[onfireX5]

Originally Posted by hkochhar

I've been checking out a couple Plug and Play tuning boxes, specifically:


https://www.vividracing.com/tuned-ec...152408030.html


https://www.chiptuning.shop/en/bmw/5...441kw-4395ccm/


Is this for real? 147 hp gains? is it safe? super tempted to pull the trigger on one

I usually do an ECU flash like I did on my x6m but was considering this option this time around

I’m waiting for some actual results with AFR, throttle closure, timing,boost. Too early for me.

Manhart and TDI can be added to your list. A “reasonable “ increase would be 2-3psi and 50-80hp.