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2J Racing Down-Pipe Install Short DIY

airjor13

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#1
Hey guys, so the weather is nice and I finally got around to installing my 2J Racing DP. The DP is really well made and I highly recommended it!

I'm going to make this super short and break it down into 12 steps, if you have any specific questions, feel free to ask me! Attached are some reference pictures of the work area.

This was all completed on jack-stands/ramps, from start to finish with breaks it took me 4 hours all by myself with basic tools [tongue]

The one tool that is absolutely needed to get the O2 sensor off is the 22mm open end 3/8 socket, I used the Kobalt one from Lowe's, it was $7. If you have a complete basic set of mechanics wretches / sockets, you should be good to go, but a nice breaker bar is a must.

Good idea is to hit the O2 sensors over-night with some penetrating fluid.

This DIY is just for instructional purpose only! Please follow at your own risk! If you don't feel confident enough, please do take to shop!

1. Jack the car up, or like I did roll it up ramps, make sure the parking brakes are engaged!

2. Remove engine cover, air-box, intake tube down to the cold-side, battery, battery tray, battery neg ground, ECU attached to the battery (mostly 7mm / 8mm / 10mm bolts)

3. From under the car, de-tach CBE from the stock DP (15mm), get the CBE off the hangers, remove the stock DP mounts from the underside.

4. "Break" the rear O2 sensor loose from the underside, then remove from stock DP, get to the top-side and "break" the front O2 sensor loose, then remove.

5. Remove all the heat shield, the one cover half of the stock DP, and the one cover the manifold, lots of 8mm bolts, this part took me the longest, just trying to figure out how to extract all the heat-shield

6. "Break" the 3 bolts (10mm) holding the DP to the hot-side of the turbo, top 2 are accessible from the top, the 3rd one is easier from the bottom. Once the DP is free, remove the small plate by the shifter cables, 3 bolts, when you see it you will know what I am talking about.

7. Pull the DP gently up towards the driver side / battery tray area, get it around the coolant hoses / wire, be careful not to snag on anything, it will clear, just take your time.

8. Pull round gasket from stock DP, place in the same place on the 2J DP, drop the 2J DP in place as where the stock DP went, start putting the bolts in (put anti-seize on them)

9. Connect the CBE to the 2J DP, make sure the supplied exhaust gasket and bolts are used, make sure all connections are snug tight.

10. Reconnect rear and front O2 sensors, (I put a little bit of anti-seize on the thread), make sure all connections are snug tight.

11. Re-install engine cover, air-box, intake tube down to the cold-side, battery, battery tray, battery neg ground, ECU attached to the battery

12. Fire car up, enjoy the extra power, let me know if you have any questions!









 


MKVIIST

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#2
Excellent tutorial Jon. Did you get a chance to drive yet? Any noticeable difference on the butt dyno?
 


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airjor13

airjor13

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Thread Starter #3
Excellent tutorial Jon. Did you get a chance to drive yet? Any noticeable difference on the butt dyno?
Yes sir, did about 10 miles so far today after the install, man I can feel the power, the car is so much more willing! The stock DP is really pathetic, the tiny turbo now spools quick and the power comes on hard! The idle is still very mellow, but above 3-4k RPM in 3rd gear, it's like a whole another animal! Butt dyno summary , prob like 100WHP lol :)
 


rodmoe

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Well done I have seen that write up somewhere before :) only thing I did different was I did not bother with the lower O2 probe untill it (the DP) was out of the car for fear of rounding it off in the car. Just have the wire to deal with then when pulling the DP out.. GOOD Job and Glad you got it done with such ease :) now let me know if you pick up any P0420 codes. I have been getting one every now and then but not a big deal I will turn it off when I get around to it in the AP as it is just a Cat not up to whatever eff. they want.. lol
 


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airjor13

airjor13

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Thread Starter #8
Well done I have seen that write up somewhere before :) only thing I did different was I did not bother with the lower O2 probe untill it (the DP) was out of the car for fear of rounding it off in the car. Just have the wire to deal with then when pulling the DP out.. GOOD Job and Glad you got it done with such ease :) now let me know if you pick up any P0420 codes. I have been getting one every now and then but not a big deal I will turn it off when I get around to it in the AP as it is just a Cat not up to whatever eff. they want.. lol
Lol thanks Rod for the guidance! No code yet but it's probably going to come up soon!

There was considerably less cursing then I expected :)
 


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airjor13

airjor13

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Thread Starter #9
Where you able to reinstall all the heat shields?
I did not, but like Colin said, really no need, lots of space behind the motor should mean good cooling there. Joe of 2J Racing ran the DP as is with some heavy track time with no issues.
 


Sekred

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#10
Good "how to", makes me want to install my stock dump pipe and start again using this method. (sorry rod, don't get jealous, lol).
 


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airjor13

airjor13

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Thread Starter #11
Good "how to", makes me want to install my stock dump pipe and start again using this method. (sorry rod, don't get jealous, lol).
Lol thanks, I have to give Rod credit, I pretty much followed his way expect for leaving the shifter brackets alone :)
 


rodmoe

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#12
Sweet good to know you don;t need to mess with them :) Well done Sir and No way I would get jeally of anyone finding a better way it all about the help and btw Skered I still owe ya for sourcing them Diff bearing ;)
 


rodmoe

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Sweet good to know you don't need to mess with them :) Well done Sir and No way I would get jeally of anyone finding a better way it all about the help and btw Sekred I still owe ya for sourcing them Diff bearing ;)
 


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#17
I run the spacer on the race pipe and no codes yet. Great write up!! Do you mind if we add the link to the storefront?
 


Sekred

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#20
Sweet good to know you don't need to mess with them :) Well done Sir and No way I would get jeally of anyone finding a better way it all about the help and btw Sekred I still owe ya for sourcing them Diff bearing ;)
Of course I am joe-king and I'm hoping for a great write up when you fit your LSD.
 


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