0toinsanein5.4sec 11-23-2004, 05:35 PM I know I do, save the extra gas on the free way. Obviously there would be a switch where u can control if it is going to be on or off. On, you can save a good amount of gas by it automatically turning off 4 cylinders which would help battle raising gas prices and have it turn on the remaining 4 when u somp on the gas automatically. or u can have it to be always off.
jawzforlife 11-23-2004, 06:05 PM I think it might work as an option. But what about the people who dont want it, but still have to pay for DOD, only to turn the switch off?
Personally gas prices arnt that bad for me right now to need it. And if a car had the option for it I would pass right now. And I would be pissed if a car I was looking at had it standard (non removable) for an extra cost, then if it wasnt there at all.
Does that make sense? In short, as of right now I dont want it.
MissedShift 11-23-2004, 06:22 PM If the system integration is as good as it is in the Chrysler Hemi cars, then a big HELL YA for that. Do I think it should have a switch? No.
If it is as seamless as the aforementioned Hemi cars, then a switch is completely unnessacary. I would imagine that for max-effort race applications, it would be possible to take it out through a computer flash. Besides, a race motor would use different valve-train gear, which would most likely not allow the DOD system to function. Theres simply so many things you can do to increase performance before futzing with the DOD system that it makes sense to make it unswitchable.
Z28Marcus 11-23-2004, 06:31 PM If it is as seamless as Chrysler's implementation, then hell yes. Better gas milage without any loss of HP when you want it most. What's not to like? Unless you own a lot of stock in the oil companies :). I imagine it would be a useful aid in meeting the mpg requirement for avoiding gas guzzler tax too.
I doubt disabling it would be a factory option if it were made availble... if it wasn't seamless, who would want it? Though I can see someone perhaps finding a way through a good old PCM re-flash :).
Z28Marcus 11-23-2004, 06:32 PM If it is as seamless as Chrysler's implementation, then hell yes. Better gas milage without any loss of HP when you want it most. What's not to like? Unless you own a lot of stock in the oil companies :). I imagine it would be a useful aid in meeting the mpg requirement for avoiding gas guzzler tax too.
I doubt disabling it would be a factory option if it were made availble... if it wasn't seamless, who would want it? Though I can see someone perhaps finding a way through a good old PCM re-flash :).
Lol... looks like MissedShift beat me to it.
Z28Marcus 11-23-2004, 06:34 PM If the system integration is as good as it is in the Chrysler Hemi cars, then a big HELL YA for that. Do I think it should have a switch? No.
If it is as seamless as the aforementioned Hemi cars, then a switch is completely unnessacary. I would imagine that for max-effort race applications, it would be possible to take it out through a computer flash. Besides, a race motor would use different valve-train gear, which would most likely not allow the DOD system to function. Theres simply so many things you can do to increase performance before futzing with the DOD system that it makes sense to make it unswitchable.
Good point about the valve train. It's possible for a max effort high RPM race motor, the DoD stuff simply wouldn't be able to cut it so you'd have to ditch it all.
unvc92camarors 11-23-2004, 06:37 PM option...maybe
the only real thing i'd be worried about is with an aftermarket exhaust on it, how's itgoing to sound in 4banger mode? probably not a pretty sound
that'd be the only real thing holding me back (and not knowing whether it will give powre instantly on demand (which it should from what i read))
MissedShift 11-23-2004, 06:42 PM Lol... looks like MissedShift beat me to it.
GET OUT OF MY MIND!!! :lol: :lol: :D
Z28Marcus 11-23-2004, 06:49 PM option...maybe
the only real thing i'd be worried about is with an aftermarket exhaust on it, how's itgoing to sound in 4banger mode? probably not a pretty sound
that'd be the only real thing holding me back (and not knowing whether it will give powre instantly on demand (which it should from what i read))
Probably be kinda quiet at idle. As soon as you get on it in any serious way, it's gonna switch modes. I think it would be fine.
AronZ28 11-23-2004, 07:08 PM I'd have to say no thanks. Not on a Camaro. The 4th gen cars did pretty good on gas mileage with the T-56, and I even manage 20 MPG in my A4 with 3.23's
Two reasons not to have it:
1. Added cost. Have to keep this car affordable
2. Will sound like a@@ with a loud aftermarket exhaust. I wouldn't buy a Camaro with DoD for this very reason(unless it was super easy to remove)
0toinsanein5.4sec 11-23-2004, 07:20 PM option...maybe
the only real thing i'd be worried about is with an aftermarket exhaust on it, how's itgoing to sound in 4banger mode? probably not a pretty sound
that'd be the only real thing holding me back (and not knowing whether it will give powre instantly on demand (which it should from what i read))
thats exactly why i was thinking of having the switch to turn it off if you want
Big Als Z 11-23-2004, 07:21 PM I say that the 3.9 and 5.3 should have DoD. Combined with teh 6spd auto and 6spd manual, they could be excelent on gas, and they might actualy appeal to people outside of the track.
I do NOT want to see DoD on the LS2.
Darth Xed 11-24-2004, 08:26 AM So far, in all the time we've discussed DOD (and in the meantime... Diamler/Chrysler has actually come out with it....:think: ), the only legitimate down side anyone has been able to come up with is the potential exhaust note at idle....
If this can be addressed (not allow cylinder deactivation under 1000 rpms??) then I can see no reason not to fly with it, assuming it is completely 100% transparant from a performance standpoint)
I think it might work as an option. But what about the people who dont want it, but still have to pay for DOD, only to turn the switch off?
It would probably cost more to offer a non-DoD optional engine of the same displacement, that would be one more engine to certify.
Since the Camaro will be sharing a platform with other GM cars, I think we are going to see a DoD LS4 in the Camaro and non-DoD LS2 on the high end Camaro.
LS4 = for those who want V8 HP with V6 milage.
LS2 = for those who's top priority is a high performance V8
L.A. Z 11-24-2004, 09:09 AM I think it should be an option.
Also, I think it should be switchable both ways...as in, be able to lock it into 4cyl mode...just so you can tear down a ricer and after its over say "That was only half my cylinders"
I think it should be an option.
Also, I think it should be switchable both ways...as in, be able to lock it into 4cyl mode...just so you can tear down a ricer and after its over say "That was only half my cylinders"
dedicated 4 cyl. would be a cool mode. That would be sweet for road trips, or when you let your friends drive :D ;)
Todd80Z28 11-24-2004, 10:33 AM I say great idea. Seamless, non-switchable. If you want the option without it, pay a guzzler tax.
AAAAAAA 11-24-2004, 10:38 AM I voted yes for DOD... but I doubt it really matters since I will probably be getting myself a charger instead.
jg95z28 11-24-2004, 11:43 AM Some of you guys are too narrow-minded. :lol:
DoD = fuel economy = better emissions = no gas guzzler tax
DoD does not mean poor performance.
Heck, if a V6 can be tuned to sound like a big block V8 by simply changing out a muffler*; don't you guys think that GM is capable of hidding that fact with DoD? Besides, DoD doesn't kick in a WOT when you're actually going to hear the exhaust rumble. It kicks in at cruising speed on the highway.
:think:
* I'm referring to the Flowmaster muffler for the 4th gen V6 f-bodies.
Besides, DoD doesn't kick in a WOT when you're actually going to hear the exhaust rumble. It kicks in at cruising speed on the highway.
:think:
I'd be all for less highway drone.
* I'm referring to the Flowmaster muffler for the 4th gen V6 f-bodies.
3.4L Camaros with a borla or Flowmaster sound awesome
redzed 11-24-2004, 01:39 PM So far, in all the time we've discussed DOD (and in the meantime... Diamler/Chrysler has actually come out with it....:think: ), the only legitimate down side anyone has been able to come up with is the potential exhaust note at idle....
1. Have you actually driven a 300C or a Magnum RT?
2. There is a very strange exhaust resonance, possibly from the crossover pipe that's supposed to smooth out the exhaust note in 4-banger mode.
3. Then there's the throttle reponse issue. It makes me wonder if adding DoD added a bit of confusion to the engine management software.
4. The fuel economy is still pretty rotten on the Magnum RT, despite DoD. Didn't R&T's test Magnum RT get something like 12.4MPG? Didn't Automobile's long term test get only 20MPG average?
If this can be addressed (not allow cylinder deactivation under 1000 rpms??) then I can see no reason not to fly with it, assuming it is completely 100% transparant from a performance standpoint)
There's a lot more complexity to DoD system than you're letting on. Look at Honda's system on the new Oddyssey minivan. There's the electronically controlled engine mounts, not to mention a noise cancellation system that's part of the stereo. That's the tip of the iceberg.
The bottom line is that a DoD system will pose a number of maintainence headaches down the road. Just wait a few year until the speakers start to delaminate in those Oddyssey vans. Poof, the noise cancellation system goes by-by and the interior your used Honda van becomes an echo chamber during 3-cylinder mode.
MarineReconZ28 11-24-2004, 01:41 PM I voted yes. I think it would be a good thing for sales. But does DOD mean when you tear apart the motor in a couple years you will have some pistons, rods, valves, springs and whatever else that would be worn and the other half that are still fine?
redzed 11-24-2004, 02:52 PM I voted yes. I think it would be a good thing for sales. But does DOD mean when you tear apart the motor in a couple years you will have some pistons, rods, valves, springs and whatever else that would be worn and the other half that are still fine?
That's the big question mark. Even assuming that the fundimentals of the engine aren't effected in terms of durability (and that's a HUGE assumption) there will still be issues with the systems that are supposed to take the noise and vibration out of an engine that's running on half of its cylinders.
Abidar 11-24-2004, 04:14 PM I voted no. As much fun as it would be to race Hondas on only 4 cylinders, I believe it's unnecessary. Look at the Vette. It gets pretty good gas mileage for a 400 hp V8. I get 20+ out of the LS1 and I'm close to 30 on the highway even with those occasional WOT spurts... ;) I think it would be good as an option or maybe even standard on V6/ LS4, but the top dog should not receive DoD.
I like my feet having control over THE ENTIRE ENGINE and every ounce of power it makes.
JoeliusZ28 11-26-2004, 11:50 AM Yes because it will put those import guys who are so worried about fuel economy in their place
...but it but it has to be optional and needs a switch. ...needs a switch.
unvc92camarors 11-26-2004, 06:27 PM Some of you guys are too narrow-minded. :lol:
DoD = fuel economy = better emissions = no gas guzzler tax
DoD does not mean poor performance.
Heck, if a V6 can be tuned to sound like a big block V8 by simply changing out a muffler*; don't you guys think that GM is capable of hidding that fact with DoD? Besides, DoD doesn't kick in a WOT when you're actually going to hear the exhaust rumble. It kicks in at cruising speed on the highway.
:think:
* I'm referring to the Flowmaster muffler for the 4th gen V6 f-bodies.
don't know about you, but my gmmg can be heard even at idle
i just really don't want that 4banger sound although i would definately welcome the added fuel economy
i'm just trying to have my cake and eat it too:p
also, on the issue of how it wears, i believe it switches which cylinders deactivate and evens out the time that each set of cylinders are off/on
so there "shouldnt" be any issues with that
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