auto rev matching

[Poppacapp]

This might be a dumb question, but does the car shift itself in Sport mode on the automatic? Is that what you're saying? You just get higher shiftpoints? Or are you saying, it will only shift when it realizes you're screwing up and not shifting?

I honestly haven't gotten around to using Sport mode yet.

Yes, it will shift itself in sport mode until you touch the paddles. then you are in manual mode. Easily fixable by moving shifter back to D, and into S again.

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[Poppacapp]

Until the extra heat load dumped into the coolant (from cooling the AT fluid) causes the ECU to pull timing, maybe.


Norm

Yeah, I can see that being an issue. I assume for road course duty, you would need much better transmission cooler setup.

 

[VNMOUS1]

I am interested in hearing some feedback from someone with an auto who goes to a road course, and uses the paddles like a manual. Would be nice to have a video. I am sure the autos can perform just as well on a road course as the manuals.

I just had my Eco base auto at Sebring a couple of weekends ago. Sport mode and using the paddles for 3 and 4, which is all you'll use at Sebring in that car.

It actually did very well just letting it shift and downshift on its own, too. Trans temps never got out of hand, even in a 20 minute session.

The only "pulling timing" issue on Eco's is flange temp, not high IAT2s. I use a Levels Performance intercooler and it makes a boatload of difference.

bj

 

[Old 5 Oh]

Yes, it will shift itself in sport mode until you touch the paddles. then you are in manual mode. Easily fixable by moving shifter back to D, and into S again.

Exactly correct, and one of the few quibbles I have. I wish the trans had a "M" position, so I could alternate between auto and manual shifting in Sport mode without cycling through D.

If I were king, the shift sequence would be PRNDSM.

 

[Poppacapp]

I just had my Eco base auto at Sebring a couple of weekends ago. Sport mode and using the paddles for 3 and 4, which is all you'll use at Sebring in that car.

It actually did very well just letting it shift and downshift on its own, too. Trans temps never got out of hand, even in a 20 minute session.

The only "pulling timing" issue on Eco's is flange temp, not high IAT2s. I use a Levels Performance intercooler and it makes a boatload of difference.

bj

Thanks for the info BJ!

 

[krahooligan]

Just a question, why would you not want it to rev match?

 

[Poppacapp]

Just a question, why would you not want it to rev match?

Just driving normal, it can get annoying, plus the sport mode is more aggressive on its up/down shifting. upshift is much higher in rpm range, and if you are cruising at say 45mph, it won't go into high gear.

 

[RemoteSenses]

Just driving normal, it can get annoying, plus the sport mode is more aggressive on its up/down shifting. upshift is much higher in rpm range, and if you are cruising at say 45mph, it won't go into high gear.

Tried it out today and noticed this.

Wouldn't recommend unless you're actually using the paddles, otherwise you might as well just keep it in D.

 

[Raoh]

Tried it out today and noticed this.

Wouldn't recommend unless you're actually using the paddles, otherwise you might as well just keep it in D.

I think I am going to use the paddles every day for like 2 months, and then get lazy and actually manually shift once in a blue moon. When I first got my tiptronic audi, that's what happened lol.

 

[Norm Peterson]

Just a question, why would you not want it to rev match?

Probably because it's a little different from the way automatics have always worked before. When you slow down for a turn, even for a tight Interstate on-ramp, an AT typically does not downshift until the driver gets past the curvy part and starts accelerating.

The average AT driver does not manually command a downshift on corner entry, preferring to simply cruise around the turn with no more throttle than it takes to maintain minimum speed. The transmission hardly ever needs to do anything here, so it doesn't do anything.

The concept of rev-matching a manually commanded AT downshift is yet another step beyond that, and I doubt that it has ever occurred to more than maybe 1 driver in 100,000 to even try to do their own AT rev-matching (yes, this can be done, at least sort-of). But when rev matching is provided by the mfr, it's going to feel enough different that it'd be hard to not notice.


Norm

 

[Old 5 Oh]

Tried it out today and noticed this.

Wouldn't recommend unless you're actually using the paddles, otherwise you might as well just keep it in D.

Around town you are correct. On a winding back road, Sport works really well and is amazingly smart about what gear to be in.

I leave my car in D most of the time, but S is fun to play with.

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