BMW M4 Standard versus M4 Club Sport Dyno w/ Burble Video

[BPMSport]

In stock form, the M3/M4 without Competition package sports 425HP and 550nm or 410lb/ft of torque.

The M3 CS Edition that was just released features an updated tune with 454HP and 50 newton meters of torque more from the factory - bringing total output in lb/ft up by 33lb/ft to 443lb/ft.

During our dyno test of the stock M4 software versus the stock M4 CS software, we observed an increase of 43 wheel torque max between the two variants, and a max horsepower increase of about 25HP to the wheels. The gains are through the entire rev range, giving the CS a serious advantage - not to mention all of the features and extras it has as well.

Have a look at the dyno below.

2015 M3 Stock vs. M3 Club Sport Dyno




2015 M3 Stock vs. BPM Stage II+ Dyno - Stock Downpipes - 94 Oct



We picked up 113ft/lbs to the wheels and 101 horsepower on a 2015 M4 with just a catback exhaust and our Stage 2+ software. Gains in excess of the CS software were 80 wheel horsepower and 44ft/lbs, with the largest torque gain of 100ft/lbs at ~4400RPM (130ft/lbs over stock spec!). A 94 octane mix was used. Note that Stage II+ software is not suited for vehicles without downpipes and supporting modifications, but we wanted to test it and see how the car responded.

[BPMSport]

CS Burble Video

[whoop_ass]

Thanks for the info Mike
another good option and that's a great delta for sure as the dynojet you used reads a low baseline.

[BuLoOoSki]

Great results, I'm sure that CS tune will be popular.

Btw, what's the difference between your Stage II and Stage II+? Just different fuel mix requirement?

[lazycat]

Any idea what psi the CS tune is running vs the ZCP?

[shellman0911]

Mike, what exhaust setup is the car in the video running?

Dave