Thinking of doing a Renntech or DME Stage 2 tune on my G63. Anyone done it? Worth it?

 

go buy your girlfriend a hot dog

 

I've had Renntech on a G65 and a GT63S. Both make very good power gains, and throttle response seems to be a touch better. A buddy of mine had a Renntech tune on his C63S, and it ran great for thousands of miles. One day it developed a CEL, and after several reflashings of the computer it still came back on. Eventually Renntech told him he should remove it, and they gave him a refund. I thought that was pretty stand up for them to do that after he had the tune for almost a year.

DME has a great reputation as well. I've been wanting to install one on some customer's trucks, but no one has pulled the trigger yet.