This might be a newb question, and Im going to appologize already just in case.

I have an h2b eg and I tuned on 100 octane with a stock intake manifold and made 263 with 178 tq which was nice for my setup.

12.5:1 comp with a slightly decked head, less than .030 and I have flat valves. I'm thinking the comp is around 12.8:1-12.9:1 so its not super high...

Last night i did some base runs with 91 octane, my tank was empty and all I had was 91 octane in the area so I had to tune with it. I did a baseline: somewhere around 253 and 170tq.

I swapped out intake manifolds and put on a skunk2 intake manifold and base lined at 262hp and 174 tq with a slightly weaker curve than before. After tuning, DNR was able to bring it to 266hp with 173tq and a better curve than I had before.

My question is, would it be worth tuning again with 100 octane, have people seen dramatic differences with pump gas vs 100 octane or higher? Should I be running 100 octane with my compression or is 91 still considered safe? Any help is appreciated. Thanks in advance!


Modified by DSRxCandyh22EG at 11:03 AM 10/3/2008

 

is it that much of a newb question?? haha if anyone can link me to a previous post, that might help also..