Next up Kleemann Camshafts hopefully, they claim 15-18hp on the crank lets see what I get with my personalised setup. My exhaust system is more free flowing than theirs, I've got the resonator removed with an x pipe.

 

You should also check renntech's carbon airbox. Supposed to yield big gains too.
Make sure to get an ecu flash with your cams though.

 

Very impressive moe. Enjoy

 

I have that airbox in mind, not big gains like 6-8 rwhp. I've spoke with Kleemann's ceo, he says that the ecu doesnt need a flash with cams, it adjusts itself.

 

Mashkoor,

I was expecting it,

 

very nice. My stock tt with 480BHP showed 407whp on a dyno jet, that is about a 15% loss. I think your car is around 450BHP.

 

Maybe but I dont think so, because 360hp is the stock with basic boltons and no internals I dont think I could gain 90 hp on a naturally aspirated car.

 

I just checked out E55's and SL55's dyno

390-429rwhp on 74mm throttle bodies.

so I am very close to their power on the wheels but on a roll I am faster because of lower weight.

 

Sounds like your car will be wickedly fast!
Nice to see that you're charting the impact of each mod by successive dyno's too.
I do think you're under estimating the bhp by a huge amount though. If you had 392 whp from 400bhp, that would be 98% driveline efficiency. I'm no engineer but I believe that's mechanically impossible.

My understanding is that most cars have between 16 and 22% loss from the engine to the wheels.
My experience with Dynojet and the S/C'd 55 used an 18% loss rate.

I think your bhp is well above what you mention, but if you were to put it on a DynoDynamics machine you'd be bummed at the loss of power. It's often 15% below the Dynojet!

In then end, what matters is what it can do on the road.
I've been on a road course in the SLK55 and it's great fun. You've got a good one there!

 

Thank you for the clarification.