Quote:
Originally Posted by JANNETTYRACING
Again it really depends on Region you live and drive, If you live in the Desert where it is completely flat AFM is your Friend.
If you live where there are hills and it is constantly switching back and forth from 4-8-4-8-4-8 there is no benefit and in many cases hurts economy vs staying in 8 cyl mode.
Where I live here in the Northeast it is beneficial to stay in 8 cyl mode and pull a higher gear, my mileage has improved since I turned of AFM.
The whistle is a product of the factory TB and Intake manifold and is no indication of added air flow or not more like Muffling it or not.
Yes I have Custom tunes available via the SCT X4, AFM off is still standard in my tunes unless you request otherwise.
Ted.
Great explanation Tsloper, you are one of very few people who understand fuel trims.
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TO YOU BOTH!
Thank you VERY much...you have made it VERY understandable for someone like myself, that has very basic knowledge!
Ted, I will be in Contact soon...I actually want to see intake testing or someone provide real data before I decide on a final intake for my DD, then get my exhaust, then I will have it tuned!
If possible, all 3 will come from you again.
