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1.5T PRL Motorsports Cobra CAI Install

Discussion in 'Engine / Exhaust / Transmission / Tuning' started by PRL Motorsports, Oct 25, 2017.




  1. PRL Motorsports

    PRL Motorsports Senior Member Elite Sponsor

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    For anyone wondering, here is our installation writeup for our 1.5T Cobra CAI. This intake system fits both Si and Non-Si 1.5L Turbo Civic applications.

    RaceMafIntakeAssembled_zpsf7gwhzuw.jpg

    Tools Needed:
    Ratchet
    10mm socket
    8mm socket
    Extension
    10mm wrench
    Flathead screwdriver
    Phillips-head screwdriver
    3mm hex-key / Allen wrench
    5mm hex-key / Allen wrench

    Torque Specs:
    M6 bolts = 120 inch/lbs

    We recommend raising the front end of the car at 18-24" off the ground for comfort.
    DSCN1376_zpssqgw5sx8.jpg

    Remove the two Phillips-head screws towards the front lower half of the wheel-well that attach the bumper to the inner fender liner.
    DSCN1377_zps5ohwdize.jpg

    Remove these two 10mm bolts that hold the undershieding on.
    DSCN1378_zpsms32feqp.jpg
    DSCN1387_zpsqbpwyyic.jpg

    Remove these two clips by popping the middle circular clip with a flathead screwdriver.
    DSCN1379_zpsfodyunrx.jpg

    Remove this plastic clip in the same fashion as the last two.
    DSCN1382_zpsgmopfyrz.jpg

    Pull the undershield/inner fender liner back towards front wheel to expose the area behind the bumper.
    DSCN1454_zpsoqo86lxq.jpg

    Remove the two Phillips-head scews that attach the MAF sensor to the MAF housing. Apply pressure to the screws with the screwdriver to avoid rounding out and stripping the heads of the screws.
    DSCN1389_zpsk6li1v2v.jpg

    Pop the wiring harness clip from the upper air box by pushing both sides in with a flathead screwdriver.
    DSCN1391_zpskxk9iy7z.jpg
    DSCN1390_zpsolppv3gx.jpg
    DSCN1393_zpsiqfkx3fi.jpg

    Once this is removed, set the MAF sensor and harness aside for later use.
    DSCN1395_zpshgwuk35a.jpg

    Loosen both clamps and remove the air hose.
    DSCN1396_zpshvqwax34.jpg

    Loosen the four bolts/scews and remove the upper air box cover.
    088479c8-75dc-4378-92ea-fe4e0aca7565_zpszqhliqkw.jpg

    Remove the air filter.
    DSCN1400_zpsiupmcmhi.jpg
    DSCN1401_zpsa2fj9jp8.jpg

    Loosen the two 10mm Bolts and push the lower air box piece towards the front of the car to separate it from the dampener's rubber nipple below.
    8e523e33-b9c6-4ace-b280-338fdbbe2a92_zpsqkrebkmp.jpg

    Remove the two 10mm bolts that attach the lower air box bracket to the chassis
    DSCN1409_zpsqdbsbuhf.jpg
    DSCN1412_zps2wuuyjsc.jpg

    You should now see the dampener below where the air box unit once was. We already had this removed for our FMIC piping, so we do not have this. The unit goes together like followed:
    DSCN1404_zpsovmteesm.jpg
    DSCN1406_zpsmwjaq5d2.jpg

    Remove the two 10mm bolts to remove the dampener. It is a rather tight fit, so it will take some fighting and angling, but this can be removed.
    DSCN1407_zpsxovzwjsy.jpg

    Remove the 10mm bolt that attaches the factory clutch line bracket to the chassis. You will notice that the bracket has a locating tab.
    DSCN1413_zpspcaapsz5.jpg

    Install the billet clutch line relocation bracket with the supplied M6x16 socket head cap screw using the locating tab. Attach the factory clutch line to the relocation bracket using a supplied M6x12 flange bolt using the locating tab.
    DSCN1420_zpssjmaavwj.jpg
    DSCN1424_zpsuqd2fo7h.jpg
    DSCN1428_zps8cu0zdzh.jpg
    DSCN1432_zpsgc9agkta.jpg

    Loosely attach the lower bracket to the bottom of the rotomolded intake piece with two M6x12 bolts. Do not put the filter on yet, as installation is much easier without this attached. We only have the filter on for location reference.
    DSCN1436_zpspqrofwfp.jpg
    DSCN1437_zpsuaejwq23.jpg
    DSCN1438_zpstfs1avwd.jpg

    Loosely attach the lower bracket to the chassis with two M6x16 bolts. One bolt will be threaded to the chassis. The other will be threaded through the untapped square hole into the nylock nut behind this.
    DSCN1464_zpsv5sljus5.jpg
    DSCN1465_zpslalnpuj9.jpg
    DSCN1466_zps3effduok.jpg

    Loosely attach the upper bracket to the rotomolded intake piece with an M6x12 bolt and loosely attach the bracket to the chassis with two M6x12 bolts.
    DSCN1443_zpssyroq7ph.jpg

    Loosely attach the 4" silicone hose to the rotomolded intake piece with both 4" clamps oriented in an accessable area.
    DSCN1461a_zpsvrb0hemd.jpg

    Loosely attach the upper intake hose to the billet MAF sensor housing with the radius of the hose angled up.
    DSCN1450_zpsav45nmhj.jpg
    DSCN1448_zps2hii3s6b.jpg

    Loosely attach the 4" side of the billet MAF sensor housing to the 4" silicone hose and finish attaching the connected assembly to the factory black plastic intake pipe.
    DSCN1459a_zpsra1vchww.jpg

    Locate the rotomolded intake piece with your hand while checking for fitment. Once fitment is as desired, the brackets can be tightened down starting with the lower bracket. Rotate any silicone hoses if needed and tighten all clamps. Be sure that silicone connections are butted against their designated receiving grooves for optimal airflow.
    DSCN1458a_zpsnkky4myp.jpg

    Attach the MAF sensor to the billet MAF sensor housing using the two supplied M4x8 socket head cap screws. Do not over tighten the M4 SHCS bolts, as these only need to be snug.

    Attach the air filter to the rotomolded intake piece.
    DSCN1463a_zpsnnkwy8sr.jpg

    Push the undershield/inner fender liner back in place and attach all plastic clips and 10mm screws that were removed.
    DSCN1454_zpsoqo86lxq.jpg

    Lower the car back onto the ground and check for any loose connections.
    DSCN1466_zps3effduok.jpg

    Street MAF housings do NOT require custom ECU tuning. Race MAF sensor housings require custom ECU tuning due to its 50% increase in size over factory.
     
  2. 360glitch

    360glitch Moderator Moderator

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    Great guide. I think a lot of us are looking forward to this product!
     
  3. ttorres1183

    ttorres1183 TTorres1183

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    Thanks for the write up can wait to hear how this intake sounds in person!!
     
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  4. ne0guri

    ne0guri Senior Member

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    You guys are the best! Now I can visualize the installation for he next few weeks until it actually arrives!
     
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  5. 360glitch

    360glitch Moderator Moderator

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    On that note, how does it sound @PRL Motorsports?
     
  6. OP
    PRL Motorsports

    PRL Motorsports Senior Member Elite Sponsor

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    Last edited: Oct 25, 2017
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  7. andyboyd102

    andyboyd102 Senior Member

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    As always, @PRL Motorsports is on top of the game!! Thanks for the write up....cant wait to get this and the FMIC
     
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  8. jgooooo

    jgooooo Member

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    Can’t wait to get mine, hopefully one of the first shipped :p.
     
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  9. jakabony

    jakabony Senior Member

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    Awesome write up guys. Can't wait to pick mine up.
     
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  10. iDerek2 Member

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    Awesome! I can't wait till mine arrives.
     
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  11. JDM_DOHC_SiR

    JDM_DOHC_SiR Senior Member

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    The Quality of this intake is on another level!!:bow:@PRL Motorsports :thumbsup: Glad I have mine on order :D
     
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  12. 17siturb0 Senior Member

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    If you want a intake that is actually going to produce power, this is the one. :yes::drive:
     
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  13. riv21

    riv21 Member

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    Awesome@PRL how long did it take to reassemble and assemble ?
     
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  14. 17siturb0 Senior Member

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    If you have all the tools required, you can get the job done in 45mins to an hour. If you know the 10 gen like the back of your hand, 25-30 mins.
     
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  15. riv21

    riv21 Member

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    Not bad im not to mechanically inclined so it will probally be all day for me lol
     
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