Originally Posted by BigRob74
my tuner knows they are maxxed out, and he has been tuning subes forever. its actually irrelevant to me, i am going with e85 and need larger injectors anyway. id rather spend the 500 for the injectors than 5 grand on a new motor..
Well, you're going with E85 so you do need them. But if you did not, I seriously question your need. Ask your tune how he knows your injector is too small. I'd really like to hear the assessment. Since someone has already written a good explanation, I will just refer to it:
Pretty much explains what IDC is. Again, it's a calculated value from IPW and it's OK for it to be little over 100%. The number is just a reflection of the IPW in relation to the intake stroke. Given that the intake valve stays open well past BDC at high RPMs, the chance that injector is spraying on a closed valve is very small.
I don't know your tuner and I am sure he is great but don't use runtime as a measure of competence. The two are really not synonymous.