I've driven both MTM 1+ and MRC and like both.
I'm concerned about pinging in Houston summers...
Any thoughts on the relative merrits of either in a HOT climate. I's also consider IA but have never driven a car with that programing.
Thoughts? Others to consider?
tia

With the wastegate spring set right and the fuel pump upgraded, I am really happy with the car's response.

FWIW I have the RS2 manifold also.

but I have some lean issue to resolve before I switch over.

You can probably run 3.0 bar in the winter, but I'd crank it down to 2.7 or 2.8 bar max for the summer months.

I live in Atlanta and I just park the car in the garage for most of the summer. Once the AC compressor kicks in, the car is no fun anymore.

<a href="http://forums.audiworld.com/s4s6/msgs/167021.phtml">http://forums.audiworld.com/s4s6/msgs/167021.phtml</a>

There's no better solution