Even with a slight knock sense between 4-5k rpm (93 octane) I still got 671 wheel HP out of her. With the knock sense I can see where the higher octane fuel should help our cars improve performance some!
By the way, made the pulls in 6th gear (1:1). Top of 6th read almost 200mph.
Copy that pigman! Actually my plan is to run the fuel down and fill up with 100 unleaded pump gas and make another pull Friday and see what that does. But yes. I will be at the track sometime in May/ June.
Copy that pigman! Actually my plan is to run the fuel down and fill up with 100 unleaded pump gas and make another pull Friday and see what that does. But yes. I will be at the track sometime in May/ June.
I have done a lot of octane testing with a stock tune and custom tune with out changing the custom tune for higher octane as i always keep 26 degrees in my custom tune as it was dynoed with 91 octane. My custom tune would hold 24 degrees at wot with 91 gas and hold 26 with my 5 gal 50/50 mix of vp109 & 91.
If your pcm isnt pulling timing then higher octane wont help BUT if you use vp109 the higher oxygen in the gas will help make more hp. 100 at the pump has 3.3% oxygen and 91or 93 has 3.5% and vp109 has 6.3% oxy so you see how it can help. I have used 100,vp109 and sunoco 104 along with sunoco E15 and they all worked after mixing with my 91 and in the fuel rails as there was no pcm learning. I always put the higher octane in 5 miles out from the track and by the time i got there it was in the fuel rails. My gas mix ended up with 98 octane with 4.05% oxygen as our ca 91 only has 1.8% oxy so it really made a diff. This 50/50 gas mix worked great with my custom tuned 2007 & 2012 running a bone stock tune as it picked up .5 and 4 mph in the 1/8 mile so we fig out the stock tune had to be pulling timing other wise the gas mix probably wouldnt have worked on the stock tune.
Great numbers indeed! :thumbsup:
I still have a hard time believing that the HP and TQ loss with that car. I'm still thinking that car outs out more than 707HP/650TQ at the crank. I know it's been discussed and debated an all, but man, that's very little drive line loss at all.