Cork Downpipe - Need your help!!!

speedi3

Member
:
07 MS3 GT - Silver
Just got mine today. Took it to the shop to get it installed. The bolts attaching the DP to the Turbo were Super hard to get off. They got stripped and ripped. Have to send it to the machine shop to get them off and have new ones.... :mad::mad::mad:

That said when we tried to change the O2 sensor from the original cat to the New one it was Super tight as well. Its late so I didn't get to call Cork about this question but: 1.) Are you supposed to remove the O2 plug from the original DP? 2.) If it doesn't come out what are the alternatives?

I'm planning to go to the dealership to order one but wanted to hear from others first.

This has been such a pain I am officially through modifying this thing!!!!!!!!! (flame)
 
it does need to come out, but try not to damage it !! mine got f***ed up too. it costs like $300 for a new O2 !!
 
That sux.

I am glad I decided to just do the CAI and drive this sucker cause that s*** dont sound like it was worth it after what you paid for all that.
 
Sorry to hear that, but mine came out just fine I used my impact O2 socket and my impact gun. Put my impact gun on the lowest setting and tightned the O2 then put my gun on the middle setting and loosened it and came right out. You can get O2 sockets off any Tool truck..(Snap-on, Matco, or MAC.....) And you are right about the bolts on the turbo housing that was a real PITA!!! I found it was easier to take off the turbo from the exhaust manifold than straight from the turbo. More work but well worth it...
 
Sorry to hear that, but mine came out just fine I used my impact O2 socket and my impact gun. Put my impact gun on the lowest setting and tightned the O2 then put my gun on the middle setting and loosened it and came right out. You can get O2 sockets off any Tool truck..(Snap-on, Matco, or MAC.....) And you are right about the bolts on the turbo housing that was a real PITA!!! I found it was easier to take off the turbo from the exhaust manifold than straight from the turbo. More work but well worth it...

DAMN... I wish some of you would have spoke up about your additional expenses on this. (bang)(bang) I would have left the exhaust alone than the F with this. Now my fn car is at the garage over night. I usually keep it in the garage. I won't be able to sleep at night thinking about spending an additional $300 for the sensor. Not to mention what ever the machine shop will charge to get the stripped bolts out.

They are taking the turbo out as well. If i'd i known that i'd have had a gt-3071r waiting for them :)

I just hope it will get done for less than 250. But i see 450 around the corner. (bang)(bang)
 
+1 on the test pipe, also taking the other cat and replacing with high flow cat....first ar gonaa keep smog legal.............................for now......DOH..........
 
Now that doesn`t sound too pleasing.It should be a fairly easy bolt on.

Getting the DP off is a task and 1/2. Its not an easy bolt on diagrams or not. Anyone ordering a TBE needs to know there are a few challenges when you remove the DP
 
+1 on the test pipe, also taking the other cat and replacing with high flow cat....first ar gonaa keep smog legal.............................for now......DOH..........

The other CAT is buried in the DP. If you get a test pipe it replaces the 2nd cat. You could replace the 2 resonators.
 
Well first off it doesn't take a genius to figure out you need to put some degreaser on the o2 sensors and let it sit for awhile before tightening and loosening. On the other hand of course the same process would go for the bolts on the downpipe. Taking out the downpipe is not that hard just takes a little twist coming out from the bottom of the car.
 
Last edited:
Well first off it doesn't take a genius to figure out you need to put some degreaser on the o2 sensors and let it sit for awhile before tightening and loosening. On the other had of course the same process would go for the bolts on the downpipe. Taking out the downpipe is not that hard just takes a little twist coming out from the bottom of the car.


Yeah, I was just going to say the same thing. When I got the DP replaced on my last car, the mechanic sprayed a bunch of WD-40 type stuff (not degreaser) and let it sit for a long time. Trying to take them off w/o doing this is idiotic.
 
Yeah, I was just going to say the same thing. When I got the DP replaced on my last car, the mechanic sprayed a bunch of WD-40 type stuff (not degreaser) and let it sit for a long time. Trying to take them off w/o doing this is idiotic.

Yeah I just couldn't remember what the hell it was called...
 
Just got mine today. Took it to the shop to get it installed. The bolts attaching the DP to the Turbo were Super hard to get off. They got stripped and ripped. Have to send it to the machine shop to get them off and have new ones.... :mad::mad::mad:

That said when we tried to change the O2 sensor from the original cat to the New one it was Super tight as well. Its late so I didn't get to call Cork about this question but: 1.) Are you supposed to remove the O2 plug from the original DP? 2.) If it doesn't come out what are the alternatives?

I'm planning to go to the dealership to order one but wanted to hear from others first.

This has been such a pain I am officially through modifying this thing!!!!!!!!! (flame)

Sorry to hear that the shop you took it to don't have experienced mechs...
 
I did my corksport downpipe last night with a vibrant exhaust it took 3.5 hours. The 14mm turbo bolts were tight and I cursed alot. The o2 sensor stripped also. The bolts are best broken loose with a 14mm 1/2" drive impact gun and several swivels and extensions. The o2 sensor isn't that tight but the rust and carbon ***** up the threads so you MUST soak it in wd40 or pb blaster(which is better). Then turn it out 1/2 turn, add more pb on the exposed threads, turn it back in and now repeate this a lot backing out a bit more each time. Like I said I rushed and doofed my threads but you can tap them with a m18x1.5 die before you replace the 300 dollar sensor. When tightening the dp the 14mm bolts suck again. You can only use a 14mm open end on the lower front bolt and they are a tight b**** even with a lot of anitseize and pb blaster. Make sure you have ratcheting box wrenches for the install they save a lot of time. If I had done it earlier I would have given the heads up on it being a tough but worth while install. Oh and I was on my back with the car body 18" in the air only so you don't need a lift.
 
I did my corksport downpipe last night with a vibrant exhaust it took 3.5 hours. The 14mm turbo bolts were tight and I cursed alot. The o2 sensor stripped also. The bolts are best broken loose with a 14mm 1/2" drive impact gun and several swivels and extensions. The o2 sensor isn't that tight but the rust and carbon ***** up the threads so you MUST soak it in wd40 or pb blaster(which is better). Then turn it out 1/2 turn, add more pb on the exposed threads, turn it back in and now repeate this a lot backing out a bit more each time. Like I said I rushed and doofed my threads but you can tap them with a m18x1.5 die before you replace the 300 dollar sensor. When tightening the dp the 14mm bolts suck again. You can only use a 14mm open end on the lower front bolt and they are a tight b**** even with a lot of anitseize and pb blaster. Make sure you have ratcheting box wrenches for the install they save a lot of time. If I had done it earlier I would have given the heads up on it being a tough but worth while install. Oh and I was on my back with the car body 18" in the air only so you don't need a lift.


Thanks for the update. This is valuable. I'm printing this and taking it to the shop this am.
 
or you can do it the easy way and do like Im doing and my buddy in his speed6 and just get a local chop shop to cut your exhaust at the turbo, run a 3" back with a high flo cat and a nice 3" inlet can on the back. btw, it sounds f-in sick. and your getting the most possible hp gain out of it. trust me....biiiiiiiiiig difference. and hows this, im getting it done for 230.... (muffler: megan carbon fiber titanium. ($150) high flo: pypes mini flo ($60)
so my total price for a 3" turbo back no restriction is approx. $450. (thats niiice!)
 
You still have to take off the O2 plug and reattach. You still have to get to the turbo and remove the DP. Sounds great for the money but the labor is the B*t*h. Saving money is great too... I wish you well on your install.
 
Can we install a headers for our cars or not or a less restrictless turbo manifols,any ideas?
 

Similar Threads and Articles

Back