Gaining Horsepower By Pulling A Couple Fuses!

[JLightning77]

Those two comments/bickering/whatever you call it above this post was some funny sh**!! Sounds like high school all over again.....anyway this is a great post!! Thank you for the info, just bought my car from a dealer and I know a girl owned my car because her phone is still programmed into my blue tooth system lol. Im pretty sure she didn't pay attention to what fuel she put in this beast so I am definitely gonna do this! Thank you!

[2014ssblk]

Jlighthing Roseville mi?

[Apex Motorsports]

Originally Posted by JLightning77

Thank you for the info, just bought my car from a dealer and I know a girl owned my car because her phone is still programmed into my blue tooth system lol.

Oh, the prank opportunities.

[JLightning77]

Originally Posted by 2014ssblk

Jlighthing Roseville mi?

No sir, Roseville California, soon to be Filthy Mo though (Modesto! BOO!). I grew up there and moved to Sacramento/Roseville area when I was in my early 20s now I have a new home opportunity that I cant pass up and have to move back there. "TMI" I know lol..

[JLightning77]

Originally Posted by Apex Motorsports

Oh, the prank opportunities.

Yeah I know lol!!!

[Botrod]

Going to try this next time I fill up. I got the car with 6000 miles on it and I had planned to run 93 only. The GF filled it up the other day and I'm certain she only used 87. Who knows what the guy before me used. It feels a little sluggish at take off to me though.

Since I still have some fuel left in the tank could I fill with 93 and add some octane booster to offset it? ...or would the extra octane make it want the higher all the time?

[Apex Motorsports]

Originally Posted by Botrod

Going to try this next time I fill up. I got the car with 6000 miles on it and I had planned to run 93 only. The GF filled it up the other day and I'm certain she only used 87. Who knows what the guy before me used. It feels a little sluggish at take off to me though.

Since I still have some fuel left in the tank could I fill with 93 and add some octane booster to offset it? ...or would the extra octane make it want the higher all the time?

You could do that but I would run a couple tanks on 93 through before doing the fuse pull just to thorough.

[SquawkVFR]

I did this last week and unleashed a great deal of noticible power. It even sounds better. For lack of a better term it sounds "healthier" with the CO's open or closed.

[Apex Motorsports]

Originally Posted by SquawkVFR

I did this last week and unleashed a great deal of noticible power. It even sounds better. For lack of a better term it sounds "healthier" with the CO's open or closed.

Can't beat that.

[Red2014SS]

I did it last week too. Afterwards, it was like a different car. I have only run one tank of premium through it though, so I plan on doing it again just to make sure. It's a great trick and many thanks to the OP.

[Apex Motorsports]

Originally Posted by Red2014SS

I did it last week too. Afterwards, it was like a different car. I have only run one tank of premium through it though, so I plan on doing it again just to make sure. It's a great trick and many thanks to the OP.

[EDFHOBBIES]

Originally Posted by Apex Motorsports

If you are new to owning a 2010+ Camaro SS equipped with the L99 or LS3 V8 engine, then you may not be aware of a simple trick that could unleash a few extra horsepower.

There are two specific spark timing tables housed in the memory of the vehicle’s Electronic Control Module (ECM). One is used for cars running high octane fuel and the other for when the vehicle is using low octane fuels. Whenever you drive the vehicle, the ECM is constantly making decisions based on the data it receives from all of the sensors in the engine and exhaust.

The problem:

It seems that if someone puts a low octane fuel into the tank, the vehicle can’t recover from the low octane table. Once in the low octane table the car will continue to use that information even if you are now using a higher octane fuel. Of course the side effect of this is sluggish performance, and we don’t really need to explain the benefits of running a higher octane fuel in a performance application. If you recently purchased your Camaro you wouldn’t be incorrect in thinking that it isn’t uncommon that at some point the car was filled with a less potent gasoline, especially if it came from a used car dealership or from an owner who was uninformed of this problem and wanted to save a few bucks at the pump. The LTFT’s are, unfortunately, a part of the car’s non-volatile memory. That means the information is stored there, and doesn’t reset when the vehicle is turned off.

However, there is a way around this problem. Although the spark tables are part of the non-volatile memory and cannot be removed, they can be reset. A simple solution is to remove a couple of fuses from the fuse block in the engine compartment. Pulling the fuses will allow your Camaro’s ECM to reset itself to the high octane table. If you are running high octane fuel then it remain in the high table until the ECM again detects a low octane fuel.

The fix:

First, make sure the car is empty of the low octane fuel. Run the tank down low and refuel with high octane. You might consider running a tank or two through before attempting the fuse pull. Once you have better gasoline in the system, locate the two fuses shown in the diagram below. They are in the fuse box located on the passenger side of the vehicle’s engine bay. The fuses are in position #5 and #20. Remove each of these 15 amp fuses and allow the car to sit for a period of at least a few hours. There is a small, grey fuse pulling tool located on the fuse panel (In the diagram below it would be in the lower right corner area). That should make the pulling of the fuses easier. If possible, remove the fuses and allow the car to sit overnight. Once they have been out for several hours, replace the fuses. When started, the car will attempt to use the high octane fuel trims first, and if you keep high octane fuel in the car it should remain on the higher table permanently. Of course, lowered octane fuel in the tank means repeating the process.

Would a reflash of the same program do the same?

[Apex Motorsports]

Originally Posted by EDFHOBBIES

Would a reflash of the same program do the same?

You shouldn't have to worry about it. Tuning should take care of it.

[Sigelitest]

is this still a issue with the 2014?