Catalytic converter right behind turbo?
#1
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<center><img src="https://secure7.nexternal.com/achtuning1/images/stage_iii_long1.jpg"></center><p>I've been doin some research on the TT, and found a APR turbo kit, which had the cat nearly connected to the turbo.
If so, doesn't that restrict flow? Would that cause the turbo to overheat with all the heat coming from the cat? Also, is there any high flow cats you can buy, and/or a turbo back exhaust that incorporates the cat in a farther back position?
If so, doesn't that restrict flow? Would that cause the turbo to overheat with all the heat coming from the cat? Also, is there any high flow cats you can buy, and/or a turbo back exhaust that incorporates the cat in a farther back position?
#5
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I have a custom 3" tb system: 3' single dp to a 3" HJS racing cat, to a custom made 3" exhaust and muffler.
Here's my cat (see the flanges? easily swapped out for my test pipe)
<img src="http://pictureposter.audiworld.com/24538/car_mods_019.jpg">
The test pipe:
<img src="http://pictureposter.audiworld.com/24538/car_mods_008.jpg">
I don't worry about a CEL with the test pipe or the cat, as my rear O2 sensor has been programmed out.
Here's the dp. It's a real tight fit, you can see wheren I pounded the heat shield (also need some triming). You'll also need stiffer engine mounts, as the oem allow the engine to rock too much. If you don't, everytime you mash on the throttle, the dp will hit the heat shield.
<img src="http://pictureposter.audiworld.com/24538/dscn1549.jpg">
My exhaust (this is a shot from ZGTT's car. The same guy custom made our exhausts - he also does Champion Racing's S4 exhaust)
<img src="http://pictureposter.audiworld.com/30768/installedwflange.jpg">
This is the only pic of my exhaust tips.(excuse the car carrier, this was taken right before my trip to the West side)
<img src="http://pictureposter.audiworld.com/24538/dscn2337.jpg">
Everything is mandrel bent and flanged.
If you have the 180, there's a bunch of tb you can go with, as they are the same for many VW applications.
Here's my cat (see the flanges? easily swapped out for my test pipe)
<img src="http://pictureposter.audiworld.com/24538/car_mods_019.jpg">
The test pipe:
<img src="http://pictureposter.audiworld.com/24538/car_mods_008.jpg">
I don't worry about a CEL with the test pipe or the cat, as my rear O2 sensor has been programmed out.
Here's the dp. It's a real tight fit, you can see wheren I pounded the heat shield (also need some triming). You'll also need stiffer engine mounts, as the oem allow the engine to rock too much. If you don't, everytime you mash on the throttle, the dp will hit the heat shield.
<img src="http://pictureposter.audiworld.com/24538/dscn1549.jpg">
My exhaust (this is a shot from ZGTT's car. The same guy custom made our exhausts - he also does Champion Racing's S4 exhaust)
<img src="http://pictureposter.audiworld.com/30768/installedwflange.jpg">
This is the only pic of my exhaust tips.(excuse the car carrier, this was taken right before my trip to the West side)
<img src="http://pictureposter.audiworld.com/24538/dscn2337.jpg">
Everything is mandrel bent and flanged.
If you have the 180, there's a bunch of tb you can go with, as they are the same for many VW applications.
#7
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I then welded the two together. That way I didn't have to pay for a new resonator.
I still have the UUC tips sitting in my garage. So, if someone wanted to make a UUCish system, all they'll need is the center pipe, resonator, and a y adapter. It doesn't really matter what size center pipe you want 2.5 - 3", cause it would be custom fabbed with the UUC tips welded on.
I priced out similar tips and they are like $100 a pc. But, of course, I'd sell them real cheap.
I still have the UUC tips sitting in my garage. So, if someone wanted to make a UUCish system, all they'll need is the center pipe, resonator, and a y adapter. It doesn't really matter what size center pipe you want 2.5 - 3", cause it would be custom fabbed with the UUC tips welded on.
I priced out similar tips and they are like $100 a pc. But, of course, I'd sell them real cheap.
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