Originally Posted by turbinator
Originally Posted by bbigman2000
how would you work round the problem of Possible different compression ratio with me fitting my new engine ?
There is no need to be afraid to use a lower comp engine on the same chip (mapped for higher compression)... because this will make it safer (not faster)... you only need to adjust the ignitionretard again in the map..
Yes but not the other way round which is what the situation looks like it could be (ie. running a low comp chip & then using that in std. or higher comp ratio engine).