[cnavarro]

Jeff, the first ecu I used back in 2000 was an Autronic with the autotune. Aside from it's inability to auto tune at idle, it worked great. We never were able to get the under-run to work properly. It is very important to lock areas in the map that you know are right, because it has a bad habit of messing things up that are fine. Our biggest problems were exhaust leaks- we were running one of the first Tangerine systems on a 914 and the slip joints didn't help with exhaust leaks that kept messing up the tuning. Secondly, we were using a hand laid fiberglass plenum for a single throttle body setup that was meant to be a mockup that ended up going into the car that developed intake leaks. Trust me, if you have everything mechanically sound you'll be able to figure out how to tune it.

The other system that I have experience with is the SDS, and to be honest, it's a value for the money and is easier to tune, even without the auto tune feature and doesn't require a laptop. The hand-held programming unit is very simple and fool proof. I have had customers who have never tuned fuel injection and have been able to use the SDS.