exhaust piping question

HardCore97 · Post by **HardCore97** » Mon Jan 14, 2008 11:20 pm

ive been looking forever trying to find some 2.5 inch mandrel bent exhaust pipnng that doesnt cost something rediculous. anyone know of any placesonline or any place locally? magnaflow sells them but they cost too much for me. thanks

Silver Knight · Post by **Silver Knight** » Tue Jan 15, 2008 12:05 am

when i got my piping (2.5) done at car-x they charged me around $170 and that inlcuded the cost of the piping and labor.

HardCore97 · Post by **HardCore97** » Tue Jan 15, 2008 11:11 pm

yeah but was it mandrel bends or just the regular crush bends?

Spork · Post by **Spork** » Tue Jan 15, 2008 11:18 pm

Car-x uses press bends. but it would be fine for a d-series, or close to stock b-series

HardCore97 · Post by **HardCore97** » Tue Jan 15, 2008 11:30 pm

well mine(b18b) is sort of stock now but its going to be turbod soon as i get the money. that why i want 2.5 inch

ObsesionWitSped · Post by **ObsesionWitSped** » Wed Jan 16, 2008 1:47 am

Correct me if I'm wrong, but won't you see more gain with a 3 in. exhaust on a turbo app?

chunney · Post by **chunney** » Wed Jan 16, 2008 3:38 am

You'll just lose a bit of backpressure...
I know for sure it will SOUND worse than a 2.5"

T-Rock · Post by **T-Rock** » Wed Jan 16, 2008 6:18 am

HardCore97;90579 wrote:ive been looking forever trying to find some 2.5 inch mandrel bent exhaust pipnng that doesnt cost something rediculous. anyone know of any placesonline or any place locally? magnaflow sells them but they cost too much for me. thanks

HTP its like 25.00 a bend or something like that.

HardCore97 · Post by **HardCore97** » Wed Jan 16, 2008 10:06 pm

ObsesionWitSped;90866 wrote:Correct me if I'm wrong, but won't you see more gain with a 3 in. exhaust on a turbo app?

yes but 3 inch on a non turbo car wouldnt be very good. and since i dont know when im gonna get enough money i figured i would just go with 2.5. thats the minimum for a turbo car from what ive read/heard

big pipe · Post by **big pipe** » Wed Jan 16, 2008 10:11 pm

i went from a 2.25 to a 3" turbo back on the wrx. i would say that the biggest differance was spool up time. i was getting full boost about 400-600 rpm sooner with the bigger piping. also added a few horse. most turbo cars stock are under 2.5".
also back in the 90's, me and my buddies were running 3" on our cars (4age corolla, ka 240). backpressure is bullshit. even on a nonturbo car.
my ae92 with a 1.6 liter dropped from a 15.3 to a 15.1 changing from a 60mm pipe to a 75mm pipe
oh and a catless 3" on a turbo car sounds better than ANYTHING in the world(besides 4")