Hey guys. Ik gettin a downpipe for the gtp and I was wonderin what I should get. Should I get the dp with highflow cat or dp with offroad pipe? What's the differences like sound performance?
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04-19-2009
Hey guys. Ik gettin a downpipe for the gtp and I was wonderin what I should get. Should I get the dp with highflow cat or dp with offroad pipe? What's the differences like sound performance?
04-19-2009
Get the ZZP 3 inch off-road catless DP. You will get a gain in performance, nothing crazy, but it is noticable. Not to mention its a necessity for any further modding you may do. As far as sound, its a little bit raspier inside the car, not loud though. I love it.
04-19-2009
there is no reason to run catless unless youre just too cheap to buy the high flow cat.
04-19-2009
They mention something on their website about havin issues with the o2 sensor cuz of the cat delete. Does it through codes or effect perf. At all? What can I do to fix the o2 sensor problem?
04-19-2009
it wont affect performance, but it will throw a code unless you disable the rear o2 code with a tune or you get an o2 simulator.
04-19-2009
If you get a downpipe without the cat, you will have to get the rear O2 simulator, which is damn near as much as just getting the cat in the first place. When I got my RT downpipe with cat about 4 or 5 years ago, the O2 sensor was banging against the body of the car and was very annoying. I went ahead and got the O2 simulator to do away with it. I am guessing the ZZP pipe has the correct placement so the rear O2 will not do that. The RT downpipes are way to expensive for what you get now.
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