I put my car on the dyno

[BigKriss]

Here's the dyno graph the power is in KW and the torque in NM, both at the wheels. hmm, I assumed max power was around 5700 rpm, what do you guys think? I'm assuming a 25% drivetrain loss, thats around 177 kw / 237 hp (power) and 332 nm / 245ft/lb (torque) at the crankshaft. I have stock internals with the eat chip and cold air intake running on 98 RON optimax. What power / torque figures are other guys getting here for the m30? I thought I would get around 120kw at the wheels. I'm happy. sorry no video or pics.

http://img218.imageshack.us/img218/8596/dyno14hc.jpg

[Paul in NZ]

i got 139 kw at rear hubs,the dyno unit bolts directly to the wheel hubs/and excel interretation of my graph

[BigKriss]

cool, thanks paul. my car had the rear wheels rolling on a drum.

[Incantation]

25% driveline loss? come on dude let's be realistic

[Alexlind123]

Whats bigkriss got that the rest of us dont? Arent 535i's supposed to have 211hp at the crank?

[infinity5]

25% driveline loss? come on dude let's be realistic
What's a more realistic loss?

[pundit]

Whats bigkriss got that the rest of us dont? Arent 535i's supposed to have 211hp at the crank?
EAT chip.

[Alexlind123]

An eat chip really gives that much more power?

[Paul in NZ]

i dont hink thats a realistic loss,my car is bone stock except for a slightly freeer flowing rear muffler and i got 139 kw at rear whelsmand the factory says its 155 kw at the crank,what was the kw at the rear wheels,i cant read that graph

[BigKriss]

Paul you can see the max figures underneath the graph. I thought the graph is pretty easy to read, power on the left and torque on the right. Incantation - I was assuming a 20% driveline loss for manuals and 25% for autos. What do you say is it? The runs where made in 3rd gear which I think is the 1:1 ratio.

[BigKriss]

An eat chip really gives that much more power?
This dyno graph shows you it does, 14% more power, 9% more torque. That assuming you compare it to BMW's figures.

[Paul in NZ]

i did my runs in 4th gear which is 1 to 1,,now that i have got my specs on i can see our outputs were pretty close..i think the gearing will multiply the tourque.I will see if i can find my proper graph to get my tourque figure

[genphreak]

Paul you can see the max figures underneath the graph. I thought the graph is pretty easy to read, power on the left and torque on the right. Incantation - I was assuming a 20% driveline loss for manuals and 25% for autos. What do you say is it? The runs where made in 3rd gear which I think is the 1:1 ratio.AFAIK an auto is generally 30% driveline loss, which makes the figures even more interesting... but I'm no expert on dynos. I await the outcome.

Awesome result btw Kriss!

Of course we all know it is nothing to do with the chip at all... rather its the mad one-eyed squint! ;)