181 ft/lb stock....not much, but good for a 2.5L. I've done a 6.59 0-60 which is on a good run, but i can notice that it doesn't pull as hard past 4500 rpm which I was told was because of a restrictive intake manifold. It could be bogus though, I just though it had something to do with emissions?
here is the text on the website if anyone is interested.....sorry to hijack
"The Problem: Power Dying Out at 4500 RPMs
BMW's 96-99 6 cylinder engines found in the 323, 328, and M3 make fantastic torque in the lower RPM's and exhibit great daily driving power bands. However, the restrictive manifold used on these M52/S52 engines has a significant flaw: it simply doesn't flow enough air from 4500RPMs and up to keep your engine producing increasing horsepower to redline. The result? High RPM driving simply isn't as satisfying as it should be with power dying out so rapidly.
The Solution: A High Flowing Intake Manifold from the M50 Engine
The design of the 92-95 325 and M3 intake manifold from the M50 engine is different: the intake runner paths are significantly larger, allowing these engines to breathe more freely. Installation of this higher-flow intake manifold into the newer 96-99 323, 328, and M3 vehicles yields dramatic results: power gains as much as 20hp and a much more linear powerband that DOESN'T die out in the high RPMs. In fact, it does just the opposite, pressing you into your seat all the way to redline, drastically improving acceleration."