3.73 and afm - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Dertyboi · 06-10-2013, 01:01 PM

I have a 2011 L99 bolt on (check sig) and I was looking into getting some gears (3.73) I know this will increase the cruising rpm speed is it possible to combat that with keeping afm only in 6th gear or if it is possible to tune afm for only one gear

Alvin@PCMofNC · 06-10-2013, 04:35 PM

We have turned AFM for several customers even quite a few dealers in the area. Our results have been that along with a good tune you will not see a drop in mileage, in fact most pick up fuel mileage with the AFM turned off and our tune.

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Dertyboi · 06-10-2013, 05:00 PM

Quote:

Originally Posted by Alvin@PCMofNC

We have turned AFM for several customers even quite a few dealers in the area. Our results have been that along with a good tune you will not see a drop in mileage, in fact most pick up fuel mileage with the AFM turned off and our tune.

.

I know the mpg stay the same or better with a good tune mine is currently tune out and at 70mph i get 24 to 25mpg but with the bigger gear (3.73) cruising speed at 70mph will be over 2000rpms and any time cruise just barley over 2000rpm mpg drops to about 19 to 20 I want a little more get up but still want to be reasonable with my mpgs maybe 22 to 23mpg this car is driven every day

JANNETTYRACING · 06-10-2013, 06:59 PM

Quote:

Originally Posted by Dertyboi

I know the mpg stay the same or better with a good tune mine is currently tune out and at 70mph i get 24 to 25mpg but with the bigger gear (3.73) cruising speed at 70mph will be over 2000rpms and any time cruise just barley over 2000rpm mpg drops to about 19 to 20 I want a little more get up but still want to be reasonable with my mpgs maybe 22 to 23mpg this car is driven every day

This is Perfectly Normal and expected.

Speed Kills MPG more than any other factor.

The Faster you go, the More Gas/Horsepower it takes to push the car through the air.

The RPM Plays a very Small Roll in MPG.

Hope this Helps.

Ted.

Dertyboi · 06-10-2013, 07:11 PM

Thanks Ted but will the afm help im only wanting to do this until I start the heavy stuff (heads and cam) by then I will have another beater to drive

JANNETTYRACING · 06-11-2013, 09:28 AM

Quote:

Originally Posted by Dertyboi

Thanks Ted but will the afm help im only wanting to do this until I start the heavy stuff (heads and cam) by then I will have another beater to drive

No it will not as there is not enough power on 4 cyl mode to run that fast.

In order for AFM to be an advantage you have to run like 55 mph on Flat ground for a very long time.

Ted.

06-10-2013, 01:01 PM	#1
Dertyboi SS1 Drives: 2015 Camaro 1SS/RS Join Date: Jun 2011 Location: Paulding County, Ga Posts: 144	3.73 and afm I have a 2011 L99 bolt on (check sig) and I was looking into getting some gears (3.73) I know this will increase the cruising rpm speed is it possible to combat that with keeping afm only in 6th gear or if it is possible to tune afm for only one gear __________________ Speed Engineering Long tube header CAI intake resonator delete with x pipe and magnaflow bullet mufflers hotchkis 1in springs tuned by Josh Spartan LSX Last edited by Dertyboi; 06-10-2013 at 02:25 PM.

06-10-2013, 07:11 PM	#5
Dertyboi SS1 Drives: 2015 Camaro 1SS/RS Join Date: Jun 2011 Location: Paulding County, Ga Posts: 144	Thanks Ted but will the afm help im only wanting to do this until I start the heavy stuff (heads and cam) by then I will have another beater to drive __________________ Speed Engineering Long tube header CAI intake resonator delete with x pipe and magnaflow bullet mufflers hotchkis 1in springs tuned by Josh Spartan LSX

06-10-2013, 04:35 PM	#2
Alvin@PCMofNC Drives: 2010 IOM RSS Join Date: May 2009 Location: Mooresville Posts: 363	We have turned AFM for several customers even quite a few dealers in the area. Our results have been that along with a good tune you will not see a drop in mileage, in fact most pick up fuel mileage with the AFM turned off and our tune. .