Quote Originally Posted by 99GT2dr View Post
I have 42's in my regal with E85, with the 3.5" pulley I'm at almost 80% IDC. About the same IDC I had with the stock injectors and stock pulley. At what RPM is he seeing 20 ms?

Edit: And what size pulley is he running?
He is having good luck with a 3.0" pulley. The 20ms pulse is at the 1-2 shift, about 6300-6400 rpm. Keep in mind that we are at 6000ft+ elevation, air here is about 20% thinner than sea level. On an average day we scan 80 kpa MAP with the engine turned off.

Is there a way to determine IDC from pulse milliseconds? We use UVscan and Tiny Tuner to build tunes. Use DHP Powrtuner to flash.

Thanks again for your help!