96 octane, 1/4 tank later...
#77
I also think some engines /dme are more prone to pulling timing than others. This could be the problem but Pete reports that he has found the same on 3 cars but sample size is still too small to definitively blame it on gt4's aversion to ca gas
#78
Rennlist Member
Thread Starter
Next step is definitely figuring a time to go visit my friends' chassis dyno with a couple of jugs of high test in tow. It'll be a while, though, as it's pretty low priority.
#79
Rennlist Member
Three out of whatever number of GT4s shipped to CA is a huge PPM number.
#80
Rennlist Member
Hopefully before end of year I'll have mine on a dyno stock and will try 91 and 100 stock to see difference...
#81
Rennlist Member
Thread Starter
Two samples in two parts of the state will be better than one.
If you beat me to it, just remember the ECU will need time to decide it's on the improved fuel and alter parameters to take advantage of it. It may be better to go in on the end of a tank of "93", then switch to 91 pump gas and run the car around for a while before strapping it back onto the dyno. Of course, ambient temps, pressure, heat soak, and all the other joys of chassis dyno tests will be present. Even so, hopefully we'll get some useful hard data or at least some clues as to how the stock ECU is working with 91 vs. 93+.
#83
Rennlist Member
Mine with 100 octane fuel and on "hubdyno" showed 390 flywheel hp... totally stock...
#84
#85
Burning Brakes
This one is just down the street from me...Graham's Newport Hills Union 76, 2690 San Miguel Rd., Newport Beach CA.
I was always under the impression that racing fuel is pointless in a street car unless it's been tuned specifically for it. Doesn't the ECU adjust for the fuel?
I was always under the impression that racing fuel is pointless in a street car unless it's been tuned specifically for it. Doesn't the ECU adjust for the fuel?