Fuel for Stock

[terry1]

My engine, on the dyno, showed 1% increase, in HP, using C11
vs VP110 or Sunoco standard.
Terry K

[west coast]

I have run all the legal unleaded fuels in my car C9,C10, currently running sunoco 260 gtx. if all you are looking for is et there are better places to find it work on your tune. Leaded fuels kill o2 sensors and you never know how long they will last they will cause you time and money or rounds figuring it out cause it always happens at a bad time. My car is no rocket ship but can put it close to the top of the Q sheet. The one problem with these fuels is the availability of them, not the easiest to find some times, i buy it by they barrel. price can be all over the place, last barrel i bought was under 600. i have never had a problem passing fuel check, except when NHRA removed C9 from the appoved list without any notice, that was a bad morning at the first race of the year.

[Mark Yacavone]

Originally Posted by west coast

. i have never had a problem passing fuel check, except when NHRA removed C9 from the appoved list without any notice, that was a bad morning at the first race of the year.

James, Was that the stuff that Av/gas passed as?
You know what happened there . Wouldn't want the racers to save a few bucks.

[terry1]

"ss3011" all that was done was change the fuel.
TK

[Signman]

Originally Posted by Mark Yacavone

James, Was that the stuff that Av/gas passed as?
You know what happened there . Wouldn't want the racers to save a few bucks.

Went through the same thing with C9 made a moderate big deal out of it and pressed for an answer which came from on high: At national events all fuels are tested for comparison use at fuel check, C9 was found race to race to not test consistent.

Had a very good tune, a fast burning fuel reasonably priced, the car could go 90 under and consistency was coming around. C11 was way faster but requires fogging and more care in storage.

[Dan Fahey]

I can find Sunoco 260Gtx at Island Dragway from time to time.
Can you mix the Legal Unleaded with C11?

Just prefer the Unleaded fuels for FI.
Then Sunoco use to have 100 octane unleaded right from the pumps.
Dad used it in the lawn mowers.
A Neighbor had several FI Corvettes said he did not have FI tuning issues like others did with Leaded leaded fuels.
That stuck in my mind..

Read in books that lead crystalized on the FI tips.
Figure would also impact the O2 sensors..

D

[ss3011]

Originally Posted by terry1

My engine, on the dyno, showed 1% increase, in HP, using C11
vs VP110 or Sunoco standard.
Terry K

Did you change anything else , or did you just change the fuel ?