downpipe
 

well i plan on gettin a new turbo manifold for my turbo do you think its worth upgrading my downpipe from a 2 1/2 inch to 3 inch or should i just cut and weld my 2 1/2 to fit the new postion of the turbo. Some people say yes some say no i cant decide. My idea was to custom the 2 1/2 and weld in a electric cut out before my cat >:D

Re: downpipe
 

the cut out sounds like a pretty good idea, but if not using the cutout i would grab the 3 inch ;)

Re: downpipe
 

ive had bad luck with electric cut outs..

if you do get one, dont get one of these

http://www.mccordcg.com/mpp/mpp.htm

Re: downpipe
 

I'd stick with 2.5 unless you went with a different turbo as well and are lookin for some big power.

Re: downpipe
 

Yeah what are your power goals?

I would say definetely upgrade to a 3" if your running open downpipe and want more than 225whp

Keep the 2.5" if you have a 2.5" exhaust, want under or around 225 whp, are lazy

If youre gonna be under there and with everything cut and apart anyways, wont be much more work to upgrade, I would if you had the cash

Re: downpipe
 

hey thanks guy yea i have a 2 1/2 inch full exhaust on a drag turbo kit btu i plan on upgrading the exhaust manifold but i was hoping for 225 to the wheels on a stock engine but i think i gunna build my bottom end this winter and then shot for about 350 maybe 400 depending on my turbo right nwo im happy with it but if what i got doesnt reach my goal im gunna switch to a gt35 or something around those lines drag said the turbo would go to about 400 hp but im still nto sure of it

Re: downpipe
 

you want 400 on a stock motor? good luck.

Re: downpipe
 

he mentioned building his bottom end

Re: downpipe
 

o. I guess reading owns me on this one. you'll need a better manifold for 400 hp though. I'm assuming you are using the cast rav hard log.

Re: downpipe
 

2.5 inch exhaust isn't restrictive on 225hp, now if your shooting for 400 you will need 3inch ;)