Plugged it in.Then started it.Car was warmed so,so.Started in M Mode first.Now my 17 GS has about 6700 miles.No issue with any shifting,ever
Went to hit 2nd manually it slipped then i up shifted again and it went into 3rd.
Thinking maybe the car needs more time to learn the pluggin?
Well shifted to auto.Under moderate acceleration,this module shifted quickly threw the gears.Don't even think i was doing 50 yet and it's already in 6th or 7th.The engine rpm's were..maybe 1500.
This can't be good.Engine has all 8 running but low,low rpm's.
I'm a believer in rpm's not lugging for engine durability.
I understand without the Range it shifts quickly in 4 cylinder mode.
That is the design of this drivetrain.It shifting quickly in 8 cylinder with Range is not the design of this car.
If the shifts were spread out with more rpm's i would be more confident with the Range install..
Any opinions??

 

Are you saying the Range device has changed your shift points?

 

I didn't compare exactly.I know stock shifting was quick to keep rpm's down for fuel consumption.I think the range is quicker shifting now i think about it.It really keeps them rpm's down in a v8.Not sure if that is bad on the car.Is it a marketing sell to protect your tc and crank?
Lugging a v8 ain't good.How much actually testing in the long run for this product?? Maybe we are the Ginny Pigs?

 

What you talkin' bout, Willis?

 

Range does not change the shift points .....if you want to change your shift points yourself you can use a Diablo I3

Sell the range device and kill two birds with one stone , turn off AFM and change your shift points all with one device ,

If you have to go to dealer , just restore the factory tune .. takes less than 3 minutes

Dave

 

uhm they can tell if the ecs was changed even if you change it back. If you want to tune man up and if the car breaks suck it up without the warranty. There is so much bitching about GM but essentialy your trying to cheat. In any event rest assured they can tell if you did a tune.

 

uhh no.....not with a Diablo ......

Please don't make a statement when you are not 100% sure as that's how internet legends are started . Do u have first hand knowledge ??? Or is this hear say .....

Help me stamp out internet legends will u please ......

The ECM (not ecs lol) logs any update , a Diablo restores the original log file along with the checksum .....
HP tuners and the others will not and can be detected

Been tested on my C6 .....
Now using it on my C7

Ps I am manning up ... all I want to do is turn off AFM ....I did not ask for it , did not want it , nor did I pay for it ...

dont want the issues it causes with the A8 either

anddddd I don't want the issues experienced with the range unit either .....which is cheating also right ???
Dave

 

Are you ABSOLUTELY POSITIVE..Put right hand on a stack of Bibles.....
Are you.....No religion here..

 

Perhaps you're now noticing something that has been happening all along. The A8 does shift through the gears fast and frequent, especially if your driving moderately. The engine sounds like its lugging, the tach rarely goes above 1500. All for gas mileage.

Let me share what little I think I know. If you're used to a manual transmission like used in the Corvette you may not know what's different in the A8. M7s and the like reach the 1 to 1 ration at 4th gear. The A8 has 6 gears in that same range, it reaches 1 to 1 in sixth gear. This means more shifts to reach 60 mph compared to the manual, both being driven alike of course. 1st gear is also a lower gear ratio so a faster launch should be possible, even though final drive ratio at the differential is slightly higher with the A8. This also means that with correct application of shifts the engine is always closer to maximum efficiency or power, depending on needs. The other 2 gears are overdrive, of course, and the computers shift into 8th at about 60 mph, if memory serves. That's a lot of shifting.

Here's a chart of the A8 I found on the internet, so you know its gotta be correct.




Here's the M7 chart, just for comparison.



Both charts are for 2014 and '15 models. Later models may be slightly different.

 

Your probably right.I was gonna remove range on my next time out.Haven't had a next time yet.
Thanks for the excellent post

 

My new Range is working flawlessly.

 

I ran the range for the first time a few days ago.
No change in shift points (A8).
It did do what it was suppose to do-stop AFM.

 

My main worry was the Lugging.I thought it work harm the engine?
Guess not...A GM Thing.RPM'S Down..Fuel Mileage Up

 

I can attest to this it, the latest version has modified and for the most part improved the shift points on the A8 so who knows what it might do for the M7.

 

 

I think I will purchase Range for my new G S.
Where is the best/cheapest place to buy it?

 

Direct from Range Technology website. Search for free shipping coupon.

 

You may want to consider a Vitesse throttle controller. I run one on my A8 equipped car along with a Range device. Set the Vitesse to setting 6 or 7 and you'll never experience lugging again. And the car is so much more fun to drive!

 

I'll look into that.Thanks