Dyno Results - MBH Headers & ACGSD Tune
I have to say I couldn't be more pleased with my choice of mods. The MBH headers are truly a work of art, and one cannot truly appreciate this until they see them in person. With the resonated catless midpipes, the sound is perfect. Very mellow and subdued during cruising and partial throttle, but MADNESS at WOT. Also, the ACGSD Stage 2 tune that James flashed me with (written specifically for this header setup) feels great. And that's coming from a guy who's had several different vendor tunes.
Attached are my before & after dyno results, the first graph showing the power curves, the next showing AFR.
"Baseline" = bone stock (charcoals and stock paper filters intact)
363whp/343wtq
"Tune + MBH Headers" = charcoals removed, AFE Pro Dry filters, MBH headers, MBH resonated catless midpipes, ACGSD Stage 2 tune, 91 octane Chevron fuel
470whp/416wtq
Needless to say I couldn't be more pleased with these power results, especially given the safety of the almost stocklike AFR curve. Now I just need to get to the track to back up these dyno figures.
For anyone considering going the header route, I highly recommend this combo.
Last edited by xtyper; Jun 8, 2011 at 07:23 PM.
Last edited by xtyper; Jun 7, 2011 at 02:21 PM.
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I'm eager to see how this equates to the racetrack.

The Best of Mercedes & AMG
Now if I could just find a decent track here in SoCal to give the car a fair chance. Best shot is probably at Famoso in the fall when the weather cools off.
Last edited by xtyper; Jun 8, 2011 at 07:20 PM.
I'm glad to see that you are extremely pleased with the results. Good to also see an independent dyno of the results.
for those who are curious:
Pricing is as followed:
$3,650.00 C63 Tri-Y Long Tube Headers, Stainless Steel, w/V-band adapter flange
$695.00 C63 (Optional) 3" Connecting Mid Pipes **For use with Long Tube Headers**
$300.00 C63 (Optional) Resonator 3" add on for Mid Pipes
$575.00 Long tube Header Installation
ACG ECU tune is $1395
Our package 2 which includes the above headers and matched ECU with BMC filters is $6000.00 (price does not include installation or sales tax)
Last edited by James@ACG; Jun 7, 2011 at 03:31 PM.

Hopefully some Vbox results coming soon.




