I have a 92 teg w/ ls vtec turbo full build fully done (electronics) the whole 9 yards. Car is running lean to rich to stalling. we have changed everything over from my running race car to the teg w/ the same outcome. we have only changed the main relay and map sensor when it comes to the sensors...We have built this set up numerous times with no issues. We are a performance shop/ machine shop/ race engine builder and we are stumped. It is hondata tuned to a T... thanks Russ The car ran perfect for a week and a half and now it breaks up under boost and or vtec... car runs ok on low cam a little rich but ok. Then under boost /vtec it runs dead rich and breaks up. everything has been taken out of my race car to try and get this car going right..