Andy30thZ

How many guys would give up 2mpg to have "good cruise" sound?

A friend of mine bought a new 300C with the hemi and was complaining that the exhaust note, when in the 4 cylinder mode of the multi displacement system, sounds disgusting with a loud catback......

If the new C6 is getting almost 30mpg (but the GTO is only getting low 20's...) with out DOD....Is another 2 miles to the gallon worth hating a good flowing exhaust at cruise?

stars1010

Honestly I'd rather have the gas milage

94Camaro_Z_28

I'd rather the milage as well. I'm not as concerned with the note cruising as I am with it when I accelerate at WOT....

QATransAm

I haven't heard a dod car with exhaust yet...

I would assume, with headers and exhaust it would sound horrible cruising...even worse without cats. Thats not for me

Andy30thZ

Yeah, I guess that is the issue for me. The first thing I do is rip off the exhaust for something fairly loud.
My bud said you can't stand to be in the car when it goes into 4 cylinder mode it sounds so bad...... I don't think I could stand owning a new Camaro that I couldn't put loud pipes on.....

CAMAROJOE

On a Camaro no. on a truck or non performance car most likely.

JakeRobb

Corsa has been working on a catback that still sounds good in 4-cyl mode. Several months ago, I heard an early prototype on a Charger RT -- it still needed some work at that point, but I trust that they will figure it out (if they haven't already).

BitchinCamaro

I like my car quiet at cruise... If I am going on something like the Hot Rot Power tour I don't want to be deaf by the time I get to the next stop. I think I’d go for the MPG rather than a little sound difference as long as it still sounds good at WOT!

poSSum

I'll take the AFM.

slayerxxx213

I don't see a problem...Just give us a button where we can turn the DOD on or off as we please

notgetleft

Did you get a button for CAGS?

AFM will no doubt be needed/desired for CAFE. I'm no EPA/legal expert, but i'd venture that if it was possible to switch it off, then it wouldn't count. That's why i used the CAGS example. On a similar note, how about the 3.73 geared A4 4th gens that didn't even have a selectable first gear on the shifter because it woulnd't pass a drive by volume test with a sleectable first gear.

Unfortunately, unlike the above examples which were easily defeated, AFM will probably need a tune to remove. Odds are if you just unplug the solenoids for teh oil diverters, the rest of teh engine management will not respond accordingly and you'll still have dead holes.

JakeRobb

Those were 2.73 gears, and that's the first time I've ever heard that given as a reason for preventing the selection of first gear. Can anyone corroborate this?

MagnaPilot

Yes I have heard this before... quite a few years ago of course... My '95 had this, and it was a bit louder in 1st... (I bypassed the blockout). So it makes sense given the LT1's rather loud stock exhaust.

And as for the DoD sound, I personally think it sounds like a WRX in V4 mode, not as raspy of course, like a big **** version I guess....not that bad really, it still has the same tone as the engine in V8 mode, just the pulse is cut in half. Really isn't as bad as everyone makes it out to seem.... with a good exhaust, it will sound fine.

toegead93

Or at least be able to tune it out of the program

jg95z28

Sound vs. AFM? Do you realise how boy-ricer that sounds? If performance is not impacted, I'd rather have a car that's dead quiet in cruise mode. But then I've always favored the Q-ship approach... i.e. walk softly, but carry a big stick.

If you're seriously concerned that your car isn't loud enough while cruising at highway speeds, you have other more issues that need attention.