had my dealer change oil today, and he told me the auto is still " learning" how I drive, this is why the shifts are strange....have'nt heard that with this car before...anyone confirm?

had my dealer change oil today, and he told me the auto is still " learning" how I drive, this is why the shifts are strange....have'nt heard that with this car before...anyone confirm?

I cannot confirm for the V as I drive a manual but this was the case and a bit of a curse with my Jeep SRT8.

The problem was during day to day driving the car "learned" be become quite sedate and when I wanted to jump on it, it lagged. This was one of the main reasons I went manual.

hmmm... does jesse have a tune for just the tranny?

Algorithm program in the ECM.

Yes, I have been hearing about car computers "learning" how a car a driven for serveral years now, and I think it is probably true. However, the learning process should not take more than a few miles (maybe a hundred at the most). That would, of course, depend on how the learning program worked. It might take more. Who knows?

no one has been told this by their dealer? I think its bullshit, huh?

Yes, and absolutely hate the learning feature. I have an automatic, and if you try to save some gas, then the next moment the car just becomes lazy. So I constantly switch to manual mode. Even with jesse's tune the automatic drives me crazy. Would have gotten a manual if I wasn't married.

Just wondering if the gas mileage was any better on a manual (less power train loss). Mine never gets over 12mpg. And the car feels boring otherwise. Needs to be driven at 2500+ rpm, otherwise you have no torque. Does a pulley upgrade make the car feel more responsive without sacrificing even more gas?

My 2003 g35 manual coupe feels more responsive at 2000rpms. And it gets 20mpg.

Wow-Mine gets a steady 18 mpg in town with about 60% city streets and 40% freeway. I get on it occasionally, but to average 12 you have to be into the loud pedal all the time. Is that the case? How about resetting your average mpg and try to drive it very conservatively. You should get 17 easy if it is broken in. I have 5500 miles on mine. Half the time I have the tranny in sport mode too.

Wow-Mine gets a steady 18 mpg in town with about 60% city streets and 40% freeway. I get on it occasionally, but to average 12 you have to be into the loud pedal all the time. Is that the case? How about resetting your average mpg and try to drive it very conservatively. You should get 17 easy if it is broken in. I have 5500 miles on mine. Half the time I have the tranny in sport mode too.

I'm not sure how you're doing this, the best I've ever gotten was 18 mpg at 70 mph, 100% highway. If I'm in the city, I'm lucky to get 12. Are you calculating your mileage using the trip computer? I've found it to be accurate about half the time, when comparing it with the calculator method.

Tony

Maybe one of the tuners can chime in here. I'm sure they know a lot more about what's actually going on with these learning parameters.

I know that on the Jeep forums there was a lot of speculation regarding the vehicle break in period and the impact that a "proper" break in would have on the vehicles performance due to "learning". I.e. those who "drove it like they stole it" off the lot would ultimately end up with a more aggressively "learned" car than someone who performed a slow and steady break in. To this end, there were endless discussion regarding how a re-flash would or would not undo the learning that take place during the first 1500 miles or so. If I recall, the net was that a dealer flash would not undo the learning.

Additionally, I was under the impression (at least with the Jeep) that the learning algorithms also impacted the ECM, not just the TCM. Note: I may have my wires crossed on this last statement.

Just wondering if the gas mileage was any better on a manual (less power train loss). Mine never gets over 12mpg. And the car feels boring otherwise. Needs to be driven at 2500+ rpm, otherwise you have no torque. Does a pulley upgrade make the car feel more responsive without sacrificing even more gas?

I think that it safe to say that the manual does get better mileage due to taller gearing perhaps not drivetrain loss. The manual even gets a lower gas guzzler tax (1300 vs. 2600) as a result.

The only reason I mention gearing and not drivetrain loss is due to the fact that I'm seriously starting to suspect that they difference in dyno #s for Auto vs Manual have a lot less to do with driveline efficency and more to do with the gearing itself.

A few years back on the Z06 forums, there were a lot of guys doing A/B dyno tests after changing gears. With exception to those running very high HP turn turbo set ups, the majority were going to a shorter gear to help with acceleration but in almost all cases, they would also dyno my lower numbers at the wheel than they were with the stock gears. Seeing a drop of 30-40 rwhp was not uncommon.

It is already well documented that the Auto has a shorter gear set than the manual and it is hard for me to believe that we'd actually see an almost 10% loss to the wheels just due to the inefficiency of being automatic. Maybe a couple of % but not to the tune of 40-50 rwhp. Just a thought, take it for what it's worth.