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

[PQ]

Originally Posted by lsaterz28

Would like the service bulletin # so i can look that up, we have several Hi-Pro 5th gens in our group. At this time none are aware of a bulletin, Maybe we are wrong give me the info if you are right i will tell you so. till then we will stand with current info.

Zod..... is that you?

TSB: #PIP4728: Higher Than Expected 0-60 MPH (97 KPH) Acceleration Time - (Nov 4, 2009)


Subject: Higher Than Expected 0-60 MPH (97 KPH) Acceleration Time


Models: 2010 Chevrolet Camaro

with V8 Active Fuel Management Engine (RPO L99)

and 6 Speed Automatic Transmission (RPO MYC)




--------------------------------------------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Some customers may complain of higher than expected 0-60 MPH (97 KPH) acceleration times when hot ambient temperatures are present. In some cases, they may report 0-60 times around 7 seconds.

This may be the result of the vehicle being filled with regular grade unleaded gasoline at one time. If the vehicle has been filled with regular unleaded gasoline, the ECM may be compensating for the lower octane by retarding the ignition timing during certain driving conditions.

Recommendation/Instructions:
If SI diagnosis does not isolate the cause of this concern, perform the suggestions below if the customer wants the best performance from their Camaro:

In an area where it is legal to do so, take a snapshot of a 0-60 WOT acceleration event and compare the vehicle speed parameter to the snapshot timer to determine the 0-60 MPH time.
Determine what gasoline octane the customer has been filling the vehicle with.
• 2a. If they have never used anything but premium unleaded with a posted octane of 93 or higher, go to step 3.

• 2b. If they occasionally use regular or mid-grade gasoline, the gasoline must be removed from the tank and it must be refilled with premium fuel of 93 octane or greater. This can be done by advising the customer to switch to premium fuel of 93 octane or greater and returning after a few tanks of premium fuel have been consumed. Or, if immediate results are necessary, drain the fuel tank, refill it with premium fuel of 93 octane or greater, and drive the vehicle at least 15 miles to purge the old fuel out of the fuel rail and lines.

Reprogram the ECM with the latest TIS2Web calibrations to reset the ECM adapts. Normally this reset can also be accomplished by pulling the 2 main ECM fuses (F13R and F20U) shown in the ECM Power, Ground, MIL, and Serial Data Schematic (SI Document # 2209065).
In an area where it is legal to do so, take another snapshot of a 0-60 WOT acceleration event and compare it to the original snapshot to determine if the 0-60 MPH time has increased. If an increase is noted, advise the customer that they should only use premium unleaded gasoline with a posted octane rating of 93 or higher to continue getting the best performance from their Camaro. This is outlined on page 8-45 of the owner's manual. GM Connect Message G_0000037144 was also sent out on 9/2/2009 about filling stock units with premium gasoline.

[lsaterz28]

no

[PQ]

Originally Posted by lsaterz28

no

[lsaterz28]

I see your bulletin # pip4728 Dated Nov 2009 this makes it correct for 2010 Camaro you are right for that year of Camaro.
What does this have to do with 2011,2012,or 2013?

[PQ]

Originally Posted by lsaterz28

I see your bulletin # pip4728 Dated Nov 2009 this makes it correct for 2010 Camaro you are right for that year of Camaro.
What does this have to do with 2011,2012,or 2013?

I never said it did.

However, I took that from a post that is a few years old. For all I know they added subsequent years.

Maybe they addressed the problem on the line but there WAS a problem.

I'm so far beyond modified now it doesn't matter for me But back in 2009 when my car was a second slower than it should have been it was pissing me off.

[merlin803]

"• 2b. If they occasionally use regular or mid-grade gasoline, the gasoline must be removed from the tank and it must be refilled with premium fuel of 93 octane or greater."

I had always read that mid-grade 91 octane would not lower the higher performance table but this appears to say otherwise.

[lsaterz28]

The troll is back
Had to travel 65 miles for some last minute details for 2 5th gen Camaros out of our group headed to Lost Wages Nv. Entered in SEMA show. After SEMA both of these cars are entered in The Optima Battery Speed Challange. A total of only 70 cars in the USA get an invite. These cars are tuned by the our Friend the tuner. WE know what we are doing. these cars are from IN. This shop does mods for Chev dealers on new Camaros and sold in their showroons. The dealers have never brought this up as not all of the Camaros are V8, no problems.
I will still go un named for the business, but a very well know GM auto mag has done a full shoot on the Shop car many of you will have a copy in your mail box by Christmas

[RyanBoles]

The troll is back
Had to travel 65 miles for some last minute details for 2 5th gen Camaros out of our group headed to Lost Wages Nv. Entered in SEMA show. After SEMA both of these cars are entered in The Optima Battery Speed Challange. A total of only 70 cars in the USA get an invite. These cars are tuned by the our Friend the tuner. WE know what we are doing. these cars are from IN. This shop does mods for Chev dealers on new Camaros and sold in their showroons. The dealers have never brought this up as not all of the Camaros are V8, no problems.
I will still go un named for the business, but a very well know GM auto mag has done a full shoot on the Shop car many of you will have a copy in your mail box by Christmas

Cool story bro...

[lsaterz28]

No BS from this guy

[lsaterz28]

To add
Every one on this forum who owns a 5th Gen are looking to correct what they may feel is a problem. They will spend TIME & Money or both. The shop does not make money by giving mis information. You can not build a business long term repeat. unless you are stright up Honest.
I do not own a piece of GM but i know many GM corp personal, they have busted butt to give all of us a very much trouble free 5th Gen Camaro. In spite of the input from our Pres. Remember to vote 11/6/2012

[BSR-1]

Am I the only one who's really confused about what the argument is at this point?

[MYDLIFECRISIS]

Originally Posted by BSR-1

Am I the only one who's really confused about what the argument is at this point?

No, I'm confused too. I read a while back that you pull #5 and #20 under the hood. I did, and she woke up!

I'm lost in this thread now.

[RyanBoles]

Somewhere someone said to pull the ECM fuse in the trunk. I may be wrong but i think it was said that only one of the fuses under the hood and the ECM fuse in the trunk did the trick not just the two under the hood. Now I have no idea what lsaterz28 is talking about and he may be a Russian spy.

[BSR-1]

Originally Posted by RyanBoles

Now I have no idea what lsaterz28 is talking about and he may be a Russian spy.

That's the confusion that I'm talking about!