Fuse Pull: Low Octane Fuel Fix For L99 and LS3. Reset Fuel Map for High Octane Fuel. - Page 200 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Bird · 03-22-2018, 11:03 PM

Did it this afternoon and noticed and immediate difference upon starting and driving the car tonight. I didn't even know I had a problem, just wanted to make sure since I bought the car used. Highly recommend doing this if you bought a used SS.

InFiD3ViL · 03-23-2018, 01:00 PM

Quote:

Originally Posted by Texas_RS

I actually managed to actually f*k this up. Pulled fuse #2- TCM(15A) instead of #5 that was right next to it... pulled completely out, and put it right back in 2 sec after I realized I pulled wrong one... anything to worry about? Cranked car and no codes, kind of worried about the dyno tune, etc now.

Nothing to worry about. The tune is still there and will work as expected. A tune cannot be cleared with a fuse pull.

Only thing is, you may notice some weird shifting and strange behavior from the transmission until it relearns/adapts. If I do this in my car, I will get some shift flaring on the 2/3 shift until relearn is done.

Blown1LE · 03-28-2018, 11:46 AM

If this is an issue do you get any kind of service engine light ? I have that service engine soon indicator now and the dealer filled the car

Dusk_2SS · 03-28-2018, 10:25 PM

No CELs from the fuse pulls. Need to run to the auto parts store and use their scanner and pull the codes.

dookie454 · 05-04-2018, 08:55 AM

If anybody has a scanner or one of those dash mount displays like DiabloSport or similar, you can monitor KNOCK LEARN. If it's near 0.00 then your good, 100% reading from High Octane table since this is what the fuse pull does.. resets KNOCK LEARN back to 0.00. If it increments towards 1.00 then your getting reduced power. 1.00 is 100% Low Octane table. 0.5 would be 50% High, 50% Low Octane table. If your tuner simply copied HIGH OCTANE to LOW OCTANE then you could be near 1.0 KNOCK LEARN and have no loss of power. But then again, your tuner could have simply made the KNOCK LEARN value stop incrementing, there are a few ways to do the same thing here.

This tends to be much more useful than just monitoring Knock Retard since a small blip of retard is normal here and there, but if you see 0.5 Knock learn then you know your down on power and you need to try better gas.

race24x · 05-07-2018, 09:43 PM

If you have a tune, do you need to do this fuse pull? I thought with a tune it would only run from the high table or they rewrite the tables both the same?

Dave_BlackOut · 05-09-2018, 10:12 AM

I read one reply related to DiabloSport and possibly missed the answer elsewhere. I know 87 octane was in it when I bought the car used. Do I need to fuse pull going to 93 octane OR can I just use my DiabloSport Intune i3 and push the 93 Octane Tune to my PCM, so no need to pull fuses?

Mr2Hard2See · 05-09-2018, 11:17 PM

Quote:

Originally Posted by race24x

If you have a tune, do you need to do this fuse pull? I thought with a tune it would only run from the high table or they rewrite the tables both the same?

Just pull them wait an hour or overnight then reinstall, it can't hurt. I just did the fuse thing last week and my auto runs harder for sure. 100% worth it

Pro-tuned · 05-10-2018, 03:55 AM

Quote:

Originally Posted by race24x

If you have a tune, do you need to do this fuse pull? I thought with a tune it would only run from the high table or they rewrite the tables both the same?

No need to pull fuses if the tune was executed properly for the parameters...

Overflow · 05-17-2018, 12:37 AM

Bought my SS used. Pulled the fuses before leaving for work... Can't wait to see the results.

Mr2Hard2See · 05-30-2018, 11:47 AM

Quote:

Originally Posted by Overflow

Bought my SS used. Pulled the fuses before leaving for work... Can't wait to see the results.

I'm quite surprised you haven't done this already

mountsalami · 07-14-2018, 05:13 PM

The fuse pull works and makes a big difference. I have had my 2010 LS3 M6 for 8 years now. Stared doing the fuse pull back in 2011. Have to do the pull every so often as the ECM seems to slowly revert back to the low side. I never put less than 91 in the tank. On high fuel map I can hit 100 mph in 3rd gear very quickly. Takes quite a bit longer when it reverts back to low map.

Any of you guys using Torco to boost fuel tank to 95-98+ octane ? Have not tried that yet.

Dusk_2SS · 07-14-2018, 11:55 PM

Not tried that yet, but thanks for the reminder as I need to go pull the fuse right now. It has been a little sluggish last couple trips and I always use 92 octane.

oldschoolkat · 07-15-2018, 05:05 PM

Best camaro tip ...just did it..last week...I run 93 only..felt like new again...bump

Sent from my SM-G960U using Tapatalk

03-28-2018, 10:25 PM	#2790
Dusk_2SS Drives: 2013 Dusk Special Edition 2SS/RS Join Date: May 2017 Location: Tacoma WA Posts: 125 View My Garage	No CELs from the fuse pulls. Need to run to the auto parts store and use their scanner and pull the codes. __________________

05-17-2018, 12:37 AM	#2796
Overflow Space Shuttle Aficionado Drives: 2016 Camaro 2SS Join Date: Jun 2010 Location: Tampa, FL Posts: 30,899 View My Garage	Bought my SS used. Pulled the fuses before leaving for work... Can't wait to see the results. __________________

07-14-2018, 11:55 PM	#2799
Dusk_2SS Drives: 2013 Dusk Special Edition 2SS/RS Join Date: May 2017 Location: Tacoma WA Posts: 125 View My Garage	Not tried that yet, but thanks for the reminder as I need to go pull the fuse right now. It has been a little sluggish last couple trips and I always use 92 octane. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2010 Camaro PCM Pin-out Description and Wire Colors (LS3 & L99)	raptor	Audio, Video, Bluetooth, Navigation, Radar, Electronics Forum	14	06-02-2020 12:51 PM
What kind of gas are you filling up with in your '10 Camaro?	JewelZ	5th Gen Camaro SS LS LT General Discussions	42	08-02-2009 09:31 AM
Check your Order here	bvonscott	Camaro Price \| Ordering \| Tracking \| Dealers Discussions	665	06-29-2009 01:00 PM

03-22-2018, 11:03 PM	#2787
Bird Drives: 2013 2SS 6sp manual Join Date: Feb 2018 Location: Florida Posts: 1	Did it this afternoon and noticed and immediate difference upon starting and driving the car tonight. I didn't even know I had a problem, just wanted to make sure since I bought the car used. Highly recommend doing this if you bought a used SS.

03-28-2018, 11:46 AM	#2789
Blown1LE Drives: 2015 Supercharged Camaro 1LE Join Date: Mar 2018 Location: Orlando FL Posts: 221	If this is an issue do you get any kind of service engine light ? I have that service engine soon indicator now and the dealer filled the car

05-04-2018, 08:55 AM	#2791
dookie454 Drives: 2010 Camaro 2SS LS3 Join Date: May 2012 Location: Michigan Posts: 143	If anybody has a scanner or one of those dash mount displays like DiabloSport or similar, you can monitor KNOCK LEARN. If it's near 0.00 then your good, 100% reading from High Octane table since this is what the fuse pull does.. resets KNOCK LEARN back to 0.00. If it increments towards 1.00 then your getting reduced power. 1.00 is 100% Low Octane table. 0.5 would be 50% High, 50% Low Octane table. If your tuner simply copied HIGH OCTANE to LOW OCTANE then you could be near 1.0 KNOCK LEARN and have no loss of power. But then again, your tuner could have simply made the KNOCK LEARN value stop incrementing, there are a few ways to do the same thing here. This tends to be much more useful than just monitoring Knock Retard since a small blip of retard is normal here and there, but if you see 0.5 Knock learn then you know your down on power and you need to try better gas.

05-07-2018, 09:43 PM	#2792
race24x Drives: 80 Z28 - 93 Z28 - 14 Camaro SS-RS Join Date: Sep 2016 Location: Fayette Maine Posts: 387	If you have a tune, do you need to do this fuse pull? I thought with a tune it would only run from the high table or they rewrite the tables both the same?

05-09-2018, 10:12 AM	#2793
Dave_BlackOut Drives: 2011 2SS/RS Join Date: Aug 2015 Location: Louisiana Posts: 4	I read one reply related to DiabloSport and possibly missed the answer elsewhere. I know 87 octane was in it when I bought the car used. Do I need to fuse pull going to 93 octane OR can I just use my DiabloSport Intune i3 and push the 93 Octane Tune to my PCM, so no need to pull fuses?

07-14-2018, 05:13 PM	#2798
mountsalami Drives: 2010 Camaro 2SS 6M Join Date: Aug 2012 Location: Iowa Posts: 98	The fuse pull works and makes a big difference. I have had my 2010 LS3 M6 for 8 years now. Stared doing the fuse pull back in 2011. Have to do the pull every so often as the ECM seems to slowly revert back to the low side. I never put less than 91 in the tank. On high fuel map I can hit 100 mph in 3rd gear very quickly. Takes quite a bit longer when it reverts back to low map. Any of you guys using Torco to boost fuel tank to 95-98+ octane ? Have not tried that yet.

07-15-2018, 05:05 PM	#2800
oldschoolkat Drives: 2013 SS Camaro Join Date: May 2016 Location: Chicagoland area Posts: 223	Best camaro tip ...just did it..last week...I run 93 only..felt like new again...bump Sent from my SM-G960U using Tapatalk