BNut

You get a cookie if you can tell me which car this dyno came from.
1) The car is stock.
2) It has a 5spd transmission.
3) Its a 2001 model year.

4thGSi

Is it euro, japanese, or american car?

4thGSi

It's a 3 series BMW right

NJTypeS

i wouldn't be surprised if it was a stock type s.

4thGSi

I clicked the pic properties and it came from e46fanatics sites..

BNut

Hehe, somebody was smart!

Yea its a 3 series BMW.

Maximized

330i manual....Give me my cookie

Dom418

Soooo.... why should we be afraid?? Same HP, and a little more Torque than an A5 CL-S???

Wait until we see a 6 speed dyno... you should compare Manual vs. Manual right??

I'm not afraid!

JZ

Damn, I was gonna guess the altima.

It's a nice curve, though. Does look an awful lot like ours.

someguy

I've always been impressed with the transmission efficiency on BMW 328/330s. The ZF unit is very good.

This car has a 11.3% hp loss and only a 6% torque loss to the wheels. Not bad. I wonder if a UUC flywheel would improve that

Nashua_Night_Hawk

It has at least 15 lbft of more torque but the redline is lower than Type-S, So, if we add a only RES-like mod.... we will look better

But add CAI, RES and Headers we would look way better

Dom418

True.. but that dyno is for stock, so we should be comparing stock... we need to do manual vs. manual though

BNut

Is the transmission really that efficient or could it be that BMW is under rating their engines?

Take the S2000 for example. Is their ANY reason why Honda would put a crappy manual in that car? When is the last time you saw a stock S2000 dyno 210hp at the wheels? The stock S2000 dyno charts (dyno jet) I remember seeing were b/w 195-205hp.

I just find it amazing that an engine rated for 225 is putting down right at 200hp at the wheels.

Now lets get some 6spd CL-S's dyno'd so we can have a good comparison!

someguy

The motors are either all underrated, or the trasmissions really are that efficient. Some have speculated that they are underrated, they do all feel very strong.

Take this for example:



This is a 2000 328Ci, top line is CAI, bottom is stock. The 328s have the same transmission as 330s.

Stock, this car has a loss of 10.3% hp and 8.7% torque. Not bad at all.

BNut

Wow... that's pretty nice for a 328!

I wonder what is happening at 4,000 rpms in the BMW engine.

I've notice that dip occurs about the same RPM on both the 330 and the 328.

Maximized

VANOS

someguy

I hear that the software retards timing at 4K because the California emissions test is at 4K rpms...

But, the 2.8L and 3L BMW I-6s are very torquey and have a very smooth powerband.

AcuraFanatic

Eh, 3-series BMW's do nothing for me. They're too small, but they're damn quick, no doubt.

I sort of wish Acura made an I-6.

BNut

I wouldn't be suprised. My cousins husband is a motorcyle nut and he was showing me a spread from some sports bike magazine that had dyno's of about 20-30 different bikes. EVERY bike had this funky dip in the dyno curve at the same RPM so I was asking him about it, and he explained that was the RPM at which the bikes were tested at for emissions.

Go figure...