Blown63

Hey guys, I was wondering if anyone can estimate the gains I should expect from a custom ecu tune with Kleeman headers leading to a 3" downpipes midsection (X-Pipe)(no cats/res), Evosport pulley and a Quaife lsd.

Thanks in advance

_AMG_

Depends on the tune.
I gained 60 hp to the wheels with the OE Tune and 2ndary cat delete (straight pipe).

How are you going to mate the Kleeman headers + downpipes to the FMU mids if the FMU system bolts on to the stock headers?
Are you going to cut the FMU piping to make the Kleeman headers work?
I figure you would need to cut the FMU piping to weld the Kleeman down pipes to it.

Blown63

FMU already did the cutting of their pipes to fit the kleemann headers. I already have all this done, i am just curious to see what I would get from a custom tune.

PistolWhipC63

I would guess an average of 50whp.

Blown63

really? I've seen ecu tunes give 50whp on a stock c63. I'd hope it's more than that lol

dodger63

Your running all that and don't have a tune?

Blown63

I just got it all done, I wanted to do the tune last so it can be customized accordingly, I thought that was the best way?

Peabody

Doesn't Kleemann already have a tune to match their headers?

Blown63

Yes they do, but I was hoping to get more from an custom tune.

dodger63

I'm sure a custom tune will net the most power.. Right now your mods I'm sure are not performing to there potential so I'm sure u will see a dramatic increase in power

Blown63

What ballpark of whp are we talking? I am hoping to see gains of over 70+whp does that sound right?