I purchased a cartuning turbo kit with the upgraded PT61 Turbo and am wondering how much and if it would make a difference running a 3" exhaust as opposed to the 2.5". Are there any severe issues that I should be concerned about if I ran the smaller diameter exhaust?

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Fast.Loud.Shiny

the bigger the exhaust on teh turbo car = faster spooling

don't quote to much but taht is just from what i have heard

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for a turbo id go 3 inch

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

Am I able to install a 3" exhaust on the supplied Catalytic I was sent from cartuning? Is there a cross over piece available if need-be?

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Fast.Loud.Shiny

i think a decent exhaust shop could fab something very good up for cheaper the money

check your local one

mine did a full 3" cat back for 40 bux

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Okay thanks folks! You've been very helpful!

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Fast.Loud.Shiny

got any nice engine bay pics for us to droll over?

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Not yet! But be patient! The GP is all in pieces at my shop but I will post pics asap. Am installing Rockers, new springs, rods, and thinking about maybe headers or ported manifolds.

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Fast.Loud.Shiny

how about some progress pics

you know we do love to droll over those shinny new parts being installed too

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That shouldnt be a problem. How do you adjust the pics to the allowable upload size without having to trim them and cut out half of the picture lol? That has been my biggest dilema with uploading!

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Fast.Loud.Shiny

myspace photos and photobucket dont cut them up just resize but to do the full sized images you should use imageshack.us

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I don't use myspace or photobucket (first time Ive heard of that one lol, and imageshack??) I guess Ill have to check those sites out.

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Fast.Loud.Shiny

Photobucket is nice.

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One Big Ass Mistake America

Just run a open downpipe. That's what I run!! Sounds badass.

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1999 Z/28: full bolt ons, 3.73 gears, Yank SS 4k stall, Speed Inc S15 cam, ported 243's, ect.
2004 Comp G> K/N intake, Speed Daddy Headers, 3.6, cat back, Hids,
1999 GP GT:Intercooled zzp turbo set up, zzp tranny,ect SOLD:(

full 3"...with electric cutout?

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"Those 16's man!" "Yea, but i keep em' clean though...."

Ive got the ride and its install pics on FB and cardomain. Check out my link for cardomain folks!
http://www.cardomain.com/ride/2998910

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Fast.Loud.Shiny

480HP @ 12PSI, 435Lb/Ft Torque @ 5200RPM

531HP @ 15PSI, 490Lb/Ft Torque @ 5350RPM



where'd you get these numbers? dyno?
with or without methanol?
t61?
scan the dyno sheet please:)

Dyno w/meth injection T61 power made @crank

Will have dyno sheet up when I get to a scanner

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Fast.Loud.Shiny

oh thats not at the wheels?

Those numbers are wrong.
528HP@6690 12PSI
554HP@6735 15PSI
How do you post attachments?

No thats on crank. I dont know what my power to ground is. 450@12, 475@15?

Scan sheets from January 5th

And those numbers are without my exhaust cutout. Ive been quoted +50HP t(on ground) with open exhaust.

you are shifting at
6700 & 7135

what all mods do you have?

Thats top gear/direct drive. Nowhere to shift.
IC, PT61, 60#Injectors, SX Performance Fuel Pump 120GPH, SnowPerformance 100-250PSI water/methanol injection, .040 Cold plugs, Port and polish, PLog, Custom 3" exhaust, 1:9 Rockers, Fel-Pro Head Gaskets, 3000Stall, Shift kit, burning premium

and hours of Tuning

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Fast.Loud.Shiny

That hv3 is huge with turbo 2

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Should have just put in a cutout

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2009.5 SBM G8 GT
November 2011 Car of the Month