Cags
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
Do you mean you like CAGS, which the system that forces the 1-4 shift before 19 mph, or do you like the CAGS eliminator? People like me never experience the 1-4 shift because we wait until 19 mph.
Waiting until 19 mph to shift out of first would still be characterized as driving "gentle," even when cold.
Waiting until 19 mph to shift out of first would still be characterized as driving "gentle," even when cold.
Last edited by Foosh; Oct 21, 2016 at 10:06 AM.
Burning Brakes
Joined: Dec 2015
Posts: 1,096
Likes: 322
From: Denver Colorado
I dealt with CAGS a few times in my '14 Camaro, but never in my C7 (different driving habits? maybe the tighter 1-3 gears meant i was out of 1st quicker or something?). Then, when tuned, my tuner told me he turned off CAGS, I'm like ok, whatever.
Drifting
Joined: Dec 2012
Posts: 1,630
Likes: 203
From: MI
Would LOVE to pay it again to get rid of this BS. All it does it had annoyance, and complexity to my car.
Last edited by MikeLsx; Oct 21, 2016 at 10:48 AM.
Drifting
Joined: Mar 2016
Posts: 1,731
Likes: 496
From: Glenelg MD
Interesting discussion. I was vaguely aware of some 1st-to-4th shift requirement, but I had no idea what conditions were necessary, etc. Still in the break-in period for mine, but I don't believe I've been denied 2nd gear yet. If/when i hit the issue the first time, then I'll consider picking one up (or making one)... until then, I'll let it fly.
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
Even when breaking in a "zero-miles" car and following the manufacturer's instructions religiously, there's no reason why you'd ever be forced into a 1-4 shift. Instructions call for varying the revs up to 4K rpm, and waiting until just before 3K rpm (19 mph) to shift is a great way to do that when breaking a new car in.
There's no reason to see it when starting out w/ a cold engine either, because you won't come anywhere close to the yellow cold engine band on the tach by waiting until 19 mph to shift out of 1st gear.
There certainly are a lot of Corvette "granny-shifters" out there.
There's no reason to see it when starting out w/ a cold engine either, because you won't come anywhere close to the yellow cold engine band on the tach by waiting until 19 mph to shift out of 1st gear.
There certainly are a lot of Corvette "granny-shifters" out there.
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
GM also has to hit corporate average fuel economy targets (CAFE) by federal regulation. CAGS, cylinder deactivation, and gearing all help by keeping Corvette's mileage ratings at a level that helps meet the target, when averaging the ratings of the entire GM fleet.
Enjoy it while it lasts, and be thankful that manufacturers have been clever enough to find a way to meet the ever increasing fuel economy mandates thus far.
The time will come relatively soon, when the CAFE ratings get so stringent GM won't be able to meet those targets with large displacement, high-HP V8s in the fleet.
Last edited by Foosh; Oct 21, 2016 at 04:47 PM.
Drifting
Joined: Aug 2015
Posts: 1,434
Likes: 183
From: Maple Ontario
Fortunately, you don't get to make that decision. A price hike like that would hurt sales, but that's only part of the puzzle.
GM also has to hit corporate average fuel economy targets (CAFE) by federal regulation. CAGS, cylinder deactivation, and gearing all help by keeping Corvette's mileage ratings at a level that helps meet the target, when averaging the ratings of the entire GM fleet.
Enjoy it while it lasts, and be thankful that manufacturers have been clever enough to find a way to meet the ever increasing fuel economy mandates thus far.
The time will come relatively soon, when the CAFE ratings get so stringent GM won't be able to meet those targets with large displacement, high-HP V8s in the fleet.
GM also has to hit corporate average fuel economy targets (CAFE) by federal regulation. CAGS, cylinder deactivation, and gearing all help by keeping Corvette's mileage ratings at a level that helps meet the target, when averaging the ratings of the entire GM fleet.
Enjoy it while it lasts, and be thankful that manufacturers have been clever enough to find a way to meet the ever increasing fuel economy mandates thus far.
The time will come relatively soon, when the CAFE ratings get so stringent GM won't be able to meet those targets with large displacement, high-HP V8s in the fleet.
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Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
It's true that DOD only works in ECO mode on the M7, but it's not true on automatics. 73% of C7s built from 14-17 to date are automatics, it is the default and automatically activates in most modes. It certainly does help with the highway rating.
Last edited by Foosh; Oct 21, 2016 at 05:04 PM.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,932
Likes: 12,344
From: NE South Carolina
Lets see a dual turbo, 3 Liter, overhead cam, 4 valve per cylinder V6, might work! Oh, but that won't fit in a front engine sports car since the engine profile is too high! What about stuffing it in a mid engine Vette! 
Perhaps not just yet, start/stop will come first with regenerative coasting like we have in our BMW SUV. GM has to do something in the not to distant future! Sooner depending on who wins this election!
The days of the big V8's are waning! Glad I have my 8.2 Liter Street Rod but it only goes to Shows! It's 10 mpg doesn't justify using it much more!
Last edited by JerryU; Oct 21, 2016 at 05:09 PM.
ught one - never installed it. Changed by driving style a little. Anybody that wants it can have it - PM me. First come first served. Free to a good home 
Tech Contributor
Joined: Oct 1999
Posts: 41,037
Likes: 9,801
From: Charlotte, NC (formerly Endicott, NY)
Train yourself to drive a big engine car and spend the money for a CAGS eliminator on some other product that is more useful.
Bill
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
Bill, I'm in stop and go Wash, DC traffic every day, and I still never see it. I just stay in 1st in such situations until above 19 mph. I see no need to shift before that, when I know I'm going to have to stop again in less than a minute.
Racer
Joined: Jul 2011
Posts: 383
Likes: 19
From: Tellico Plains TN
The main problem I have with CAGS is that I see it so infrequently that it really messes me up with it happens. With no traffic obstacles I'd never see it, but one day you'll be turning into a parking lot and the person in front of you will just crawl along. Eventually I get tired of being in first, and then it gets me. Since I don't see it much, it always catches me off guard and it takes a second to figure out why I can't shift.
Overall, I think they did a good job of making it an infrequent annoyance, and if it helped them with mileage numbers, I won't complain. Fortunately it's easy to bypass if it bothers you too much.
Cheers,
Rusty
Overall, I think they did a good job of making it an infrequent annoyance, and if it helped them with mileage numbers, I won't complain. Fortunately it's easy to bypass if it bothers you too much.
Cheers,
Rusty
Last edited by 13brv3; Oct 22, 2016 at 12:35 PM.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,932
Likes: 12,344
From: NE South Carolina
The main problem I have with CAGS is that I see it so infrequently that it really messes me up with it happens. With no traffic obstacles I'd never see it, but one day you'll be turning into a parking lot and the person in front of you will just crawl along.
Fortunately it's easy to bypass if it bothers you too much.
Cheers,
Rusty
Fortunately it's easy to bypass if it bothers you too much.
Cheers,
Rusty
Perhaps not a high probability but no doubt much higher than the need for the recent seat belt software update! That was to correct a very low probability of the system doing a check at exactly the instant when the air bag was to operate in a crash!
An easy $25 mod to avoid every being irritated!
Last edited by JerryU; Oct 22, 2016 at 02:03 PM.
Drifting
Joined: Mar 2014
Posts: 1,767
Likes: 338
From: San Diego CA
Race Director
Joined: May 2008
Posts: 10,742
Likes: 629
From: Manheim Pennsylvania
When I had the C6 CAGS was really a pain and I finally installed an eliminator. The C7's CAGS is really not intrusive, I could count the times it intervened on one hand with fingers to spare.