AFM annoyance or longevity concern?
Instructor
Joined: Nov 2023
Posts: 191
Likes: 120
From: Atlanta area
I ran with a Range Engineering plug in on my C7 A8 for over 7 years with it never in V4. I also had the transmission oil changed to the newer version although I’d never had torque converter clutch problems. When I traded the’16 for my ‘23 I pulled the Range out to put it in the ‘23. Have not done this yet. Has anyone had experience with the Range in a C8 Corvette? It just seems that a V8 car like Corvette should run on all 8 cylinders.
Racer
Joined: May 2018
Posts: 269
Likes: 58
From: Auburn WA
If I’m reading the manual correctly I can employ the Z mode to deselect the AFM by selecting “Track” but will the remaining selections for “Tour” operate as before? Does Z mode have to be selected at each “key on?”. I just bought this car & have not had a chance to drive yet. Work took me away for 2 weeks.
Instructor
Joined: Nov 2023
Posts: 191
Likes: 120
From: Atlanta area
If I’m reading the manual correctly I can employ the Z mode to deselect the AFM by selecting “Track” but will the remaining selections for “Tour” operate as before? Does Z mode have to be selected at each “key on?”. I just bought this car & have not had a chance to drive yet. Work took me away for 2 weeks.
I set mine as this:
Steering: Sport
Engine Response: Track
Exhaust Level: Track
ABS: Sport
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
Instructor
Joined: Nov 2023
Posts: 191
Likes: 120
From: Atlanta area
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
If I’m reading the manual correctly I can employ the Z mode to deselect the AFM by selecting “Track” but will the remaining selections for “Tour” operate as before? Does Z mode have to be selected at each “key on?”. I just bought this car & have not had a chance to drive yet. Work took me away for 2 weeks.
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
Yes you can, but the slightest touch of the gas or a few mph drop in speed and it immediately downshifts again. That process is a awful way to drive around. Better off in manual mode..
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Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
Instructor
Joined: Oct 2020
Posts: 209
Likes: 43
Instructor
Joined: Oct 2020
Posts: 209
Likes: 43
…and that is the beauty of it!!! Not everyone wants to hum along in Tour mode, each to their own.
Melting Slicks
Joined: Aug 2000
Posts: 2,416
Likes: 1,189
From: Early 2020 Z51 Coupe, Original Owner, Ahwatukee Foothills, AZ
Hey ArizonaZ06, You are having done exactly what I would love to do, send out the ECM to have it unlocked, have it tuned on 93, tuned on E85 after I put in the sensor and have AFM shut off (nonsense is right) . Please be sure to let us that really care know the results you get. Thanks in advance.
V4 is "no mas", and I got to tell you I could not enjoy this better.
Unlocking the PCM is to Flex Fuel like taking your car from a Hyundai to a Lambo. It's that effing good.
All I have to do now is tune in the Solar controller it's too less sensitive.
My tuner says I should go to OEM but realistically somewhere in between is going to be work for me.
The car unlocked feels raw and baked for me.
Most Corvette guys just want to tool around but that's not my game, never.been a poser.. Can't wait to dust a first Z06.and many more Tesla's.
Twin turbos and a Cam might come along, but no time soon, I'm digging the new Stingray just how it is. 150 in a half a mile. I mean you can always go faster but I'm where I want to be.
Happy those days are gone tweeting my octane, No more going down to Luv's for 100 unleaded to bring my octane up to 93. Corn is fuel E85 is 104 octane and burns cleaner especially for direct injection engines.
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
All one needs to do is drive around in town, in the country, and on the highway for about 30 miles only in track mode with no paddle shift usage and you will get your data first hand. Up shifts during light throttle driving do not happen until 3000 rpm, so you are constantly driving around in 1 or 2 gears lower than you would normally be in. Yes you can upshift with the paddles, but the slightest speed drop or a little nudge on the gas and the car will down shift right back where you were. Maybe some like that IDK.
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
V4 is "no mas", and I got to tell you I could not enjoy this better.
Unlocking the PCM is to Flex Fuel like taking your car from a Hyundai to a Lambo. It's that effing good.
All I have to do now is tune in the Solar controller it's too less sensitive.
My tuner says I should go to OEM but realistically somewhere in between is going to be work for me.
The car unlocked feels raw and baked for me.
Most Corvette guys just want to tool around but that's not my game, never.been a poser.. Can't wait to dust a first Z06.and many more Tesla's.
Twin turbos and a Cam might come along, but no time soon, I'm digging the new Stingray just how it is. 150 in a half a mile. I mean you can always go faster but I'm where I want to be.
Happy those days are gone tweeting my octane, No more going down to Luv's for 100 unleaded to bring my octane up to 93. Corn is fuel E85 is 104 octane and burns cleaner especially for direct injection engines.
Unlocking the PCM is to Flex Fuel like taking your car from a Hyundai to a Lambo. It's that effing good.
All I have to do now is tune in the Solar controller it's too less sensitive.
My tuner says I should go to OEM but realistically somewhere in between is going to be work for me.
The car unlocked feels raw and baked for me.
Most Corvette guys just want to tool around but that's not my game, never.been a poser.. Can't wait to dust a first Z06.and many more Tesla's.
Twin turbos and a Cam might come along, but no time soon, I'm digging the new Stingray just how it is. 150 in a half a mile. I mean you can always go faster but I'm where I want to be.
Happy those days are gone tweeting my octane, No more going down to Luv's for 100 unleaded to bring my octane up to 93. Corn is fuel E85 is 104 octane and burns cleaner especially for direct injection engines.
Melting Slicks
Joined: Aug 2000
Posts: 2,416
Likes: 1,189
From: Early 2020 Z51 Coupe, Original Owner, Ahwatukee Foothills, AZ
Right now I've got to turn the Solar throttle controller down so things are not so jerky. My tuner says just put it back on OEM. I like the sensitive throttle controller so more than likely somewhere in between will be the best fit.
Instructor
Joined: Nov 2023
Posts: 191
Likes: 120
From: Atlanta area
What's it typically cost for a basic flex fuel tune on an otherwise stock 2024 C8 1LT? I live close to Vengeance Racing, so I am sure they can do the work... Kinda hesitant to void my warranty though on a new car with a DCT setup that seems to commonly have issues. Would hate to get something simple like a flex tune, only to have a DCT crap out on me a year from now and have it cost me both kidneys to repair/replace...
Racer
Joined: Jul 2021
Posts: 381
Likes: 180
From: Gilbert, AZ
Tour when cruising to work or when I want a calm relaxing drive.
Z mode when driving aggressively.
Z mode and manual mode when really pushing things.
Race Director
Joined: Sep 2016
Posts: 13,180
Likes: 10,523
Neither. I don't find it annoying at all, and there's no real evidence of any longevity issues on the literally millions of small block V8s fitted with AFM.
If you're not "just cruising around," you'll never encounter AFM on a stock C8. Give it more than a tiny bit of gas pedal and it's instantly in V8 mode.
Sounds as though AFM is a big improvement from the past, but personally cannot stand it. I get it, a lot of C8 owners just want the cruise around in the slow lane and enjoy the mpg.
Having my PCM sent in to HP Tuners in just a week for the Global B E85 Flex Fuel Dyno tune, and happy to report that my C8 will forever be finished with the V4 nonsense.
Having my PCM sent in to HP Tuners in just a week for the Global B E85 Flex Fuel Dyno tune, and happy to report that my C8 will forever be finished with the V4 nonsense.
Race Director
Joined: Sep 2016
Posts: 13,180
Likes: 10,523
I ran with a Range Engineering plug in on my C7 A8 for over 7 years with it never in V4. I also had the transmission oil changed to the newer version although I’d never had torque converter clutch problems. When I traded the’16 for my ‘23 I pulled the Range out to put it in the ‘23. Have not done this yet. Has anyone had experience with the Range in a C8 Corvette? It just seems that a V8 car like Corvette should run on all 8 cylinders.
Last edited by Red Mist Rulz; Jan 3, 2024 at 04:54 PM.