87fox408

does that stuff help at all or is it a waste of money

frdmstng1986GT

waste of money.

tmajikman

+1 waste of money.

luckythirteen13

waste of money. it would be cheaper and more effective to just buy a few gallons of race gas and mix it with the highest octane pump gas available in your area

SSKiller

Make sure it is UN-leaded race fuel.

my77stang

yeah you efi guys gotta watch out for lead - prolly throw your sensors into a tailspin

carbs ftw!!

and those octane boosters do nothing, i saw a test where you were lucky to gain 1 point

shaners90lxhatch

lead harms only the catalysts. It is actually good for your injectors given the gas you use is of good quality. That octane booster contains MMT. This is another known source of catalyst failure so the moral of the story is don't buy that stuff unless your enemy drives a car with cats. [:@]

94gtcoupe

lead hurts the cats AND o2 sensors other than that everything is fine, and if your only mixing the leaded fuel with nonleaded pump gas you'l be fine there won't be enough lead in it to hurt the sensors, this is all based off the fact of doing this only when the car is at the track

my77stang

avgas is low lead and cheaper than race fuel - you just have to blend it with premium pump gas cause its lacking an upper cylinder lubricant found in automotive gas

JD1969

Yea and the fact that it formulated to run at super high altitude and in engines the run relativly low RPM's. Using av-gas is an old 70's myth. Stay away from it if you want to get the right performance out of your engine.