hey i was looking into full catback exhaust systems and i was thinking that when i go to do my rb20 swap that i may just use a downpipe and no actuall catback exhaust what so ever


do u think i could see any hp gains out of this compared to a cat exhaust because this way i was thinking was there would be no to hardly any restriction, and i dont care if its loud and so on inspection tickets etc etc i just want the most power out of it



thanks
brent

 

are u ganna be driving it on the streets...? Cus you wouldnt want cops pulling u over for being so loud and no exahust and they pop the hood and see its a illegal engine....

 

i've heard good stuff about the blitz bur spec exhaust, thats what i'll be using when i do my rb25 swap.

 

Same here, im ganna get my blitz exahust in...a week or so. Im ganna do a RB20 swap..need a few more parts..

 

well it would be in tagged in DE and they dont have restrictions on exhaust so would i get more hp from just a down pipe and yes i will be driving it on the street

 

ive never seen a person just use a downpipe, no exahust at all. I would think that its better to have a exahust cus when u see races and evrything, they have a exahust

 

every race car you'll find has some sort of exhaust on it.

 

yea i guess thats true......i wonder if there is anywhere online that has just run a downpipe......hm.....ill keep a look out on it

 

from the sounds of it you really want to have minimal backpressure... my suggestion to you would be to run a DP then from the DP run strait pipes with NO muffler at the end. that'll be legal and also probably give you what you want for performance. it won't be quiet at all so i'm gonna warn you about it now.

 

so ur saying run a straight pipe all the way through to the rear bumper or just like stop the pipe half way down to the rear of the car and just have a pipe no canaster correct? when u look at the car from the rear would u be able to see an exhaust at all coming out of the back or no ?


lmk

 

what i'm saying is do the same thing as all the demestic guy and run piping from your downpipe to the back of the car where the muffler would be. just DON'T put a muffler on.

 

so from the back you would just be able to see the little *** pipe sticking out the back correct?

 

ya, you can put a tip on it though to make it look better, like a rectangle tip or something.

 

well the reason i was wondering about just the down pipe is because what is the purpose of getting those cut offs that u can buy they open the exhaust up right after the down pipe thats why i was wondering if i could just use a down pipe and i dunno if i wanna do straights because i think it would look ****ty as hell coming out of the back....well maybe not i dunno though

 

umm the downpipe is the part coming from the manifold to teh CAT, i've never heard of ANYONE cutting out the downpipe cuz thats just not neccecary. you must be talking about a "testpipe". that a piece that replaces your catalitic converter.