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Old 11-24-2013, 09:33 PM   #2549
Fourth Camaro
 
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Quote:
Originally Posted by SeaWolfLestat View Post
I started a thread about my cars lame performance
http://www.camaro5.com/forums/showthread.php?t=329021
and the fuse pull suggestion from SinsterEcho was quick and timely.
I shoullda read this sticky 1st.
The fuse pull DEFINATELY worked for me. If your Gen 5 lags.. DO THIS!

It is a quick, free, change that makes a WORLD of difference in how my car drives.
I am 100% convinced that the reason my car has been reverting back to the lower octane table was that I was putting only 2-3 gallons of premium in my car by using the same hose that dispenses lower octanes. I don't put a ton of miles on my car.
Ever since I started filling up each time, my car has been performing properly.

It was making me crazy that my 400 hp car wasn't always the same rocket that my '97 Z28 was.
My car has been great for over 3 months now. No comparison. Just awesome.
So many Camaro SS sitting on used car lots.

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Old 12-08-2013, 06:15 PM   #2550
ckaram

 
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Drives: 2011 2SS RS, 1968 ragtop
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Noticed my 2011 LS3 was sucking more fuel the past month, despite less hi-po driving it being winter and all. I've had my winter tires on for the past month as well. I've never put less than the recommended octane in the car.

So I really didn't notice any less performance since I'm driving it carefully with less spirited blasts around town. But I'm getting 2 MPG less than usual. I blew it off for a while then started re-setting the MPG including on the highway. Definitely 2+ MPG less than before. Bad gas possibly?

For grins I pulled the fuses including number 10 in the trunk. Under hood fuses for close to 4 hours, trunk 30 minutes. Buttoned it all back up and took a cruise for about 15 miles with a few errand stops. Happy to report MPG is back where it should be. Coincidence? Don't know but I'll take it.

And MPG problem identified not just by the car indicator but also manual calcs and more frequent fill-ups. I'll continue to monitor it.
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1968 Camaro convertible, LS1 & T56, Texas Speed 228R cam, 3.73 posi, 17" Torque Thrusts
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Old 12-16-2013, 10:14 AM   #2551
wakespeak

 
Drives: 2013 2SS LS3/NPP
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Just reporting back....

After 16K miles my conclusion is that, for the '13 MY at least, the ECU constantly goes back and forth between premium and regular fuel maps. My view on the cause is crankcase gases routed back into the intake by the PCV system. The gases can cause pinging regardless of the fuel octane.

After installing a catch can the car is maintaining the noticeably more peppy premium map for me. No audible pinging. Idle has improved as well, engine smoother.
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Old 12-23-2013, 12:59 PM   #2552
BIGJV
 
Drives: 2013 Camaro 2SS RS 1LE
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I tried this on my 1LE that I imported into New Zealand. I was unsure what fuel was in the tank so I drove the tank dry and filled with 98 Octane. This fuel is readily available over here and is only a few cents more. After the fuse pull I took the car for a ride, after it warmed up I launched a few times and to my surprise I could feel it pull harder. I wondered if it was just a placebo effect but suddenly on one of my launches the car fish tailed and traction control kicked in...... The fuel pull works, not sure about long term but for the moment running 98 octane it's a different car
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Old 12-29-2013, 04:52 PM   #2553
VQ35DE
 
Drives: 2013 / 2SS / RS / L99
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Pulled all 3 (trunk also) fuses today.
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Old 01-01-2014, 03:33 PM   #2554
Zachreed89
 
Drives: 2010 camaro SS
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I'm sure the dealership put it 87 oct when i bought my 2010 camaro ss.. simply because they didn't know or didn't want to pay the pennies more for it.. either way the guy who sold me the car is a dumbass.. how can we check to see if this worked.. it doesn't feel any different.. i mean it kinda does but I'm not sure if its just in my head.. can the dealership hook it up and check or is this something i need to take to a preformance shot that does tuning to check? new to camaros and i just wanna make sure my baby is running healthy. also the person who owned the car before me I'm sure also put 87 oct in it... just an assumption by the way the car was when i got it.. spent a lot of man hours cleaning and getting her in perfect order. thanks in advance
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Old 01-03-2014, 09:50 AM   #2555
Matt Rogers
 
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I would like to confirm this works on my 2014 LS3 as well. The dealership told me they only use 87 except in their Corvettes and ZL1, etc. so after speaking to a fellow member of WW5GCC, I decided to try the fuse pull. I did not pull any battery or constant power connections.

Afterward I noticed that 1st gear was MUCH smoother both during acceleration and deceleration and even between shifting from 1st to 2nd (TR6060).

I also can report after a couple days of Puget Sound traffic I have even increased my (overall) fuel mileage so far by 0.2 MPG. I bought the car Dec 12, 2013 and haven't done any mileage calculation resets or anything at all.

Even if this is a myth, hell I'd be happy if it's my subconscious just working better haha but I seriously can tell there's a difference. Can't comment about power, as that wasn't really much of what I was after but instead because I only use Premium Octane fuel I want the mappings correct.
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Old 02-17-2014, 12:36 AM   #2556
Rjizzle10
 
Drives: '13 Hot Wheels SS
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I pulled the fuses let em sit for like a day and a half and the put em back in immediately started it up. Rough start, and drove away, the shifts were stalling at like 5k rpms when I stepped on it and locked up. I will report back after it sits for awhile with the fuses in it.
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Old 02-17-2014, 04:24 AM   #2557
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Quote:
Originally Posted by Rjizzle10 View Post
I pulled the fuses let em sit for like a day and a half and the put em back in immediately started it up. Rough start, and drove away, the shifts were stalling at like 5k rpms when I stepped on it and locked up. I will report back after it sits for awhile with the fuses in it.
On a L99, I always pulled the fuses over night. Put them in the next morning, start car let it idle for 5 minutes to figure out air fuel trims for the current temps of the outside air then off I would go.

My LS3 I do the exact same way and works great. I did do it once on my L99 with just putting fuses in starting up and taking off, car acted sick for about 40 miles. A GM guy told me the car has to learn air breathing again if you pull the fuses and I did not let it sit and do that and it had to learn it with different air flow speeds over the MAF since I was driving it.
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Old 02-17-2014, 04:18 PM   #2558
Rjizzle10
 
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It seems like it's acting better now but I don't think any difference in performance
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Old 02-19-2014, 07:27 AM   #2559
Fourth Camaro
 
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Quote:
Originally Posted by Fourth Camaro View Post
I am 100% convinced that the reason my car has been reverting back to the lower octane table was that I was putting only 2-3 gallons of premium in my car by using the same hose that dispenses lower octanes. I don't put a ton of miles on my car.
Ever since I started filling up each time, my car has been performing properly.

It was making me crazy that my 400 hp car wasn't always the same rocket that my '97 Z28 was.
My car has been great for over 3 months now. No comparison. Just awesome.
So many Camaro SS sitting on used car lots.

I just finished buying a used CR-V for work, so I've been on cars.com a ton lately.
I wonder if Chevrolet is aware of what a potential problem this has been for the future of these cars.
There are about 4,000 used 2010 and 2011 Camaros listed.
What is staggering is when you review a few free car fax reports and note the time periods that many people are bailing on the car.
Two months, eight months. A very bad pattern emerges.
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Old 02-21-2014, 12:19 PM   #2560
wakespeak

 
Drives: 2013 2SS LS3/NPP
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Another update:

I posted a while back that filling up an empty tank was considered a "significant fueling event" and that would reset the ECU maps. I found it on another Chevy site.

Recently I got what must have been some bad fuel. The car clearly moved to the regular map (I heard some pinging prior). It remained there for the duration of the tank. I waited till empty, filled up with premium, and boom, back in premium map with no fuse pull. I think this is true for the '12-'13 cars.
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Old 03-05-2014, 04:07 PM   #2561
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Read out my ECU on 2014 2SS and found already 70 misfires on cylinder 1 and the others between 2 and 10 another one had 48 in the memory. (might be wrong values because otherwise I would have a prob) Itīs my second tank of 91+ Gas with 60% level, find nothing in the ECU what tells me the octane settings (just started with this ODB2) maybe I need a pro tool.

Will drive a little and log the data and compare how often that happens.

Can that be a sign for the wrong fuel Map/Table?

I will try this fuse pull, it doesn't hurt. Letīs see
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Last edited by TigerFA; 03-08-2014 at 06:35 PM.
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Old 03-08-2014, 10:14 AM   #2562
maddoggyusa

 
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There is way too much opinion and speculation on this thread.

When you pull the fuse or reset the obd2 system, the car resets the short term and long term fuel trim values. For this reason, it will run differently while it re-learns. It may appear to run super or poorly, but over time will adjust to ideal air/fuel combustion and fuel economy.

So even if the dealer put in 87, it will adjust to 94 over time.
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