Guest Enzo Posted October 26, 2006 Posted October 26, 2006 ok next week im gettin an exhaust fab shop to knock me up a minted system for my glanza as my power geter is severly fucked,what i want to know is if i should go for 2.5 or 3 inches in diamiter for my car,any advice or coments welcome
Shaun Posted October 27, 2006 Posted October 27, 2006 with the 3 inch you might find it will knock on the rear cross member if you lower it a lot as mine does
Guest Enzo Posted October 27, 2006 Posted October 27, 2006 i dont htink htat will be an issue to be honest, im lookin at the more from a performance and responce standpoint,??
scutch0 Posted October 27, 2006 Posted October 27, 2006 i would also like to know this...my mrs is paying for a cat back system to be made for my xmas prezzy!also, any boxes on the system or straight thru? i was gonna go straight thru as i love the sound of the wepr exhausts.
ecksjay Posted October 27, 2006 Posted October 27, 2006 2.5 will be more than enough mate, 3 will only be needed (MAYBE) if you were pushing well beyond 300bhp, and even then it may be too big...
paul w Posted October 27, 2006 Posted October 27, 2006 i would also like to know this...my mrs is paying for a cat back system to be made for my xmas prezzy!also, any boxes on the system or straight thru? i was gonna go straight thru as i love the sound of the wepr exhausts.Make sure they do make it a proper cat back system,i had one made up for my old GT4 at a well known retailer,it was nothing more than a back box and about a foot of pipe!!! Until i got the managers arse out of the office to point out the cat is at the front of the car! The Bastards! Be sure to see it on the ramp before you drive it away.
Glanza_Ragger Posted October 27, 2006 Posted October 27, 2006 2.5 inch is plenty unless your going for a 5e lump.3" system with the 4e lump will mean mega loss of back pressure, things will start leaking and you WILL lose some torque. as ecks said, only go 3" if your going for mega power.
gaz Posted October 27, 2006 Posted October 27, 2006 ^with a 4inch straight cut tipthats my preference anyway
RobSR Posted November 26, 2007 Posted November 26, 2007 2.5 inch is plenty unless your going for a 5e lump.3" system with the 4e lump will mean mega loss of back pressure, things will start leaking and you WILL lose some torque. as ecks said, only go 3" if your going for mega power.that my friend is a tuning myth..and not totally true
SiCaln Posted November 26, 2007 Posted November 26, 2007 yea i reckon 2.5" too, if its straight thru cat back can u get me one made up too please, not inc backbox
riko666 Posted November 26, 2007 Posted November 26, 2007 Simon...to reply to a 1yr old thread is a mistake only a noob would make I thought....*sighs* But it depends on your aims with the car - Hayward & Scott are some of the best fabricators around, and they deemed 2.5" all the way suitable to my needs (around 210whp)
SiCaln Posted November 26, 2007 Posted November 26, 2007 sorry i hang my head in shame, just click on 'view new posts' and worked my way thru at work lol
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