Whos running a FULL 3" exhaust on a 3.4?

[KBeezy]

Is anyone here, thats still naturally aspirated, running a full 3" exhaust on their car? I'm just curious as to how well it runs. This month I am buying a set of pacesetter headers and my intake is on a truck right now headed my way so my engine can inhale better [img]graemlins/banana.gif[/img] but I just want to know if anyone is running full 3" yet and if so how well it performs.

[Jerriko]

I am running 2.5" dual and I think its great. I also think that I am a little low on the backpressure and that 3.0" maybe too much. What cam, head work do you have done?

[camaro_dakota]

i am.... it is good? in conjunction with the intake and headers it should be an ok gain....when my car was stock... the exhaust didnt seem to do much at all if anything when i first put it on.... but the more i mod my car the more exhaust seems to be important... 3in is fine but you dont so much need it with our motors 2.5 will do just fine....but 3 in will be deeper and I really dont think it hurts especially if you spray or get forced induction... I run NA and have 3in for the sound and I know air is flowing decent through the pipe so i put a quiet muffler on there and can ride around flowing alright and quiet then i open up my cutout and its good to go.... some say we dont flow enough to use 3in and no one should use it NA.... i say do what you want its really not a hardcore drag car... especially if you are running 18's in the back it sounds a little deeper and better so i say go for it... Sorry for the rambling.. Hope this helped,
Dakota

[White95]

I run a full 3" system, with headers and the cat removed, and I love it!!! I started out with a 2.5" system and noticed a difference and noticed more improvement with 3" system.

[KBeezy]

Well right now I have stock from the cat forward and from the cat back is 3" stainless steel Loudmouth pipes with a Dynomax Race Bullet inplace of stock SLP resonator and it sounds MEAN. Ima get a high flow cat and PaceSetters and was just wondering if I should keep 3" inbetween the two or do 2 1/2" from the headers to the cat or what.. Im thinking I might just do 2 1/2" to the cat...Or 2 3/4"...

[cero]

im runnin full 3in and love it also

[njp98]

I'm also running a full 3in setup and love it, i hear things about back pressure coming up - what are the benefits of it? I haven't read anything saying is was a good thing to have for performance. Everything I've read says to fully reduce all backpressure and that the "some back pressure is good" arguement is untrue. Is this a myth or is there some substance?

Edit: Oops, didn't see the 3.FOUR , sorry.

[CARdiac]

I have a 3" Catco, 3" custom pipes into a SS exhaust. It runs fine, I have a set of pacesetters waiting for install and hope to do a ported polished intake with heads.

I will tell you that I cannot get my Cat hot enough to pass inspection here in TX

[KBeezy]

Not a problem up here - no inspection. [img]smile.gif[/img]

[95Batmobile]

I have pacesetter headers and full 3", it runs about as good as it can [img]smile.gif[/img]

[viper98885]

I have Pacesetter headers and a full 3" exhaust. With a head/cam setup, it's about the only way to go.

[KBeezy]

..stock head, stock cam...for now [img]tongue.gif[/img]

[93camaro_zzz]

I have a 3" magnaflow system, and discovered that ther is not much difference between the 3" an dthe 2.5". But more mods are coming, so it will help out. [img]smile.gif[/img]

[MustangEater8251]

Do it...

as for backpressure myth it is true...

my 3.4 ran like *** with an open y-pipe, but ran strong with a clogging cat still hooked up and ran its best with a crappy $15 muffler on the y-pipe.