Hello, I have a Matrix TR with the Corsa 28, im having problems tuning the engine. If I lean it out to where it runs pretty good the temps climb to 300 deg+ and if I richin it up it runs like crap. Im running 20 % fuel, im about 3 turns out on the HSN ive got a good trail of smoke out the pipe but it gets hot as h.... I have 2 other cars that tune pretty easy but im starting to think this engine is crap. Any suggestions. Thanks.