Cured from V8 Bug

[Yohan]

Originally Posted by SimpleGreen

Because engines are still very much mechanical beings. It goes much deeper than computer work. Valve sizes, camshaft profiles, piston sizes, crank stroke, head flow, intakes, etc...the engine doesn't make high torque because that's not how small naturally aspirated V6s work. Its extremely common for a motor of the size to make more HP than TQ the way this one does. It's simply the nature of the beast.

You're right. Makes sense. Guess I just was shocked by the Sequoia's 4.7L 240hp low end response even being so heavy, and then comparing that to me having to rev mine A6V6 to 4000rpm to get a similar feel. Have taken to heart and put into practice your advice of driving in Sport mode and just revving it more---so far so good. Getting good mpg still, and drving it more agressively is sweet on this car.

[SimpleGreen]

Originally Posted by Yohan

You're right. Makes sense. Guess I just was shocked by the Sequoia's 4.7L 240hp low end response even being so heavy, and then comparing that to me having to rev mine A6V6 to 4000rpm to get a similar feel. Have taken to heart and put into practice your advice of driving in Sport mode and just revving it more---so far so good. Getting good mpg still, and drving it more agressively is sweet on this car.

Hah, cool. Just gotta find your style.

It throws me for a loop too when I get in my truck. It drives like GARBAGE compared to my Camaro but the on tap power is superior.

Still LOVE my 1LT. Three months later and I still get excited to see it in the parking lot after work

[Yohan]

Same here. My next door neighbor looked at my 1LT today after work, and he couldn't believe I was getting 24.7 mpg ave on "this beast", lol.

These cars are just amazing. Would love to check out a simpler tuner/programmer to play around w/ shift points.

[shadycamaro]

@Yohan

I struggled with the moderate performance your speaking of... in the rare occasions I'm "conservatively" driving the car.

You should have noticed a pretty good difference when in "sport mode" rather than regular old drive. The MPG's don't fall off by any huge amount either (unless WOL'ing it for fun but thats the case in D as well - shifts are just sooner).

The way this car gets it's higher mpg is thru AFM "active fuel management". It's genious & crap at the same time IMO. The car drops from 6 active firing cylinders to 4. So at low torque & heavy curb weight... your now trying to move this car on a 4 banger rather than a 6. That causes the lug & when radio off the chatter/vibration noise from below (2nd thru 3rd gear). WRONG, TRY AGAIN - Thanks AngryBird!

As I stated before I have had this issue in many GM cars. You can complain till blue in the face, nothing they are going to change or "fix" from factory standpoint.

I personally do not have the trifecta tune, but have driven others with it & the TCM modification they provide corrects this immensely. I have had other tunes on my prior pontiac g6 & g8... as well as my Cadillac CTS. They all experianced issues in different shift points as well & were corrected/improved by aftermarket solutions.

Good luck!

[Angrybird 12]

Originally Posted by shadycamaro

@Yohan


The way this car gets it's higher mpg is thru AFM "active fuel management". It's genious & crap at the same time IMO. The car drops from 6 active firing cylinders to 4. So at low torque & heavy curb weight... your now trying to move this car on a 4 banger rather than a 6. That causes the lug & when radio off the chatter/vibration noise from below (2nd thru 3rd gear).

As I stated before I have had this issue in many GM cars. You can complain till blue in the face, nothing they are going to change or "fix" from factory standpoint.


Good luck!

Umm the 6 does not have AFM. I don't know where you got that info. Only the SS L99 with auto transmission has AFM.
Mine does not vibrate or chatter at low RPMs and neither did my 2010.

[shadycamaro]

Originally Posted by Angrybird 12

Umm the 6 does not have AFM. I don't know where you got that info. Only the SS L99 with auto transmission has AFM.
Mine does not vibrate or chatter at low RPMs and neither did my 2010.

Must have mis-read that along the way... thanks for the quick correction & sorry for mis-information.

So, I guess it's just the factory TCM shift points then. I have seen many people complaining about the same performance lag on here. The vibration/chatter I experianced (although on a 2012)... I found may be due to bad exhaust from factory (which I believe many either 2010/11 owners experianced - you had to bang at rear to confirm & GM genrally replaced to correct). I've replaced mine with aftermarket recently & no longer hear that over the new exhaust note


Thanks again for the AFM info, no strikethru available in edit...

[Yohan]

As far as tunes go, came across this: http://www.camaro5.com/forums/showthread.php?t=79922

Are the tunes detectable or not? Pretty strong challenge right there. GM seems to be prety tough on tunes, taking hardline against anyone caught with one:(

[Yohan]

@Shady--sport mode is the only way I'll be driving my car with. Shifts are a little better as they are a little longer. MPG is the same pretty much, too. This should be the default setting from factory. Its a sports car, and should feel sport mode like from get go, man!

[shadycamaro]

Originally Posted by Yohan

@Shady--sport mode is the only way I'll be driving my car with. Shifts are a little better as they are a little longer. MPG is the same pretty much, too. This should be the default setting from factory. Its a sports car, and should feel sport mode like from get go, man!

If you go with trifecta, their tune can be set to replace sport mode & then drive would still be available for good mpg on trips/long distance. They are the only one I know of that offer transparency mode.

"I have not inquired if sport could be moved to drive & theirs on sport (now that would be an awesome combo).


Per their website & other threads read:

Tune Transparency (EZ Flash only, most vehicles supported)

In an effort to integrate our custom tuning with your vehicle as seemlessly as possible, our tunes now include an optional feature called "tune transparency". Modern day vehicles are getting increasingly complex, with communications occurring between many different modules in the vehicle. With our "tune transparency" option enabled, our Trifecta tune will appear to be completely stock to all other modules in the vehicle. This optional feature is provided to allow our customers to choose an additional level of transparency with our products.

[shadycamaro]

Originally Posted by Yohan

As far as tunes go, came across this: http://www.camaro5.com/forums/showthread.php?t=79922

Are the tunes detectable or not? Pretty strong challenge right there. GM seems to be prety tough on tunes, taking hardline against anyone caught with one:(

My prior GM dealership could see my vector motorsports ecm & tcm modify. They didn't void my warranty, b/c they can't unless the tune directly results in the failure. It can be argued either way, but you will certainly loose if the dealership is not on your side from the start. Talk to the service manager you take your car too & find out how mod friendly they are. You'd be surprised

[BubbaSS]

Originally Posted by butters

Wouldn't you want bigger gears for more torque? I believe the A6 is 2.97?

Actually, the bigger the ratio number, the smaller the gear. If you guys are running 3.27, then I would say look into 3.70 and up...4.10's were used in the past to give v6 engines more of a v8 feel.

[Henry G.]

Saw the tune video. Yeah my LFX chirps going into second too, with the TC still turned on. You dont need a supercharger or tune to do that.

[Yohan]

Originally Posted by Henry G.

Saw the tune video. Yeah my LFX chirps going into second too, with the TC still turned on. You dont need a supercharger or tune to do that.

Wonder if A6 chirps as well. Guess a litte test run or two later tonight

what do u think about these tunes? Wish there was something simpler avail for LFX already. Checked those JET power progammers, and something like that seems sufficient.

Wish Trifecta and other reputable companies would offer simpler tunes. For those wanting a bit better mpg, offer a simple mpg tune package. Those looking for better shifting or shiftpoints, offer a shifting package.

[Yohan]

@BubbaSS: im def looking into gearing suggestion. The 3.7 should in theory provide better accelaration/torque feel?

Btw, just saw the Torq website u got ur sct tune from, and its a couple exits from my house. Will check them out as well.