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Hi i'm also from Malaysia. Are you using stock intake? Are you seeing high negative fuel trim with the stock intake? At idle STFT will hover around -12% to -17%

Wait. You said you had -8 ltft and -15 stft with the stock intake? That's a total of -23% fuel trim right there. I don't plan to run my car with tune anymore. I'm quite paranoid with the reliability of this motor and seen more and more post regarding blown engine. So i decided to return...

Are you using stock intake? My also stock intake and just recently i flash the "return to stock" and unlock hondata from vehicle. WIth the car now stock, i continue monitor hondata basic parameter just to find out that my STFT have high negative value at idle. -12% to -17% at idle, -3% to -6%...

Guys help me take a look at my datalog regarding fuel trim. I had hondata and recently just flash "return to stock" and swap my K&N oped pod intake back to stock intake. And i did a datalog just to see how a stock intake and stock map perform. To my surprise, car run very rich. STFT at idle...

Here's the datalog. With stock intake and return to stock flash, my stft have being high negative -12% up to -17% when idle. NEVER show positive at all.

My STFT at idle also around that -14%. While acceleration will drop to around -5%. Maybe my LTFT is not being used because it always show -100%.

This explain maybe stock car from factory run that rich. My LTFT is always showing -100%, no matter what device i use, be it diagnostics tools or hondata flashpro it is the same. Only showing STFT. I will ignore the fuel trim for now.

LTFT -7% and STFT -7% That would mean that your total fuel trim is at -14% ?

Okay i have come accross that everytime we touch the intake we need to reset ECU to relearn fuel trim So today i unplugged the battery for 1hour, remove whole intake assemply, re-install intake assembly and tighten everything, tighten charge pipe to intercooler, tighten charge pipe connecting to...

Okay i just unplugged battery for 1hour, remove whole intake assemply, re-install intake assembly and tighten everything, tighten charge pipe connecting to throttle body, clean MAF sensor, plug back battery and let it idle for 15minutes. STFT still the same negative and AFR would go til ~9 at...

I I don't plan to tune my car anymore. Plan to keep in stock for more years to come. How do i reset the MAF scale other than tuning?

Did you datalog with the EUDM bone stock car? Is the bone stock car running that rich? AFR 9~ while AFR.CMD is 10.89

Are the stock intake and stock map will run that rich? I mean like a completely stock car, will it run that rich? Anyone datalog with a completely stock car? And i'm not quite sure whether the Hondata "return to stock" is really going back to factory tune or what. With hondata custom tune the...

The LTFT always stay at -100%. I think i read in hondata forum that for the base CVT LTFT is not being used. How about my STFT? Is this normal for a stock tune and stock intake?

LTFT is always at -100%. I guess LTFT is not being used?

I have a 2016 base 1.5T CVT. I just reflash "Return To Stock" on hondata as i'm selling away the flashpro. Before the RTS i was using K&N typhoon intake kit with 22psi max boost tune. When idle STFT would hover around 0% to -8%. When part throttle acceleration, the STFT will become positive...

Vehicle: 2016 base Civic 1.5 CVT Total tuned time: 26 months Total tuned mileage: 40000+ km Tuning device(s) used: Hondata flashpro Tunes used: Hondata custom tune. Peak boost 22psi. 207whp 300nm Additional engine mods: K&N typhoon SRI, custom oversize intercooler, decat 3" to 2.5"...

Yeah it kinda happen randomly among the 4 cylinder. The knock count doesn't fix on a cylinder. Sometime cylinder 3 is the highest and sometime cylinder 2. And i also realise when i lift off it also record knock count which drive me crazy.

What damage will it cause if continue to have "misfire knock count" ?

Here's the link. I've uploaded multiple datalogs. All are almost the same pattern of driving with kcount. https://www.hondata.com/forum/viewtopic.php?f=50&t=22589