Fuse Pull: Low Octane Fuel Fix For L99 and LS3. Reset Fuel Map for High Octane Fuel. - Page 48 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

CPanther95 · 12-24-2009, 09:28 PM

So is there a definitive answer to why the thread title was changed? Is a battery disconnect necessary for an LS3 or will a fuse pull be sufficient? What settings are lost with a battery disconnect (radio, bluetooth, etc)?

PQ · 12-25-2009, 04:34 PM

Quote:

Originally Posted by GQ4Life

nope.. havent found spot where I can do a 0-60 run.. always car around.. plus the snow we got

Quote:

Originally Posted by Road_Warrior85

I have not gotten to time mine yet... but crazy stuff happened....

Get this

So like i said before... I went from getting "not as good as it should be" gas mileage..... down to "oh this is terrible" gas mileage

Well... i was driving back to hometown for xmas.... and i decided to try something odd...

I wanted to put cheap gas in my car, to force it into low octane mode... then go back to high octane gas.

I figured that way, if I wasnt already in low octane mode, i could make myself get there, then do fuse pull and know it worked.

Well, I had 1/4 of gas and hit the interstate. I reset the meter when i got on the road, and was getting about 15 mpg when i finally had to pull over for gas.

I got 2 gallons of 89 Octane, rather than the 93 that we are supposed to use.

Get this..... I got back on the interstate, reset the meter and was getting 22.5 mpg. Manual math agreed.

the 2 gallons got me almost as far as the 1/4 tank did.

to make it even more odd though,

once i had burnt those 2 gallons down and pulled into the station on fumes, i got 93 octane again. Then got back on the interstate and found myself getting 20 mpg even.

So i got better gas mileage on 89 octane than i did on 93????

Is this because it was on the low octane table? or what?

I dont know, I am just glad im not getting 14-16 anymore

Name: jmesserl-jmesserl-messerli.jpg
Views: 1202
Size: 32.2 KB

SSTony · 12-26-2009, 07:40 PM

so how long must both fuses be out? i just installed a cai and i really am not sure what gas the dealer put in but I have always put 93 in. Do you need the fuses out for the whole night? or just a few hrs? i dont see how time effects something that is on a fuse.

CPanther95 · 12-26-2009, 07:58 PM

Quote:

Originally Posted by SSTony

so how long must both fuses be out? i just installed a cai and i really am not sure what gas the dealer put in but I have always put 93 in. Do you need the fuses out for the whole night? or just a few hrs? i dont see how time effects something that is on a fuse.

If there is a capacitor in the circuit, time allows any remaining power to bleed off. Too short and the chip will never see a lack of power.

SSTony · 12-27-2009, 02:39 PM

i did this and it really didnt help much. I notcied an idle improvement. I just need a tune.

Lakotah · 12-29-2009, 09:02 PM

Ok, well pulled the fuses again. Gonna let the car sit til at least Saturday since I go back on duty Wed Night anyway. Gonna try it again Saturday afternoon.
Headin to the dealer next tuesday anyway so they can try and find out whats wrong with it.

CPanther95 · 12-30-2009, 11:13 AM

Reset my LS3 and there is a noticeable improvement.

Been waiting to get a couple tanks of 93 through the system since my dealer filled it with 89 when new (said car doesn't need premium, so no need to waste money on higher octane).

PQ · 01-02-2010, 02:09 PM

Quote:

Originally Posted by SSTony

so how long must both fuses be out? i just installed a cai and i really am not sure what gas the dealer put in but I have always put 93 in. Do you need the fuses out for the whole night? or just a few hrs? i dont see how time effects something that is on a fuse.

I let mine sit for about 3 hrs. Maybe I didn't have to but it worked. The 'butt dyno' didn't register as much as the full second improvement.

Darth_Emma · 01-02-2010, 02:18 PM

Quote:

Originally Posted by CPanther95

Reset my LS3 and there is a noticeable improvement.

Been waiting to get a couple tanks of 93 through the system since my dealer filled it with 89 when new (said car doesn't need premium, so no need to waste money on higher octane).

(I've been waiting for a chance to use that one!)

Lakotah · 01-02-2010, 11:47 PM

Ok Guys, heres the results:

Before Fuse pull

TC - 6.04
TC Off - 6.24
Comp Mode - 5.71

After Fuse Pull - Sat for almost 4 days with Fuses pulled.

TC - 6.03
TC Off - 6.25
Comp Mode - 5.72

I did several runs and all modes were within a couple tenths. Just wanted to make sure it wasn't me or the watch getting very different readings.

This seems slow compared to the other numbers I have seen posted by other members as well as GM having Camaros with no Issues.

JohnInSoCal · 01-03-2010, 12:27 AM

you listed your best time at 5.7, I think my best time when stock was around 5.5. Also how are you timing it, with a GPS device or accelerometer ?

Lakotah · 01-03-2010, 05:43 AM

With a handheld Stopwatch. That was the whole purpose of making several runs at each mode to determine consistency.

From what I have read, I should be around the 4.6-4.7 area as what GM touted in the mags and what most people are sayin on the boards for a normal situation. So 6+ seconds is way off and in the LS range.

Scott@Bjorn3D · 01-03-2010, 08:35 AM

Ok have you been getting your gas at the same gas station? What brand?

I actually had issues after GM fixed my car, the next time I went to the station I was using the car slowed down again. So I ran that tank out, went to a different station filled up and then did the fuse pull over night.

Car has been fast ever since and do not use the other station anymore.

Fourth Camaro · 01-03-2010, 11:01 AM

Quote:

Originally Posted by Scott@Bjorn3D

Ok have you been getting your gas at the same gas station? What brand?

I actually had issues after GM fixed my car, the next time I went to the station I was using the car slowed down again. So I ran that tank out, went to a different station filled up and then did the fuse pull over night.

Car has been fast ever since and do not use the other station anymore.

Drove my car last night for the first time in three weeks.
Outside temp was about three degrees.
No sign that the significant improvement I noticed after the dealer cleared memory for a air bag warning light fix has deteriorated.
It was a rocket last night.

I really think gasoline brands is an issue.
After I did the fuse pull in early September, I used Speedway high octane several times.
Since my dealer worked on the car a month ago, only BP and Shell.

I'm not saying, I'm just saying.

12-24-2009, 09:28 PM	#659
CPanther95 Drives: Rally Yellow 2SS/RS Join Date: Nov 2009 Location: Charlotte, NC Posts: 275	So is there a definitive answer to why the thread title was changed? Is a battery disconnect necessary for an LS3 or will a fuse pull be sufficient? What settings are lost with a battery disconnect (radio, bluetooth, etc)? __________________

12-26-2009, 07:40 PM	#661
SSTony Drives: SS Camaro Join Date: Jul 2009 Location: Piscataway NJ Posts: 1,782 View My Garage	so how long must both fuses be out? i just installed a cai and i really am not sure what gas the dealer put in but I have always put 93 in. Do you need the fuses out for the whole night? or just a few hrs? i dont see how time effects something that is on a fuse. __________________

12-27-2009, 02:39 PM	#663
SSTony Drives: SS Camaro Join Date: Jul 2009 Location: Piscataway NJ Posts: 1,782 View My Garage	i did this and it really didnt help much. I notcied an idle improvement. I just need a tune. __________________

12-30-2009, 11:13 AM	#665
CPanther95 Drives: Rally Yellow 2SS/RS Join Date: Nov 2009 Location: Charlotte, NC Posts: 275	Reset my LS3 and there is a noticeable improvement. Been waiting to get a couple tanks of 93 through the system since my dealer filled it with 89 when new (said car doesn't need premium, so no need to waste money on higher 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 01:51 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 10:31 AM
Check your Order here	bvonscott	Camaro Price \| Ordering \| Tracking \| Dealers Discussions	665	06-29-2009 02:00 PM

12-29-2009, 09:02 PM	#664
Lakotah Drives: 2015 1LE Charcoal Grey Join Date: Dec 2009 Location: Texas Posts: 72	Ok, well pulled the fuses again. Gonna let the car sit til at least Saturday since I go back on duty Wed Night anyway. Gonna try it again Saturday afternoon. Headin to the dealer next tuesday anyway so they can try and find out whats wrong with it.

01-02-2010, 11:47 PM	#668
Lakotah Drives: 2015 1LE Charcoal Grey Join Date: Dec 2009 Location: Texas Posts: 72	Ok Guys, heres the results: Before Fuse pull TC - 6.04 TC Off - 6.24 Comp Mode - 5.71 After Fuse Pull - Sat for almost 4 days with Fuses pulled. TC - 6.03 TC Off - 6.25 Comp Mode - 5.72 I did several runs and all modes were within a couple tenths. Just wanted to make sure it wasn't me or the watch getting very different readings. This seems slow compared to the other numbers I have seen posted by other members as well as GM having Camaros with no Issues.

01-03-2010, 12:27 AM	#669
JohnInSoCal Drives: RJT L99 500HP Join Date: Aug 2009 Location: SoCal Posts: 535	you listed your best time at 5.7, I think my best time when stock was around 5.5. Also how are you timing it, with a GPS device or accelerometer ?

01-03-2010, 05:43 AM	#670
Lakotah Drives: 2015 1LE Charcoal Grey Join Date: Dec 2009 Location: Texas Posts: 72	With a handheld Stopwatch. That was the whole purpose of making several runs at each mode to determine consistency. From what I have read, I should be around the 4.6-4.7 area as what GM touted in the mags and what most people are sayin on the boards for a normal situation. So 6+ seconds is way off and in the LS range.

01-03-2010, 08:35 AM	#671
Scott@Bjorn3D Drives: Kami, 2013 2SS LS3 Luvin Join Date: Oct 2008 Location: Eufaula, Alabama Posts: 6,427	Ok have you been getting your gas at the same gas station? What brand? I actually had issues after GM fixed my car, the next time I went to the station I was using the car slowed down again. So I ran that tank out, went to a different station filled up and then did the fuse pull over night. Car has been fast ever since and do not use the other station anymore.