E.fifty.5

Finally i got my car on the dyno yesterday and would like to share the result...you can see the engine HPO and in the reading you'll see the RWHP..I realized that the HP is not transfering to the RW as it should be...VRUS and Grumpy, your opinion will be apreciated

Mods: Kleeman Pully, Headers, ECU and TB

E55 RUSS

Good numbers but you should get a bit more with TB...

E55HID

is it 584 rwhp??

E.fifty.5

its only 435 rwhp...without Racing Air Filters...i dont know why its not transfering more to the RW

E.fifty.5

Fikse

rwhp should be higher for sure, but why are they using a 33% factor to get to 584HP?

newton22

lol, 33%. 435 rwhp is more like ~515 bhp.

E.fifty.5

what is 33% factor? i am really a new guy with the dyno.

Fast55

A/F ratio sucks is the first thing I notice.

vraa

A dyno measures power to the rear wheels. People use a loss / driveline loss percentage to measure how much power is lost due to the transmission and what not as compared to crank horsepower (which is what manufacturers usually publish).

33% is a large loss. Almost too much.
Use 17%.
Manual cars are around 15% (usually) and autos are around 20% (usually). Our (5sp AMG) is an 'efficient' auto (whatever that means).

Do I get my chocolate cookie now?

E.fifty.5

chocalate cookie granted to you....thanks for the information, but what can i do to get the proper power to the car...the problem is A/F ratio sucks, i know but what is the solution...i am really confussed here

E.fifty.5

Kleeman told me that the A/F ratio is perfect, even though i read in this forum that it should be around 11.5 - 12.5!!! i think because he gets the file from Kleeman germany and then just downloads it to the ECU, he dosnt programm the ECU himself. the thing is what should i tell them to do to get the proper A/F ratio range?

I really apreciate your experts opinion

Khaled

stevebez

My understanding is that the torque convertor is a fully lockable T/Q so there is no dynamic loss when locked up, and it alss locks up earlier than regular auto's.

So at high rpm this should behave very close to a manual in terms of drive train loss, but a bit more due to its high mass / inertia. You may need to apply a higher DT loss at low rpms before the TQ locks up, but for peak power this is not necesary.

Correct me if I am wrong anyone.

pas

that is the first dyno graph I have ever seen without a torque curve, where is the torque????

E.fifty.5

Ill run my car again today and see the difference...will post the graph soon..

Grumpy666

An automatic transmission is also subject to pumping losses - driving the front pump will consume some power.

Grumpy666

The first time I read this thread, I thought it was a prank post. 584 HP? Not from the data in the posted chart. With the mods listed (K2 w/TB), 580 corrected crank HP is not an unreasonable expectation. My guess is the dyno shop fudged the chart to give an expected result, not a measured result. If the car were mine, I would take it somewhere else.

From the data chart it looks like the car is bumping up against the speed limiter, so the peak HP indicated is somewhat lower than what the true peak HP would be at 6100 RPM. Also note the test temperature - really high. Assuming there are no correction factors applied to the data in the chart, this car is probably make 470-480 WHP, and could probably make a little more with an ECU tune to pull out a little fuel up top (3500 RPM and above).

Fast55

As Grumpy points out, you're WAY rich on top. It sounds to me as if the guy is saying what Kleemann expects from that code, not what the actual results are. Your A/F is into the 10's above 3800 RPM. Anything below 11 is not good for the motor or for making making max power. Not dangerous, but you will definitely see more power with it slightly leaner. Torque should increase as well.

E.fifty.5

plugged my car on Star Diagnos to do the -10 fan setting, found out that i can also change the fuel setting from baseline to 93 ocatain which is the maximum, then went for a dyno run...LOST almost 60 RWHP!!! why? attached is the Faults from the SD and my dyno run....man....my car has some proplems....is it the program? should i go back and change the settings to baseline? or should i re-program the ecu? hope one of you guys can help explain whats wrong..

E.fifty.5

the technician that plugged the Star D did the following:

1. Ingnition from base to 93 octain.
2. mixture from base to slightly enrched.
3. fan setting to -10.

would these settings conflict will Kleeman Program?

E.fifty.5

the speed limiter was removed...but the dyno setting is to 280kph (safty reasons he said) so i couldnt reach the red line.

SCM3

Mid 11's with Pump and 12's (AFR) with Race gas will get you the most HP.

E.fifty.5

you guys can do better than this.....

vrus

I know there is a place in Star where you can advance timing +6dg.. I believe that is the function of the Fuel quality (93 octane).. If you change that setting on an already modified ECU (ie. kleemann) you might be advancing the ignition timing too far and causing problems.. I would take the ignition advance off..

I just got my Star working so later today when I have some free time I will be messing around with it on the car to do some "exploring".

The -10 mod is fine but I would mess with fuel or enrichment becaus the kleemann programming already does that.

E.fifty.5

I will set the fuel quality back to base, and hope i dont have to send the ecu back to kleeman. is the fuel injection fault causing the car to be rich?