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  1. #1
    Established Member Two Rings
    Join Date
    Jun 05 2019
    AZ Member #
    490084
    Location
    baton rouge louisiana

    My JHM test pipe install experience

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    I just wanted to share my experience and spark some conversation for anyone planning to do this work. I am kicking myself for not taking pictures along the way but most of the work i do to my car is in a time crunch due to kids/wife/this is my daily driver

    Anyway, since there is very little info on the interwebs about the removal of the stock cats other than ignitiontubes vlog's, i layed in bed the night before stressing while going through the process of the removal as im sure many of you have done before.

    I wake up the next morning, downed a redbull and got to work.

    30 minutes in, i have both downpipes removed and im rocking and rollin



    Next i go to tackle the removal of the trans mount 12mm triple squares to lower the trans mount.... cant find my 12mm so i go to lowes/orielly's/harbor freight/napa. 2 hours later i find one at autozone. Get back to the house, chug another redbull and get to it.

    30 minutes later i have the passenger side cat removed and intact (no cutting required)



    Next is the drivers side. As im underneath, twitchy as all get out bc of the amount of redbull flowing through my veins, i see that the drivers side is going to be a bit more tricky due to the intermediate steering shaft and some trans lines being in the way. But it still looks like im going to be able to remove the drivers CAT intact. A few minutes in and i have 2 of the 3 nuts removed from the header. At this point i'm a little worn out and had to phone a friend for some help in ratcheting. 1 hour later, we have the drivers side cat out.. INTACT



    After about 8 hrs of working on a creeper and all over town looking for triple squares, i finally get to inspect what 2,000 miles of dual pulley has done to my cats.





    not terrible, but i can tell they are on the way out. Had zero issues installing the new JHM cats and they sound great. Here is a soundclip of dynamic and comfort revs.

    https://www.youtube.com/watch?v=n1reW-7JtMQ

    Feel free to ask any questions about the removal and installation process. Dual pulley ratio, jhm 207mm crank pulley, stock downpipes and catback.

  2. #2
    Established Member Two Rings
    Join Date
    Dec 08 2018
    AZ Member #
    432803
    Location
    Northeast

    I'm suspecting my cat is bad as well.

  3. #3
    Established Member Two Rings
    Join Date
    Oct 15 2020
    AZ Member #
    570036
    My Garage
    Stage 3 (Rs6 hybrid) C5A6
    Location
    Spokane WA

    I was able to remove both my cats without cutting anything as well. It wasn’t a hard job, just more of a pain in the A due to lack of space in there.

    My only recommendation for anyone doing it is spray some pb blaster or wd40 on all the nuts/bolts the night before. I didn’t and rounded one off, that added an hr of unpleasantness and lots of cursing to the job.


    Sent from my iPhone using Tapatalk

  4. #4
    Established Member Two Rings
    Join Date
    Jun 05 2019
    AZ Member #
    490084
    Location
    baton rouge louisiana

    Agreed, i would not want to deal with any type of issue up there near the headers. At that point, might as well pull the motor haha

  5. #5
    Veteran Member Three Rings
    Join Date
    Sep 11 2015
    AZ Member #
    354906
    My Garage
    2003%20VW%20Jetta%201.8T
    Location
    Western Mass

    What are you running w the race pipes to prevent emissions related CEL now there is no cat? 02 spacer?

    Sent from my SM-G960U using Tapatalk
    2015 Mythos Black Pearl BO 6MT S4 P+ | 19" peelers | Nav | Carbon inlays | B&O | Sport Diff | Nappa
    Mods: 20% tint | EPL | OEM Audi Sport plate frame | HOEN fogs |ECS 10/12.5mm Spacers | Hardwired radar | ECS Trans insert | CTS intake | AWE Touring Exhaust - stock DPs | H&R OE Sports + Koni Shocks | Eurocode F&R Sway

  6. #6
    Established Member Two Rings
    Join Date
    Jun 05 2019
    AZ Member #
    490084
    Location
    baton rouge louisiana

    https://www.amazon.com/Sensor-Protec...635984&sr=8-15

    I'm running these O2 spacers i found off of amazon. They have a mini catalyst inside of them. You can also unscrew the end and take the catalyst out, i chose to leave them in.

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