I just filled the tank up, from a quarter, to full with 93.. I did the second post of the ecu reset, and my rpms climb at such a faster rate. I know I need to let the gas cycle through before I'm hard on it again, thank you guys for the help.

 

That sucks to only have a 350 to run top speed of 88mph

 

If you've got some free time check your spark plugs, see if they look white on the ends from running lean/ detonating

 

Have you put 91 back into the gas tank?

Just drive slow and do not punch the gas for the next 2-3 fill ups on 91. Should gives the ECU time to adjust.

 

+1 I realize this is off topic a bit but I never understood the concept. Let's say Premium Unleaded is $4.49 a gallon (current cost locally), that would put Regular Unleaded at $4.29 a gallon. We have an 18 gallon tank if I remember right so 18 times $.20 a gallon comes to a phenomenal savings of $3.60 on a fill up. My car is not worth ruining for a savings of $3.60 every time I fill up.

 

in canada its costs an extra 12$ vs regular gas, still