Joshua Sandel Posted June 19, 2008 Report Share Posted June 19, 2008 Hello, I am picking up a LEM4 setup for a decent price and have some questions. How old is the LEM4? I will be running this on a 2.5L Naturally aspirated motor, will this ECU provide me with a decent amount of control over the motor. I know it will not have all the vast functions of the G3 setup but I have tried the expensive hydra and it really did not do much for the price. My application is 13:1 compression ratio, cams, mild headwork, free flowing exhaust. About how much would it cost to upgrade this ecu? And is this a wire in only or is there a wiring harness that can be bought that will plug and play with my application. Thanks alot Josh Quote Link to comment Share on other sites More sharing options...
Simon Posted June 26, 2008 Report Share Posted June 26, 2008 The last run of V4 ecu's was around 5 years ago. I would say it should do an OK job the new G3s are much improved particularly in areas like cold start, air temp and altitude correction. You can upgrade to Version 5 firmware which will give you a little but of an improvement but not a dramatic one. This was a wire in only ECU . Only adapters I know of are diy ones. Quote Link to comment Share on other sites More sharing options...
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