exhuast work????3inch..

[xrotaryxtsi]

i want to run three inch from the turbo back to my apexi muffler. i herd you lose back pressure??? any help??

 

[xveganxcowboyx]

Well, losing back pressure would be the point, wouldn't it....

 

[95blackGsTurbo]

On a turbocharged car you want to lose as much backpressure as possible and still be able to maintain a safe boost level. Most people when they get a 3" exhaust with a stock car experience boost creeping or spiking. Creeping is when you boost continues to climb to unsafe levels during acceleration. Spiking is when it just blows past a set point then either settles back down or stays up there. On a completely stock car as yours I would recommend going with a 2.5" downpipe for now and 3" catback or a whole 2.5" system. A mandrel bent 2.5" turboback exhaust will make a noticable difference from your stock exhaust. Will also help with any boost creeping or spiking problems.

 

[fourreGsixty3]

Yeah I would have to agree with the guy above myself. Go with a 2.5" turbo-back set up for now and when you start getting your car up into higher HP and further from stock then go with a 3". Check out Megan Racing's 3" set up they just came out with its cheaper then the name brand exhausts like HKS, and A'PEXI, and its better IMO.
G'Luck

 

[xrotaryxtsi]

thanks for the info. i think i might go 2.5inch straight back

 

[NewcGadget]

im not sure of your cars application but ill throw in my 2 cents ... Im running the apexi n1 exhaust and i love it , its 2.5 to from the o2 housing to the flex section then 3 inch all the way back . That might be ### you would be looking for , i honestly live the setup . Good luck with your car bro.

 

[dsmgrimreaper]

3" means go faster, faster means funner....

 

[SBstar]

Honestly I wouldn't waste time and money on a 2.5" if your planning future mods for more power. If you just want a little more fun then 2.5" will be fine.

 

[u12run]

why upgrade twice that seems like a waste of money to me. Just get a 3 inch right from the start and forget about it.

 

[95blackGsTurbo]

3" means go faster, faster means funner....

Or it means boost creep or spike which means way to lean which means damage to an engine.

 

[SBstar]

Or it means boost creep or spike which means way to lean which means damage to an engine.

Exactly which is why I suggested 3 inch only if he was going to further upgrade. Or you could conquer the boost creep through porting.

 

[99gst_racer]

I agree. ^^^

xrotaryxtsi - Keep in mnd, that on a turbo car like ours, the turbocharger itself creates enough backpressure for the engine. You can safely run a 3" turbo-back without a cat. unlike N/A cars. If you end up getting that external wastegate set-up, go for a 3" turbo-back.