Why do 2 different LS3's rev so differently? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

2011RSSS · 04-14-2011, 11:24 PM

Hi guys,

I am trying to buy my first Camaro. I have a preferred dealer, but the LS3 that he has sounds and feels sluggish compared to the same car at a different dealer. Are these engines likely to have different tunes from the factory? One seem to rev and decelerate slower than the other. We even parked 2 side by side and there is a noted enough difference between them. My dealer is going to have the service department run a diagnostic in the morning. Does anyone have any ideas why this would be?

Thanks

RiCorvette · 04-14-2011, 11:27 PM

Different gas? Premium vs Regular?
Just a wild guess

2011RSSS · 04-15-2011, 12:41 AM

Could it be that easy?

NovaDaddy · 04-15-2011, 12:56 AM

If the car has been run on regular it trips the computer knock sensor and tunes it back. Pull 5 and 20 fuse let sit a couple hours. make sure there is premium fuel in it. You should see a difference. there is a huge thread on here discussing this problem

2011RSSS · 04-15-2011, 01:16 AM

Thanks for that. I have been reading it. I can't believe I didn't think of gas as the culprit. I just assumed that a car with 50 miles on it wouldn't have trigger the low octane map, but I guess they are designed that way for a reason.

camaro5 · 04-15-2011, 02:21 AM

If you drop a can of 104 octane boost in the tank, you'll know for sure.

04-14-2011, 11:24 PM	#1
2011RSSS Drives: Dodge Mega Cab ( Hemi ) 2011 SS RS Join Date: Apr 2011 Location: Dallas Posts: 16	Why do 2 different LS3's rev so differently? Hi guys, I am trying to buy my first Camaro. I have a preferred dealer, but the LS3 that he has sounds and feels sluggish compared to the same car at a different dealer. Are these engines likely to have different tunes from the factory? One seem to rev and decelerate slower than the other. We even parked 2 side by side and there is a noted enough difference between them. My dealer is going to have the service department run a diagnostic in the morning. Does anyone have any ideas why this would be? Thanks

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04-14-2011, 11:27 PM	#2
RiCorvette Drives: 2017 Corvette Grand Sport 3LT Join Date: Oct 2010 Location: Center of the known Universe Posts: 863	Different gas? Premium vs Regular? Just a wild guess

04-15-2011, 12:41 AM	#3
2011RSSS Drives: Dodge Mega Cab ( Hemi ) 2011 SS RS Join Date: Apr 2011 Location: Dallas Posts: 16	Could it be that easy?

04-15-2011, 12:56 AM	#4
NovaDaddy Nova Daddy Drives: 2012 Cummins/1972 Nova 2 door coupe Join Date: Nov 2010 Location: Cochrane, Alberta Canada Posts: 155	If the car has been run on regular it trips the computer knock sensor and tunes it back. Pull 5 and 20 fuse let sit a couple hours. make sure there is premium fuel in it. You should see a difference. there is a huge thread on here discussing this problem

04-15-2011, 01:16 AM	#5
2011RSSS Drives: Dodge Mega Cab ( Hemi ) 2011 SS RS Join Date: Apr 2011 Location: Dallas Posts: 16	Thanks for that. I have been reading it. I can't believe I didn't think of gas as the culprit. I just assumed that a car with 50 miles on it wouldn't have trigger the low octane map, but I guess they are designed that way for a reason.

04-15-2011, 02:21 AM	#6
camaro5 Drives: X-15 Velocipede Join Date: Mar 2008 Location: SW Florida Posts: 4,630	If you drop a can of 104 octane boost in the tank, you'll know for sure.