Pertplus

Yes I believe we did change the headbolts. I will double check with James when I pickup the car, but yes I think they were installed even though it's not on the Facebook link.

Sincity

Good peace of mind with the boost. I wonder if JSP changed his or not? Remember he had issues with the engine afterwards and didn't elaborate?

Pertplus

The car is an absolute monnnnnnnster!!! I will take some audio of it starting up. Talked to James and they will probably do a writeup next week, but I will try to get some video/audio posted in the mean time. The car just feels like a wrecking ball, and with the akrapovic slip ons, the tone of the exhaust couldnt be sicker!!! Huge thanks to ACG, James, J and Assan who worked on the car and all the dudes a Weistec for their help!!!

NellyRod

That's awesome. Which header/mid section do you have?

ShaneN.

can't wait for video!

Pertplus

MBH tri-y

Dads C63

Matt,
Congrats on your new found power!!!

Did you have the MBH headers and mids before the S/C install or add them as part of the install?

I'm trying to clarify that you have the Weistec S/C/tune, MBH headers/mids with Akropovic exhaust and have 472RWHP, correct?

ENJOY!!!!

dodger63

Long time no see hows everything keith. Any new results with the built tranny and converter i was expecting to see them?

Pertplus

Yes, everything was already installed prior to the S/C install. Already enjoying this monster!!

Merc63

Isn't 472rwhp what guys make with headers and tune??

Pertplus

If this was on the other dyno it would've been around 515. Jim's car is at about 480hp on the ACG dyno.

Sincity

Traction must be a bit*h from a dig.

NellyRod

I had an 09 C63 with MBH headers, mid pipes, tune, and ROW air boxes. My best pull on the ACG dyno was 439 rwhp.

xtyper

I have a similar setup on my 2011 and put down 445whp on ACG's Mustang Dyno. So unless it's been recalibrated recently, 472whp seems a bit low with the addition of a supercharger.

Can you post the dyno graph and AFR so we can take a look?

Pertplus

They did recently recalibrate the dyno. Here is a graph of the dyno from last year w/o the supercharger from the Dyno Jet last Summer - and then the interim (NOT final) graph I received from earlier this week from James prior them finishing up the car. I dont have the AFR numbers, but even if one doesnt take the actual numbers as Gospel, the reading from the car with MBH headers, ACG tune, Exhaust from the Dyno Jet (around 440) vs. the baseline reading from the same mods with the Mustang - the delta in my opinion is impressive regardless of whether I gained horsepower using the DynoJet or Mustang dyno numbers.

BenzoBoi

Congrats buddy! I don't know how I've missed this thread. I saw a few pics on FB.

Can't imagine how much fun you're having now! Enjoy your awaken beast!

Pertplus

Thanks!!! The car is frighteningly fast. I've never seen other cars move over from the left lane so quickly! We definitely need to get together soon!

xtyper

Thanks Matt for sharing the info. The recalibration explains a lot, and it sounds like the next time I dyno there I will be very disappointed.

Enjoy your new monster!

Pertplus

Believe me, I was surprised too. I'm like, wait, my last dyno had 440hp and I only gained 30 something hp? But then seeing the baseline for this latest dyno made more sense. At the end of the day, it's how the car drives and feels that matters. ACG has been hella swamped, but a more in depth analysis will follow.

mthis

congrats
Enjoy the new power

tgoss

Congrats man! She now is truly beauty and the beast in one package.

Enjoy the new found sauce in good health.

crazy1469

congrats, cant wait to see a video of it....just wondering 445whp isn't that a bit low for a SC???? specially paying 15k+ for a kit i would expect to be in the 500's

c32AMG-DTM

Apparently on this particular dyno, a C63 with MBH LT's, mids, Akra exhaust, and a Stage 2 tune, only makes around 380 rwhp. As the OP points out, it's the delta that matters...