I am thinking of the Umnitza MTech kit upgrade. What do you think of the MTech vs M5 rear bumper? I really like the M5 rear, but it requires a quad exhaust upgrade. Any recommendations? I have an '07 pre-lci E60 530i. Thanks in advance.

 

I personally would go for the M5 rear as I really want to get a quad exhaust setup. However that is extra $$$. Do you like the idea of a quad exhaust setup? If you do go for it.

 

i prefer the mtech front and rear. i got the mtech kit from umnitza. it's at the shop getting ready for paint.

 

Thanks guys. Any idea of what price a quad set up would be? Brand recommendations? Pluses and minuses of the quad exhaust on a V6 engine? Is there a power loss horsepower wise?

 

We offer the quad bumper and quad exhaust at the same time. You gain HP based on our dyno results on it.
We have a $100 off if you buy the bumper AND the exhaust.
https://5series.net/forums/topic/119...1#entry1401591