I am looking at purchasing the AC Schnitzer exhaust for my 08 528. I find the 528 a little slow and the AC adds 38hp.

Any thoughts?

Shall i pull the trigger?

Thanks Guys

Go w/ RPi. I find it VERY VERY hard to believe that an exhaust can add 38hp.

A bolt on exhaust, even with headers will struggle to give 38 horsepower gains (and you wont pass emissions inspections). Especially on a 230~ HP engine.

The gains on the exhaust are like a couple of horsepower and pound/feet of torque.

With that said, an exhaust definitely adds to the "butt dyno" and makes the car more enjoyable to drive. I would go for it.

In all honesty, if you want a faster version of the E60, trade the 528 and get a 535 or a 550. Even the 530 pulls much harder than the 528 (had a few 528 loaners).

Good luck.

Here is the link to their website.

http://www.ac-schnitzer.de/en/bmw-ca...3/engineering/

Its the exhaust plus an ecu.

I know i should have bought a 535 but its too soon to trade this one in.

i still don't believe it.

+1

Why not? Exhaust PLUS ECU remap - could be 38 horses. The engine in 528 is restricted anyhow - its not likely, but it is possible... kinda... I don't know...

well definitely not 38 bhp maybe at the crank.

This ECU and exhaust you posted is also listed for the diesel models, which are easier to tune because of the turbos.

38 crank HP with a tune on a diesel is definitely possible. The NA 528 engine, I don't know..

Go with RPI :twoup: Eloy can install AND dyno it for you to show the REAL gains.