hello people I have a question for anybody who wants to respond.i was wondering has anyone put hi octane gas in your corvette,an if so did it hurt anything? my buddy put about 6 gallons in his 04 z06 an said he didn't have any problems.he also mixed it with 93 octane?

 

Well 3 gallons should be okay with 93 octane but 6 8 gallons you would benefit from a tune but you would always have to run race gas everytime you fill up about 6-8 10 gallons..

 

The car has two octane tables that it will use, And unless you have remapped the higher 93 octane table for race/av gas, the higher octane fuel is pretty must a waste since the car is not going to push the timing to use all of what the higher octane has to offer.

Now having said this, if all you have is 93 E-10, or av/race gas, the car will run better on the race/ AV gas. The difference here, the E-10 in the fuel that the car was never mapped to run correctly on the high octane table, the car may kick back down to using the low octane table instead (pulls timing)..

 

The 110 race fuel has lead in it and may harm the cats.

Higher octane fuel actually has less BTU's (energy) per unit than lower octane fuel so unless the car is tuned to take advantage of the higher octane, i.e. more timing and higher compression, you could actually see a decrease in power.

 

Lead in the gas will certainly damage the catalytic converters.

 

Even if you don't have cats it will kill the o2 sensors.

 

Hello,

Octane measures a fuels ability to not ignite and wait for the spark plug to ignite the fuel.

The higher the compression the higher the octane needed because compressed fuel ignites easier as compression increases.

As motor intake air increases you require higher octane rating to avoid spontaneous ignition before spark plug spark.

Your Corvette will not benefit from higher octane except maybe on an extremely warm day.

The octane rating of a fuel has nothing to do with the energy content of a fuel, it's only a measure of the fuels ability to wait for spark.

Hope this helps,

Douglas in Green Bay
Land Speed Racer E85 powered Hayabusa

 

But it has the word "RACING" in it....it must be faster...LOL

Octane rating is still an often misunderstood concept, and the oil companies do much to exploit this...selling lots of gasoline containing a higher rating than is needed.

 

Just curious, do you know Thomas Cronan? LSR also. Use to hang out in Maxton till they shut it down now mostly Ohio Mile

 

Hello,

I looked up Thomas Cronan and I have not met him. He looks like one heck of a good racer though.

Here's our last Ohio Mile run on Youtube in case you are interested.


Douglas in Green Bay

 

Higher octane allows for more timing. But unless tuned for it then you won't see the benefits. There's no harm to be had except for cats and O2 sensors but the car will run ok. Not worth the money unless you tune for it. Then will have to use that all the time.

 

I ran out of 93 gas at the track in my LS1 f-body and ran ran 100 octane fuel as that was what they had. I actually ran .1 slower the rest of day.

So no harm in running it unless your buddy likes paying more to go slower.