Fuse Pull: Low Octane Fuel Fix For L99 and LS3. Reset Fuel Map for High Octane Fuel.

[mountsalami]

pirate. I have an LS3.
You'll know when it's time to start pulling the fuses when your car is up to operating temperature....and it still lags, like it's cold, when taking off from a stop, and you lose response and acceleration throughout all the gears. The car will feel "jerky".

You probably haven't had yours long enough for your pull to make much difference if it was on the high octane map already. When you notice a considerable loss of acceleration, just pull the fuses and it should reset itself back to high octane.

[thepirate]

Will do. Thanks for the advice mountsalami. Are there any negative effects from pulling the fuses at all? I'm assuming no, but it never hurts to ask.

[mountsalami]

Originally Posted by thepirate

Will do. Thanks for the advice mountsalami. Are there any negative effects from pulling the fuses at all? I'm assuming no, but it never hurts to ask.

None.
Just keep putting the high octane in her guts. You may have to do a pull ocaasionally. Trust me you'll feel when it's time.

Where I live in Iowa, I can only get 91 octane, BP brand, and I'm told it sucks.

I did the initial fuse pull about a month and a half ago.
A tank and a half later, I could tell I was losing just a little bit of power and did it again. It reset itself back to "normal".
So I am pretty sure the BP 91 isn't good enough quality fuel for this car.

Now at least I know what is going on when I lose power.
Since your car is new, I would have pulled the fuses right away myself just to make sure. (as you have done)

I am confident that I could get into anyones 5th Gen Camaro SS stock and tell if the fuses need to be pulled. It's that much of a difference between the low and high octane MAPS.

[almarlowe]

I dont understand why any one would put low octane fuel in a SS Camaro.

[thepirate]

Thanks for all the info. I can't wait to pull my fuses every other day

[hapisok]

guess an easy way to settle the debate aside from dyno pulls would be to compare log data between one tank and the next. what i would expect to see is timing being pulled with lower octane...in fact, i know it will pull timing to reduce knock which is caused by lower octane fuel, which in turn will reduce power output. higher octane is more resistant to knock which keeps the ECU from pulling timing and why there is more "power" from higher octane.

on a side note, when making the switch from 87 to 93 doing the fuse pull, i think the ECU still has to go through a slight relearn process before you see the full potential from the higher octane. its not that it resets the fuel tables, just flips the switch back to using the high octane table vs low octane table. but i would think the rest of the parameters that adjust real time would need to relearn to the high octane settings over a period of given time or distance. i could be wrong about that so feel free to correct me.

[hapisok]

Originally Posted by thepirate

Thanks for all the info. I can't wait to pull my fuses every other day

you could always wire up a switch to the console. flip off before you go in for the evening, flip it back on in the am.

[GhOsT_2SS]

Originally Posted by almarlowe

I dont understand why any one would put low octane fuel in a SS Camaro.

My thoughts exactly

You know what i do when I thinks its running a bit sluggish, is go out and find a nice curvey road and open it up and blow out all that city driving carbon build up. My BMW 335 i used to own before my Camaro had throttle position and air/furl adaptations. Basically if you drove like an old granny throttle response was a bit sluggish and of course gas mileage was better, then once you started pressing the gas more aggressively throttle response was quicker and power would increase.

So I drive the camaro the same way, not sure if the ecu is setup the same way but it works for me, oh and i put nothing but Shell 92 vpower in her. So basically drive it like you stole every once in a while, just dont get a ticket doing it and have quality radar detector on the glass.

[con10der]

I tried the Fuse pull last night on my LS3.....and this morning there was no doubt a noticeable difference. Although, here in New Mexico it is impossible to find fuel above 90 octane at the gas stations. So after running a few tanks of that crap I switched to AV100 fuel from the airport. So with the combination of the fuse pull to eliminate the program of the low octane history, and the upgrade to AV100...I have to say...VROOM VROOM...the beast is back!

[casperorr]

Hello Gang. I am new to the group. I recently purchased a 2010 Camaro SS, Transformer Edition, 6.2, automatic transmission etc. etc.
I have breifly looked through the forums, and "WOW", there is allot of info here. I am new to the Camaro Family. I have been a Mustang member for many years. But I am liking the Camaro scene more and more every day.

I tried the fuse pull by gasing up with 91 octane. We dont have 93 available where I live. So I used a Lucas octane boost to maybe help a little.

I pulled the #5 and #20 fuse and let the car sit overnight. I put the fuses back in the morning and went out to try it out. WOW, it did make a difference. BUT, I did notice that a couple of days later, on the same tank of gas, my car seemed to loose that extra performance that I had gained the first morning after the pull.

I was able to talk to another Camaro owner and he stated that this was normal. He said it would continue to do this unless I went in and had my car setup with an actual tune.

What do you all think?????

[PQ]

Originally Posted by casperorr

Hello Gang. I am new to the group. I recently purchased a 2010 Camaro SS, Transformer Edition, 6.2, automatic transmission etc. etc.
I have breifly looked through the forums, and "WOW", there is allot of info here. I am new to the Camaro Family. I have been a Mustang member for many years. But I am liking the Camaro scene more and more every day.

I tried the fuse pull by gasing up with 91 octane. We dont have 93 available where I live. So I used a Lucas octane boost to maybe help a little.

I pulled the #5 and #20 fuse and let the car sit overnight. I put the fuses back in the morning and went out to try it out. WOW, it did make a difference. BUT, I did notice that a couple of days later, on the same tank of gas, my car seemed to loose that extra performance that I had gained the first morning after the pull.

I was able to talk to another Camaro owner and he stated that this was normal. He said it would continue to do this unless I went in and had my car setup with an actual tune.

What do you all think?????

If you have some way to time your car then I'd time it (like I did in the beggining) and do it before and after you pull the fuses to see how much you are dropping.

Not sure if your car still has warranty left on the drive train (5 years is not up obviously but not sure on the 100k) but if you tune it you will lose your major failure warranty.

Could be the gas, could be the additive you are using, but if you time it you'll def. know how much performance you are losing.

[PQ]

Originally Posted by con10der

I tried the Fuse pull last night on my LS3.....and this morning there was no doubt a noticeable difference. Although, here in New Mexico it is impossible to find fuel above 90 octane at the gas stations. So after running a few tanks of that crap I switched to AV100 fuel from the airport. So with the combination of the fuse pull to eliminate the program of the low octane history, and the upgrade to AV100...I have to say...VROOM VROOM...the beast is back!

I'd consider dynoing it to make sure that gas is not going to mess with anything.

[bkscott]

I tried this today on my LS3. I may have gotten some bad gas over the last few weeks. I immediately noticed much better throttle response. How long it will last i don't know, but the car felt much stronger.

I think that clearing the memory improves the performance. Hopefully it will last a while.

[casperorr]

Thank you guys for the help.

casperorr