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From standard exhaust to twin 2 inch...

Hairy Eater

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Nov 27, 2005
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Queensland
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2000 VX Executive V6
my VX has standard exhaust... i seen a good 2 inch twin stainless steel system for sale... says its a standard SS system.... would this improve my economy and power.... or is it better to go to 2.5 inch twin system..???
 

IBLOWN

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Sep 13, 2005
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VS V6 TT/'13 VF Senator/'11 WM CapriceV/Hayabusa
i did mine but on a vs. i felt i lost alot of top end. but that was when it was n/a. if you want the looks go twin. if not force inducing go single 2' 3/4. when u look at it, twin 2.5's equals out to 5 inches!!!!!!!1 slightly large!
 

VY03

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Jul 1, 2005
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Margaret River
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2003 VY Acclaim
I would go a single 2.5inch system from the catback for best performance as twin systems are more suited for V8's

The standard SS system is crap
 

vyssls1

sw only EFILIVE Tuner
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Mar 31, 2005
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www.gmperformancecentre.com
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310 rwkw Cam VY SS M6 , EFI LIVE Tuner
use i single 2 1/2" system with the rear muffer as V6's sound s**t without it
 
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