7th Gen ('06-'07): LS4 Mileage W/O AFM

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Nov 29, 2017 | 08:24 AM

#11

ChibiBlackSheep

Monte Of The Month -- August 2014

Joined: Sep 2008

Posts: 25,145

From: Southeast PA

Quote:

Originally Posted by skijosh

I have a superchips flashpaq tuner. It doesn't turn off AFM,but It seems to have better throttle response and slightly better performance, at least i feel it does. The mileage has prettyuch stayedthe same. I see they have a newer updated tuner that has the option to turn off AFM.

Those handheld tuners aren't that great. You want to get the car tuned with EFI-Live or HPTuners. I personally use HPTuners and prefer it. A lot of vendors can provide you with a mail order tune if you don't want to own the software yourself though.

There is so much that you can edit, it's well worth it.

Quote:

Originally Posted by 96z34man

You may be correct. I absolutely will be getting mine tuned, if for no other reason than to do something about the godawful throttle response. If a tune drops me to 13 mpg, you may be sure that a) I will have it tuned immediately back in, and b) you will hear about it.

A tune should wake the car up very nicely. You shouldn't drop MPG at all, unless your tuner messed up and left your car in open loop or messed up fueling beyond just adding a few degrees of timing and a touch more fuel on the upper end.

Last edited by ChibiBlackSheep; Nov 29, 2017 at 08:27 AM.

Dec 1, 2017 | 07:59 AM

#12

skijosh

Thread Starter

Joined: Jul 2012

Posts: 15

From: Bay City MI

So come to find out my superchip tuner can turn off active fuel management. So im giving it a shot.

Dec 1, 2017 | 11:23 AM

#13

chifan

Monte Of The Month -- June 2016

Joined: Apr 2013

Posts: 722

From: Paragould, Arkansas

Quote:

Originally Posted by skijosh

So come to find out my superchip tuner can turn off active fuel management. So im giving it a shot.

I don't know a damn thing about tuning, but that is something I'd be interested in doing, also...

Jan 26, 2018 | 07:09 AM

#14

skijosh

Thread Starter

Joined: Jul 2012

Posts: 15

From: Bay City MI

So been driving without AFM for about 2500 miles. My calculations have been between 15-17 mpg. This is also winter and remote start miles. Hoping summer does better.

Jan 26, 2018 | 07:45 AM

#15

06mistreSS

Monte Of The Month -- November 2012
Monte Of The Month -- August 2015

Joined: Aug 2011

Posts: 4,793

From: Ann Arbor, Michigan

Quote:

Originally Posted by chifan

I don't know a damn thing about tuning, but that is something I'd be interested in doing, also...

I'm in the same boat... I don't know that much about it. And, on top of that, there seems like various directions you can go and then actually going about getting it done 'seems like' a somewhat difficult process which is probably the main reason why I have yet to do it. It's probably not but that's what I've been telling myself.

Seems like you can go 'big brand' or 'local buddy'. I've seen Jason (Maniac) do it before and I know of a few others in the area who are experienced with tuning the LS4.

Last edited by 06mistreSS; Jan 26, 2018 at 07:47 AM.

Jan 26, 2018 | 07:49 AM

#16

06mistreSS

Monte Of The Month -- November 2012
Monte Of The Month -- August 2015

Joined: Aug 2011

Posts: 4,793

From: Ann Arbor, Michigan

By the way, skijosh, since you're in Michigan you should to check out our Spring Meet coming up in May. Great chance to meet up with other local Monte owners, chat and see their cars.

https://montecarloforum.com/forum/me...34/#post708582

Feb 15, 2018 | 06:43 PM

#17

S.O.G.

Joined: Mar 2012

Posts: 513

From: Minnesota

I always drive in 3rd to purposely keep it in 8cyl mode cuz I'm too cheap to pay to get it deactivated haha but with that said I'm averaging between 16-18. Gotta admit ive got a real heavy foot tho lol