How many people run TBE with the factory cat still on?
May 20, 2009, 09:53 PM
#3
lol yes I know what a TBE is. I am asking if people run a cat-back with a downpipe, but have kept their stock cat and how much power would be affected. In other words.. how much power could I be gaining by getting the high flow cat or cat delete pipe.
May 21, 2009, 05:27 AM
#6
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I'm pretty sure that 3.5in diameter piping is overkill. 3in piping is more than enough to support any amount of horsepower that is offered thus far. I am interested to know the gains from removing the stock cat when a CBE is already installed. Im not a fan of black powder all over the back of my car.
May 21, 2009, 07:53 AM
#7
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3.5" isn't pointless at all. The only person I know of is ETS. They have V1 exhaust with a 3.5" center section, but it necks down. I believe gains of full 3.5" over 3" will be more apparent in the gt40r hp range.
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May 21, 2009, 08:15 AM
#9
Get a test pipe, it's cheaper! 
You will probably get more gains from a test pipe, than the o2/downpipe, since the gains from the o2/downpipe may be negated by leaving the stock cat on.
Your best bet for the most power without buying a full TBE is probably getting the o2/housing and a test pipe and keeping your stock catback.
You will probably get more gains from a test pipe, than the o2/downpipe, since the gains from the o2/downpipe may be negated by leaving the stock cat on.
Your best bet for the most power without buying a full TBE is probably getting the o2/housing and a test pipe and keeping your stock catback.
May 21, 2009, 08:58 AM
#11
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You would definitely be minimizing gains buy running through a stock cat. The stock cat is smaller (I think its actually 2.25" on a 9! might be wrong but its surely smaller) and it has more cells then necessary to clear emissions. Your best bet would be to buy a 3" certified cat (gruppe-s I believe has a new one but it might be for the evo 8/9 only) if you want to stay legal or a cheap test pipe for all out performance and noise. I have been pulled over for multiple things, but never my test pipe on my loud Buschur exhaust, *knock on wood*.
May 21, 2009, 03:57 PM
#12
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just get rid of the cat i just got rid of mine and it sounds awesome i posted a video on one of my last threads check it out
http://www.youtube.com/watch?v=U4_qUNL2DAo
http://www.youtube.com/watch?v=U4_qUNL2DAo
