PIR4TE
Banned
- Joined
- Mar 15, 2011
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- Black Pearl
^^ if you didn't notice an increase changing from stock headers to HSV extractors then you have a problem.
Saying that headers don't make power but its the axleback muffler replacement... well you have it arse about is all. The axleback muffler makes the exhaust sound good.
I had the above mods I was getting 255kw and more importantly 580nm. That's a huge gain over stock setup for just $25/kw.
No need to toss the stock muffler axle back, that far back they are not so restrictive. I reckon make more power up front so they do their job muffling it rather than making bugger all power and amplifying a fart with a straight through axle back.
Saying that headers don't make power but its the axleback muffler replacement... well you have it arse about is all. The axleback muffler makes the exhaust sound good.
I had the above mods I was getting 255kw and more importantly 580nm. That's a huge gain over stock setup for just $25/kw.
No need to toss the stock muffler axle back, that far back they are not so restrictive. I reckon make more power up front so they do their job muffling it rather than making bugger all power and amplifying a fart with a straight through axle back.