Rockin_AMG

Just got MHP headers and a ESS tune on my car last week and was able to run it at the omega motorsports no fly zone event this past weekend. Had a blast, hit 142mph in the half mile with a roll on start of about 40mph.

Noticed a huge difference in how hard the car pulls but was somewhat disappointed in the top end performance. When i would get to around 130, the acceleration just wasnt there anymore, felt like the car was just running out of breath. I still have the stock intake with charcoal filter and oem air filter, maybe that is holding me up a bit... Also running on 91 oct fuel.

Oh and the car is friggin loud... Draws alot of attention for sure!

Leec33

Glad to see someone invest in some headers, they are amazing!

A tip that might help is to open up the exhaust a bit to let it breath. Such as secondary cat delete, or a resonator delete. I just did secondaries and definitely noticed a difference up top forsure.

Rockin_AMG

Ya the next thing I'm saving for is more exhaust work. I want to replace the secondary cats with some 200 cell high flow and replace the resonator with a high flow one. Not sure if I will have it fabbed up for me or if Ill just bite the bullet and get a premade system... Either way

GRam

Just ordered the MHP system tonight actually, including the hi-flow cats. Hoping I don't see a drop in top end pull? Not that I'm running around at high speeds on public roads, just want to keep driving characteristics the same as they are now, which to say is stellar lol

I am Jeff

How are you paring up the MHP LT's to the stock secondary pipes? When I was doing my install, I saw that the diameter of the MHP LT collectors are quite a bit larger than the OEM setup.

If you change out the secondaries with a properly sized mid, you will definitely feel your car continue to pull above 130. That seems to be the choking point for your exhaust setup. I have 200 cell cats/ARH mids/Xpipe and can tell you that the car pulls even with a regular non header tune. The engine revs a lot faster and smoother, as though it's been unhinged.

AMG6.3

I would check your tune and definitely run 93 octane if you can. I am surprised that u only picked up 102 mph

Rockin_AMG

I hit 142, not 102. Anyway, I have the mhp headers running into straight through mhp mid pipes and then into the oem back.

itzjonjon69

Interesting... I didn't know ESS has a tune available for our C63's! I wish i could have gone to the event and been with my old employer/shop (EVOMS). You were at the Goodspeed booth correct?

Rockin_AMG

Ya I was. I was a great time, perfect weather and a lot of cool cars out there!

itzjonjon69

I was looking at pictures from the event and i saw a iridium silver C63 and thought heh someone has a car just like mine! We should meet up some time i'm in Mesa. I'm currently running a cat and resonator delete (straight pipes) and was thinking about getting MBH or ARH headers next!

Rockin_AMG

Thought I would send a PM, but ya I'm down to meet up sometime. Maybe we could go to the pavs, I'll be free after Christmas/early January sometime...
My name is Aaron btw.