1.5L Turbo Civics – Let's Talk Intakes

  1. PRL Motorsports

    PRL Motorsports Premium Performance Products
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    Many of you have probably heard something about our Cobra Cold Air Intake System at one point in time, whether it be factual or something regurgitated inaccurately. We know what you’re thinking – “Not another intake post.” As much as we hate to beat a dead horse, it’s been a while since we’ve touched upon intake systems in the 10th Gen Civic 1.5L Turbo community. The Internet can be a great place filled with an abundance of information. Unfortunately, it’s more often a place where misinformation, skewed results and loud opinions overpower factual data.

    Race%20MAF%20Front%20Full_zpsgtxy1bvr.png

    Why does the Cobra CAI look so weird?

    Our “Cobra” design is shaped and routed to induct the largest volume of cold air on the market with the smoothest, direct airflow possible. The lower portion of the Cobra CAI maintains a 4.00” cross sectional area from the air filter into the Mass Airflow Housing. Stepped 4-ply silicone hoses allow all components to be installed and butted against each other without seams for optimal airflow.

    Inlet%20Seat%20on%204%20inch%20Lower%20SIlicone_zpsfm0nfuci.jpg
    MAF%20Housing%20Seated%20properly%20Installed_zps6xbgtkjj.jpg
    4%20Inch%20Diameter%20Rotomold%20Arrows_zpsymruoegl.jpg
    Inside%204inch%20Rotomold%20Showing%20Smoothness%20With%20Arrow_zpsozmhymne.jpg

    What about the fuel trims?

    3D scanning and CAD modeling allowed us to design a properly profiled billet aluminum MAF housing to keep Long Term Fuel Trims within -4% of factory specifications. Because of this, our Street MAF housing provides factory-like drivability and optimal performance without any tune or ECU calibration whatsoever. Customers can expect a 15 horsepower and 12 ft/lb torque gains in comparison to stock WITHOUT TUNE by simply bolting on this intake system.

    Street%20MAF%20Velocity%20Stack%20End%20With%20Arrows_zpszsagmc0n.jpg
    Race%20MAF%20Velocity%20Stack%20End%20With%20Arrows_zpsjzvshega.jpg

    What is the difference between the Race MAF housing and the Street MAF housing?

    We took the same concept as our Street MAF housing, but increased the housing diameter to allow a 50% larger volume of air for customers looking for even more gains than the Street MAF housing. However, due to the increase in diameter, Race MAF housings require a tune/ECU calibration. Fortunately, both Hondata and KTuner offer basemap ECU calibrations default in their software. Customers can expect a 20 horsepower and 15 ft/lb torque and even more midrange gains in comparison to stock WITH basemap ECU calibration.

    Street%20and%20Race%20MAF%20Housings_zpsadmemktk.jpg

    What’s the difference between a Cold Air Intake and a Short Ram Intake and the PRL Stage 1 Intake?

    The Cobra CAI System has been proven time and time again to offer the greatest and most consistent gains for the 1.5L Turbo 10th Gen Honda Civic. This intake system utilizes High-Density Polyethylene rotomolded tubing, 4-ply reinforced silicone hoses and an air filter placed near the fender-well to reduce heat-soak and draft true cold air.

    Unlike the FK8 Civic Type-R or Accord Turbo models, the 1.5L Turbo Civic chassis does not feature an efficient air duct system. For this reason, a Short Ram Intake System or Air Box is not ideal for the 1.5L Turbo Civic platform. A SRI may yield decent power gains on the dyno with the hood up, or for a brief period of time, but these power gains will quickly diminish once the intake system begins to heat-soak.

    10thGenSRI_zpsmnn9qaia.jpg

    For those who do not wish to purchase a CAI, the Stage 1 Intake System and Silicone Intake Hose Kit offer great gains for an affordable price. These systems replace the factory corrugated inlet hose with a smoother flowing 4-ply silicone hose. Due to the fact that the MAF sensor and housing is untouched, these systems do NOT require any ECU tune or calibration whatsoever and can be installed with ease. Customers can expect a 7+ horsepower and torque increase by simply installing the Stage 1 Intake System.

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    But what about hydrolock?

    Ah yes, the infamous hydroclock. I’m sure you’ve all heard stories about somebody’s brother’s sister’s uncle’s friend who hydrolocked their vehicle with a cold air intake. We’re not here to tell you that this isn’t possible, but we’re here to assure you that you’re more likely to damage your engine with a heat-soaking intake that provides poor fuel trims than you are to hydrolock your vehicle with a Cobra CAI System. Although this risk is always possible, a little bit of common sense goes a long way. These cars feature quite a bit of under-shielding and splash guards to protect from water damage, unlike older vehicles that were more prone to hydrolock issues. A vehicle would need to be submerged in roughly 14” of water while WOT (wide open throttle) for long enough time to fill up the Cobra’s massive internal volume, through the turbocharger inlet pipe, turbocharger compressor, into the intercooler and charge piping to hydrolock the engine. With thousands of Cobra CAI Systems sold and years of R&D behind us, we can confidently say that fear of hydrolock can be put at ease.

    http://prlarmy.com/Blog/10th-gen-civic-lets-talk-intakes/
     
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  2. Maroco

    Maroco Senior Member

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  3. Si2020

    Si2020 Member

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    First post but long time lurker. I just installed the Cobra intake and it is amazing! I purchased the race version and am using the TSP stage one tune. The sound is amazing when you get into boost! Couldn’t be happier. Definitely not worried about hydro lock.
     
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  4. PEPSIFLAME

    PEPSIFLAME Senior Member

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    It looks pretty sick. I know hydrolocking isn't the most common of issues, but I live in an area that floods and am moving to an area that sees consistent rain. I'll end up buying a CAI in April and am torn between y'all and 27WON. Y'alls sounds pretty damn good and theirs is a little more protective against hydrolocking. My internal argument is fun vs safeguarding.
     
  5. xjoshuax89

    xjoshuax89 Senior Member

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    Was in a similar situation and ended up with 27won. But now that I have hit the limits of my 27won intake I am considering going back to PRL if 27won takes too long with their release of a larger maf housing for their intake.
     
  6. xmikedentx

    xmikedentx Member

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    I think the one thing that everyone is leaving out is the quality of the filter. I ended up going with the PRL Cobra, because they were the only company to disclose what their filter actually filters. (5 Microns) I've had bad luck with dry filters (Injen) so the 27Won intake kit was a no-go for me, based just on that.
     
  7. PEPSIFLAME

    PEPSIFLAME Senior Member

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    How's the sound on the 27WON? I'm guessing with the lid on the case, it's muffled a bit. Is it an improvement over the stock box though?
     
  8. FK7 Civic Pilot

    FK7 Civic Pilot Senior Member

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    Any source for the Stage 1 advertised power gains available for the 1.5T? I've seen data for the Cobra and for the CTR Stage 1 systems, but haven't ever seen anything confirming testing done with the Stage 1 for a non-CTR. I've actually have the Stage 1 on my car, just curious on seeing a dyno graph for it showing that kind of gain. I thought it would be in the 2-3hp range myself.
     
  9. Neddih

    Neddih Senior Member

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    Yes it is much better than the stock box
     
  10. Gotch

    Gotch Senior Member

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    Colour me confused @PRL Motorsports ...

    You are saying that your Stage 1 intake is better than your SRI?
    “ For this reason, a Short Ram Intake System or Air Box is not ideal for the 1.5L Turbo Civic platform. ”
     
  11. silverblip

    silverblip Senior Member

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  12. OP
    OP
    PRL Motorsports

    PRL Motorsports Premium Performance Products
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    The Stage 1 Intake will be a bit less susceptible to heat-soak with the fact that the panel filter is encased with the air box, so it will provide more consistent power, especially after heat-soaked.
     
  13. Gotch

    Gotch Senior Member

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    Thanks for the honest answer!
     
  14. ThorSellsCars

    ThorSellsCars Senior Member

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    aFe Stage1/2 are also very good in my honest opinion
     
  15. SonicDave

    SonicDave Member

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    patiently waiting for CARB approval and I will get one
     
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