RWHP gains with headers and tune? Seems a bit too good to be true?
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Senior Member
Joined: Dec 2012
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From: Wyoming
ford svt's, and C63!!!
RWHP gains with headers and tune? Seems a bit too good to be true?
I keep seeing "tunes" and "headers" giving very favorable results in the hp department, I'd expect between 25-45hp increase with headers and tune, but people seem to be doubling that, and I'm skeptical to say the least.
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From: NY
E63S | X5
Why so skeptical? Many cars across the board are limited big time from factory... I will not be able to do a dyno proven before and after of my C63 (which I pick up tuesday) because it is already tuned but if I may use a different platform...
My bmw 135i from factory dyno's at 265whp/291wtq on 91 oct. After a tune, downpipes, intakes and an e85 mix it's at 450whp/476wtq. I know, different car, but the point is just how limited cars are from factory. The gain in the bmw is 185whp/185wtq just by opening it up a bit and some e85.
I don't doubt for a minute that once you get these v8's tuned and flowing a little better that you'd see the gains you have seen around the boards.
My bmw 135i from factory dyno's at 265whp/291wtq on 91 oct. After a tune, downpipes, intakes and an e85 mix it's at 450whp/476wtq. I know, different car, but the point is just how limited cars are from factory. The gain in the bmw is 185whp/185wtq just by opening it up a bit and some e85.
I don't doubt for a minute that once you get these v8's tuned and flowing a little better that you'd see the gains you have seen around the boards.
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From: Central NJ
335i
This identical engine produces about 510-520 HP in other AMG variants with the difference being just mapping and exhaust, and even then there is still room for more power. I wouldn't doubt the numbers when independant dyno graphs, drag slips and roll-on races are behind to support it.
I find little reason to doubt the substantial gains to be had from a tune+headers when those mods, the C63, and its engine have been around for about 6-7 years now.
I find little reason to doubt the substantial gains to be had from a tune+headers when those mods, the C63, and its engine have been around for about 6-7 years now.
Last edited by 02Drunkenup; Apr 21, 2013 at 08:12 PM.
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From: Walnut Creek, CA
Vivid Racing '09 C63 AMG
Talk to anyone who's dyno'd their car before and after a tune. A 40-60 hp gain is very manageable for a tune alone. Once you add headers and an exhaust, add another 20-40 hp.
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From: Central Florida
2014 Audi RS7
A standard C63 will dyno around 360-375rwhp bone stock. With a good tune, L/T headers(no cats up front), mid section, and posssibly no secondary cats but maintaining the resonators and stock rear half of the exhaust you can expect 440-475rwhp. The stock exhaust manifolds are the primary restriction along with the primary cats. Like stated above a good tune will net you 40-60rwhp and adding exhaust mods will net another 20-40 so you stand to gain 60-100rwhp depending on what tune and headers you choose.
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your mom
C63 is a different case.
You need to remember that this is essentially the same motor as used in other AMG (E63 / S63) variants (pre TT versions), where it happens to make 510 (550 with AMG development package)
So, in essence, I am not surprised that the 6.2 makes 50-60 RWHP just with a tune.
You need to remember that this is essentially the same motor as used in other AMG (E63 / S63) variants (pre TT versions), where it happens to make 510 (550 with AMG development package)
So, in essence, I am not surprised that the 6.2 makes 50-60 RWHP just with a tune.
