributed to some bad gas sneaking in. Spark plugs were changed at 48k miles and haven’t had any further issues. Also, I should really make it a priority to replace my stock tires...

Driving style: Most days, highway driving between 75~85mph switching between 4th, 5th, and 6th as needed. My commute home is a little over an hour and mostly uphill, so I typically will be in 5th around 3.5-4K rpm pretty consistently throughout the drive. Occasionally I can drive on the more aggressive side (like, 85+ in 4th), but most of my hard driving is generally pulls onto freeway on-ramps.

Update (11/15/19): started an e-tune with drob a few weeks ago and I’ve had to do some much more aggressive pulls for data logs than I’m used to. Probably the most hard driving my car has seen which means I think I’ve been pretty kind to it this far. Otherwise, each revision fees better than the last. Can’t wait to finish up the process!

Update (1/11/20): Custom tune from IMW has been great, lots of power everywhere under the curve. Unfortunately, I think I’ve softened up my clutch so I’m (hopefully) getting the retrofit kit installed next week along with the 27won turbo. I’ll probably back it down and take it easy for a while so everything can break in nicely, but will update again once I’m retuned.

Tuning experience: Like many others, this has been my first manual car and first tuning experience. Its been a lot of fun but definitely with some splotches of fear and paranoia. Even still, I 100% believe tuning this car is worth it. Custom tune provides plenty of shove, though I’m curious what I will find when I reach the other side (turbo + clutch). Think I’ll most likely call the quits on mods after that, with the exception of maybe an exhaust for some sound.
 
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gtman

gtman

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Added the Driving Style category. Thanks to TypeSiR.
 

kytos

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Vehicle: 2017 Civic Sport (EUDM) L15BA MT

ECU: 5AN-G23

Gas: 98 RON E5 (Repsol or Shell only)

LTFT: -3 / -7

Total tuned time: 18 months

Total tuned mileage: 40.000 Km

Tuning device(s) used: Ktuner V1.2

Tunes used: All ktuner basemaps KTuner 21 (never agressive settings), current tune TSP Stage 1 (non-si)

Additional engine mods: Mishimoto Intercooler, K&N replacement filter.

Problems/issues: None

Driving style: Speedy with aggressive bursts from time to time, never push more than 2 PSI until engine is warm and never wot until ECT is 80ºC for a few minutes.
 
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David228cx

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Vehicle: 2018 Hatchback Sport MT, European 1.5 non si

Total tuned time: over 2 years

Total tuned mileage: 75000 km

Tuning device(s) used: Ktuner

Tunes used: Ktuner Stage 2, Ktuner Starter 21 with mild settings, TSP Stage 1 (non-si)

Additional engine mods: K&N Air filter, custom 2,5'' exhaust, PRL Intercooler, 27won Intake.

Problems/issues: None

Driving style: Long highway commutes with speedy aggressive bursts from time to time. Speedy mountain passes from time to time. Proper warmup and cooldown times when starting and stopping the car. Track day every X months.
 
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Andre80

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I would add an ecu number and if they have received warranty extension letters, for oil dilution and injectors

also its own ltft

and gasoline TYPE
 
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Andre80

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Veicolo : 2017 Hatchback Sport MT, European 1.5 non si

Tempo totale sintonizzato: 12 mesi

Chilometraggio totale sintonizzato: 10.000 km

Dispositivi di sintonizzazione utilizzati: Ktuner

Melodie utilizzate : Ktuner Stage 2, Ktuner Starter 2
1 con impostazioni rigide, TSP Stage 1 (non si)

Mods motore aggiuntivi: NO


Problemi / problemi: a CEL light

Cold Start Sound


Stile di guida: aggressivo

Gas: 100 RON EURO
 
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PowerPerLiter

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2020 Si Coupe 91 Talon TSI AWD 6262 280's N20 and 87 Buick Regal T 6776bb built N20
Vehicle: 2018 Civic Si Coupe

Total tuned time: 19 months

Total tuned mileage: 24,000+ miles

Tuning device(s) used: Hondata

Tunes used: Hondata +6, +9, my own custom mapping

Additional engine mods: Mishimoto SRI

Clutch: Stock and never slipped

Problems/issues: none until very recently. Emissions issue coding for cylinder imbalances. Also gauge cluster going black and coming back on "piece by piece". Returning car to stock except the intake has made huge difference with gauge cluster (went from off and on 4 times a drive cycle of 30 minutes- to - has only happened twice in the past 2 weeks.... almost like it's recovering from something....).

It unfortunately hasn't helped the emissions code. Either my injectors are in early stages of failure, it needs plugs, cat is partially melted, 02 sensor damaged, or a combination of all the above. Haven't had it looked at yet.

Making the personal choice to never use a flash device on these cars again.

Hoping to get it fixed and trade for a '20 si coupe and planning to leave as stock as possible. Maybe an R.

Driving style: Slightly speedy with aggressive bursts from time to time.
 
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LilToTo17

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Vehicle: 2018 Civic Si Coupe

Total tuned time: 19 months

Total tuned mileage: 24,000+ miles

Tuning device(s) used: Hondata

Tunes used: Hondata +6, +9, my own custom "powerperliter" mapping

Additional engine mods: Mishimoto SRI

Problems/issues: none until very recently. Emissions issue coding for cylinder imbalances. Also gauge cluster going black and coming back on "piece by piece". Returning car to stock except the intake has made huge difference with gauge cluster (went from off and on 4 times a drive cycle of 30 minutes- to - has only happened twice in the past 2 weeks.... almost like it's recovering from something....).

It unfortunately hasn't helped the emissions code. Either my injectors are in early stages of failure, it needs plugs, cat is partially melted, 02 sensor damaged, or a combination of all the above. Haven't had it looked at yet.

Making the personal choice to never use a flash device on these cars again.

Hoping to get it fixed and trade for a '20 si coupe and planning to leave as stock as possible. Maybe an R.

Driving style: Slightly speedy with aggressive bursts from time to time.
Curious to see what exactly you changed on your tune. Maybe there’s an issue with it.
 
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