Well i found a gas station that sells 101 and 110 octain fuel.

I was wondering what would happen if i run 101 on a stock VQ.


Am I looking at any HP/TQ gains or am i just wasting more money on gas than its worth.

 

It won't do anything unless you're tuned for it.

Waste of money.

 

thanx

 

It "might" if the gas you are using is causing the knock count to get high enough for the ecu to start pulling timing. If yes, then you might get the car to perform at it's best. But you won't get more than that.

You won't have to fill the whole tank to get the benefits though. I'm not sure but maybe 1/4-1/2 tank might do it and fill the rest with 92?

 

Jeff, I see what you're saying buy on an N/A VQ it really don't do anything. It is not worth the money for 0 benefits you get without FI.

 

If he's on **** poor CA 91 octane and his particular engine is knock prone, it might help get his car BACK to good oem specs. Won't get him anything over that though. That's all I'm trying to say.

 

Naw im in the 402 (nebraska) and our premuim is 93 oct.

 

I'm in So. Cal. with 91 octane.
I put in 25% 110 with the regular 91 octane and it did wonders on the dyno. It was good for about 10HP. It really worked.

PS - Do not use 110 with any kind of catalytic converter. 110 has lead in it.
101 may or may not have lead in it. You will need to ask the vendor if it does.

 

PPS - if you use any leaded gas in your car, even with test pipes, use it sparingly.

Lead eventually fowls up your O2 sensors after a period of time.

 

If you can find a station that sell that "GOOD GAS" the pump should say
if it is leaded or not. I miss those days when you drove somewhere and
upon return your tailpipe tips were gray like they'd been sand blasted....!

 

Though I have not tried this myself, I believe it. Years back, SCC mag tested their 350Z with 91 and then a 91/100 (effectively a 96 octane mix) and they gained nearly 10whp with just the new fuel. As they increased octane past 96, the power gain remained the same. It was determined the ECU can adapt and take advantage of the increased octane to a point. The next time I go to the track, I'm going to do a 96 octane mix and see what happens.

 

youll probably mess up your ecu with race fuel, i wouldnt try suggesting it.

 

You won't mess anything up unless you use leaded race fuel (usually in 114+ octane fuels). Octane is simply a resistance to burn. If you use too much octane, the car will simply make less power.

 

oops i thought 110 had lead in it too.

 

From an engineering stand point, that makes complete sense. If you incorporated a knock sensor in your engine design, you would allow for a little bit of tolerance in how far you would let the computer advance or retard the timing beyond optimum setting but to protect the engine, you would set a hard limit on how much it could advanced. So that if the sensor somehow malfunctioned and it kept reporting "good", the computer couldn't advance the timing to like 50btdc.