hustler

iTrader: (6)

If its already bottle necked there, will the 3" from the dp back help at all? I know bigger is better in this respect, but its not going to get any better with this dp...right?

I'm looking at the 3" enthuza w/cat.

Mach929

iTrader: (3)

i thought the bell dps were 2.75" but anyway it can't hurt, only reason not to go 3" would be for noise, but with a proper muffler and a resonator should be decently quiet

hustler

iTrader: (6)

64mm i.d.

y8s

iTrader: (8)

pipe size is measured by OD...

and go with the 3". less back pressure downstream is still good.

TurboTim

iTrader: (9)

If Enthuza's 3" fits without banging into anything and isn't too loud for you, they I agree with Y8S, 3" instead of 2.5" post turbo should give you a hp or two.

Braineack

iTrader: (62)

do it!

Al Hounos

3" is the hotness....2.5" is so 2003.

LunaticDriver

so a 2.5" ID is a what OD?

RusMan

about 2.75 I think.

But yeah 3" is the only way to go if you're turbo, not much louder than 2.5" and it's just so hot and gives you some more horses

hustler

iTrader: (6)

its done. Now I just have to pick up my $350 torsen swap, then decide if I need the 57mm rad or not...then there is nothing I need to buy.

reckless_abandon

iTrader: (1)

clearly

cueball1

iTrader: (13)

Has anyone dyno'd a car swapping a 3" for 2.5"? I just got my 2.5" and it looks huge for our tiny motors. Just wondering if the gain is proven or theory.

Not only do I drive a Miata, now I have to feel even less manly with my little 2.5" exhaust.

LunaticDriver

oh... so i guess i have 2.5" ID Turbo Back

Al Hounos

FM, BEGi, and their supporters have always said it doesn't make any difference, but BEGi's new DP is a 2.75".... it probably isn't necessary on little turbos like the Greddy turbo and the gt2554r, but any bigger, and I'd run a 3".