I want to monitor the engine on my 2002 ZR 600 EFI alittle better, and I don't know what the best way to go is. I was thinking an exhaust temp sensor which would tell me if I am running lean or rich. I don't know if I would need a temp sensor as well or if it would be over kill. I have been looking at the Westach Gauges and the AC temp Gauge. Does anyone have some input on this subject. I am looking for any and all the info I can get. Thanks.