Active Fuel Managment L99 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Rocky918 · 09-16-2009, 05:49 PM

I believe the L99 does have active fuel managment where it only uses 4 cylinders when your not really pushing hte car to save gas, but when you get on it, it switches to 8 cylinders... correct?

does this only apply in D mode? or does it also apply when in S mode or even M1-6... i ask becuase in D mode, sometimes ill floor it going 40mph, and the car doesnt take off that fast, othertimes i will floor it and it will shoot off like a rocket... how do u really get it from one to the other?

GhostRider322 · 09-16-2009, 06:43 PM

It does have ATF in both D and M. Once you use paddle shifter the ATF does not cut in until you shift back to D. I do notice a hesitation unless you mash the pedal firmly. The best method I have found is to drive in the M mode and when you need the speed tap paddle shift down a gear (or 2) and hit the gas.

levi1922 · 09-16-2009, 07:24 PM

AFM seems kinda annoying, i thought it was designed so that you dont notice at all?

Rocky918 · 09-16-2009, 08:05 PM

Quote:

Originally Posted by levi1922

AFM seems kinda annoying, i thought it was designed so that you dont notice at all?

Yea its definatly annoying in the sense that sometimes you will floor it and have to wait like 2-3 seconds before you go anywhere in D or even S ...

however i think it is still great because it definatly saves a lot of gas over always using 8 cylinders... and it can be over ridden if you use M mode 1-6

levi1922 · 09-16-2009, 08:38 PM

Quote:

Originally Posted by Rocky918

Yea its definatly annoying in the sense that sometimes you will floor it and have to wait like 2-3 seconds before you go anywhere in D or even S ...

however i think it is still great because it definatly saves a lot of gas over always using 8 cylinders... and it can be over ridden if you use M mode 1-6

not to mention it saved us from the gas guzzler tax

wullger · 09-16-2009, 10:00 PM

One of two things will probably happen: you'll get used to it, or it will smooth out after break-in.

Augie1978 · 09-16-2009, 10:02 PM

I wish the car was programed where it didnt kick in when you have it in sports mode. You would think that that would make sense.

levi1922 · 09-16-2009, 10:05 PM

Quote:

Originally Posted by Augie1978

I wish the car was programed where it didnt kick in when you have it in sports mode. You would think that that would make sense.

i agree.

its kinda an oxymoron that it cuts power in sport mode when cruising.

Kris@BMCPerformance · 09-16-2009, 10:14 PM

Quote:

Originally Posted by Augie1978

I wish the car was programed where it didnt kick in when you have it in sports mode. You would think that that would make sense.

You can disable it with the Diablo Predator, in addition to much firmer shifts and improved Hp/TQ.

bgbadss · 09-16-2009, 10:14 PM

Quote:

Originally Posted by Augie1978

I wish the car was programed where it didnt kick in when you have it in sports mode. You would think that that would make sense.

It just plain sucks at low speeds, the car shudders and the exhaust sounds nasty. Explains why the mufflers are so big so you won't hear the rackett produced in the pipes. My buddy put an exhaust on his L99 (AND IT SOUNDS AWFUL WHEN IN 4 CYL MODE) be fore warned, you won't like it. So the question is can it be turned off with a tune?????

Augie1978 · 09-16-2009, 10:56 PM

I will be installing an SLP LM II exhaust this weekend, if I cant tolerate the AFM I will get a tune to get rid of it.

ibznu2010 · 09-16-2009, 11:00 PM

Been telling everyone this for weeks. Put headers on L-99 & had to take them off because of noise.

HeavyD · 09-17-2009, 12:09 AM

I can't believe they were so liberal with it coming on. I would think it would have to be in D and in cruise control too. Any other time it should be off.

thebrainhart · 09-17-2009, 01:08 AM

I have shortie headers, and just had my mufflers chopped off 2 days ago. I do not mind the sound at all. Sure, it sounds a little wierd at times when in V4 mode, but not bad.

And AFM does come on even when your in manual mode. I didn't think it did, until yesterday I was in a high gear, going low speeds, and sure enough, it did come on.

I believe you can customize the AFM with a tune to make it only come on at certain speeds, ie 60+

09-16-2009, 05:49 PM	#1
Rocky918 Drives: SS for Super Sexy! Join Date: May 2009 Location: South Florida Posts: 746	Active Fuel Managment L99 I believe the L99 does have active fuel managment where it only uses 4 cylinders when your not really pushing hte car to save gas, but when you get on it, it switches to 8 cylinders... correct? does this only apply in D mode? or does it also apply when in S mode or even M1-6... i ask becuase in D mode, sometimes ill floor it going 40mph, and the car doesnt take off that fast, othertimes i will floor it and it will shoot off like a rocket... how do u really get it from one to the other? __________________ - Life is to short to let it pass you by

09-16-2009, 07:24 PM	#3
levi1922 Drives: 2LT RS CGM Join Date: Apr 2009 Location: Texas Posts: 1,378	AFM seems kinda annoying, i thought it was designed so that you dont notice at all? __________________

09-16-2009, 10:00 PM	#6
wullger Supercharged Drives: 2010 Camaro 2SS/RS Join Date: Apr 2009 Location: Tyler, Texas Posts: 1,575 View My Garage	One of two things will probably happen: you'll get used to it, or it will smooth out after break-in. __________________ 2SS/RS IBM A6, White Rallies Ordered: 4/30/09 Delivered: 8/18/09 Appearance Mods: Heritage Grille, ZL1 Replica Wheels Performance Mods: Flowmaster ARH Cat-Back Exhaust, ADM CAI, ADM L99-LS3 Conversion, ADM LSA Supercharger Kit, Lingenfelter GT9 Cam, Stainless Power Headers, Detroit Speed Sway Bars, ZL1 Fuel Pump 581 rwhp/535 lb/ft tq

09-16-2009, 10:02 PM	#7
Augie1978 Drives: 2011 2SS RS Vert Join Date: May 2009 Location: Central Illinois Posts: 621	I wish the car was programed where it didnt kick in when you have it in sports mode. You would think that that would make sense. __________________ 2SS RS, Triple Black Vert, Manual, Hurst Shifter. American Racing Headers, Roto-Fab CAI

09-16-2009, 10:56 PM	#11
Augie1978 Drives: 2011 2SS RS Vert Join Date: May 2009 Location: Central Illinois Posts: 621	I will be installing an SLP LM II exhaust this weekend, if I cant tolerate the AFM I will get a tune to get rid of it. __________________ 2SS RS, Triple Black Vert, Manual, Hurst Shifter. American Racing Headers, Roto-Fab CAI

09-16-2009, 06:43 PM	#2
GhostRider322 Drives: 2010 SIM 2SS/RS Join Date: Jul 2009 Location: Florida Posts: 4	It does have ATF in both D and M. Once you use paddle shifter the ATF does not cut in until you shift back to D. I do notice a hesitation unless you mash the pedal firmly. The best method I have found is to drive in the M mode and when you need the speed tap paddle shift down a gear (or 2) and hit the gas.

09-16-2009, 11:00 PM	#12
ibznu2010 Drives: 2010 blk 2SS RS polished wheel Join Date: Mar 2009 Location: Sylvester Georgia Posts: 158	muffler sounds Been telling everyone this for weeks. Put headers on L-99 & had to take them off because of noise.

09-17-2009, 12:09 AM	#13
HeavyD Drives: 1SSRS RY L99 Join Date: Aug 2009 Location: Ontario Posts: 1,323	I can't believe they were so liberal with it coming on. I would think it would have to be in D and in cruise control too. Any other time it should be off.

09-17-2009, 01:08 AM	#14
thebrainhart Drives: '10 Camaro 2SS/RS CGM LS3 A6 Join Date: May 2009 Location: Bountiful, UT Posts: 683	I have shortie headers, and just had my mufflers chopped off 2 days ago. I do not mind the sound at all. Sure, it sounds a little wierd at times when in V4 mode, but not bad. And AFM does come on even when your in manual mode. I didn't think it did, until yesterday I was in a high gear, going low speeds, and sure enough, it did come on. I believe you can customize the AFM with a tune to make it only come on at certain speeds, ie 60+ __________________ - 2010 Camaro 2SS/RS CGM LS3 A6 "Lurch" - FLYNGSS - Some ProCharger, Alky, CompCams, Brian Tooley, Holley, Livernois, K&N, Ridetech, DSS, Kooks, JDP Motorsports, Pfadt, BMR, Prothane, Weld, M&H, Mickey Thompson, RKSport, Elite, Garys, Defenderworx, Anvil, etc.

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