Anyone know a site to find graph of engine power and torque over RPM?
Trying to find something to compare the engine of G37 with the BMW 335i graphically.

 

This was taken from the Intakes & Exhaust forum...it shows the effect of the Fujita air-intake on horsepower and torque, but you can just look at the blue baseline:

 

239whp from a 330 engine? Thats like a 30% loss, something is amiss. These cars should be in the 280whp range.

 

it says 261.25 at the bottom

 

I wouldn't use the Fujita dyno. Their baseline is very low and they might have been trying to show greater than realistic gains from their intake. Automobile mag dynoed the car a few months before it came out, that should be a more reputable dyno.

http://www.automobilemag.com/reviews...37_dyno_charts

 

Oh I missed that, its kinda hard to read. Even 261 seems low.

 

I agree, so does 200rwtq

Hmm... well this sucks

 

wow, that goes no where near 330... how did they ever started advertising that?

 

peak whp = 286
peak wtq = 236

Dynamometers measure horsepower/torque to the wheels, not at the crank. There are frictional and heat losses within the drivetrain. Because of this, the horsepower to the wheels is roughly 20% lower than the manufacturer quoted claim of crank horsepower (ie bhp).

260 whp is low. On dyno jets, most G37s should be seeing ~280 whp if the conditions are favorable.

 

I see. thanks for that knowledge.

 

https://www.myg37.com/forums/engine-drivetrain-and-forced-induction/173963-gt-motorsports-g37s-vvel-twin-turbo-4-5l-stroker-motec.html

 

^^^

peak whp = 286
peak wtq = 236

Equates to only a 13% loss through the drivetrain, that's really good.

 

Here are recent basline runs for the G37; look at the first post and the top baseline runs to get an idea of WHP and WTQ.

http://g35driver.com/forums/showthread.php?t=175308