Want a faster Gear shift?

Replies to This Discussion

Permalink Reply by Logan J on October 15, 2008 at 7:50pm

When I got my ECU tuned I noticed quicker and smoother shipping. I do hope however someone figures out how to get a turbo in there :-)

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Permalink Reply by Lourdes on October 16, 2008 at 11:41pm

I find the car shifts quicker with the install of my new exhaust. It is very loud, though.
There is still a lag from 1st-2nd but the other gears are much snappier.
The extra 5whp and 14ft-lb of torque is not a seat of the pants THRUST, but at least shifting has improved 30-50%. This is something you may want to look into and good luck with the turbo : )

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Permalink Reply by 451 Kahn on October 15, 2008 at 8:24pm

Remap made my car shift faster.

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Permalink Reply by Carlos on October 20, 2008 at 6:41pm

In the 450 the shifting is programmed into the ECU, but in the 451, the shifting is a seperate "shiftbox" That is why the tuningcompany's in Holland/France/Germany etc do not claim a faster shifting. Thet only do that at the 450.

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Permalink Reply by Ian Pellant on October 16, 2008 at 12:02am

Hi Andrew,

Do you have the softouch option on your turbo pulse?

I'm finding that the auto program change points are vastly different to the manual shift prompts. The notable differences are:
First gear in Auto mode can stick and hold until red line under rapid acceleration. 0 to 60 kph with a blast of revs. This is sometimes more aggressive a get-away than intended.
Gently accelerate in Auto and it will shift at around 3,500 rpm. Ease off the accelerator a touch and softouch shifts up very smoothly.
In manual in fourth, the shift up pormpt will appear at 60 kph... change gear and it lugs at around 1740 rpm. In Auto, it won't change into fifth until around 80 kph.

On top of the different shift programming, I'd almost swear that the softouch Auto program is changing the shift points as the engine breaks in. It is almost as if softouch has been programmed for more aggressive driving than the manual shift points have been. On the twisty hill climb roads, softouch does a remarkably good job of shifting up and down between third and fourth when climbing and descending... almost like it double de-clutches down shifts when rolling into a bend.

If we could get the tranny reprogrammed; what would you like to see? (Me: I'm not sure... still being trained by m.smart how to drive.)

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Permalink Reply by andrewd on October 16, 2008 at 3:54am

yeah i have it all soft touch etc... i rarley use the auto mode as it's not suited to my driving style

what i'd like to see though is gear changes that are as quick as a real manual change and not 1 second + also some more rpm for hard launches, the rest can be tuned through the ecu, like the way the car continues to rev even though you have lifted off also i dont want the transmission to change up a gear when in manual mode...

and lots more cant think now

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Permalink Reply by BigPerformance on October 16, 2008 at 4:49am

A remap of the engine ECU will NOT speed up the gearchange.
You have to remap the gearbox ECU to do that.

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Permalink Reply by Carlos on October 20, 2008 at 6:42pm

100% correct

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Permalink Reply by Ron M. Kolman on October 16, 2008 at 1:46pm

Last week I placed an order for my smart. While doing so, I was told about a black/black Passion coupe that was traded back to the dealer when it's owner selected a NEW smart from the "seconadry" list. With 3,500 miles on it, and looking absolutely new, I bought it. When my fully customized smart arrives in two years (smile) , I'll see what I can get for my "high-demand" passion.

Driving now for a week (was so jazzed on test drive I couldn't concentrate on a thing other than was driving a smart), I am truly unhappy with the 'dead-spot' between gears in auto. The car is designed well enough so that a smart owner should not have to suffer a sluggish tranny to own a smart. In 'manual', I have learned to get the smoothest gear change with precision shifts at particular rpms. Maybe just me but the "quirky-transmission" detracts from the entire driving experience...enough to make me question If I'm suffering through a driving experience just to drive my long awaited smart (by Mercedes - engine by Mitsubishi).
Smart seems to have Microsoft's marketing sense on the issue: "It's not a 'bug'...it's a FEATURE.
Any others question their selection...really unhappy?

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Permalink Reply by SubSlr88 on October 16, 2008 at 5:20pm

""Any others question their selection...really unhappy?"

Nope - the transmission is what it is - an automated manual with an electric clutch and computer control. To make it shift better in auto just keep the throttle pressed down; don't jiggle it up and down or try to anticipate the shift.
My first two weeks I stayed in manual mode and my first tank gas mileage was horrible. I learned to shift it OK, but had a tendancy to keep the rpm's up. I was doing 35 mph in 4th gear and not shifting there until I had reached 35.
These past two tanks I've used nothing but auto mode. It shifts into 5th gear around 35mph - sometimes it feels like its lugging but a slight grade will kick it back down to 4th. The gas mileage has gone up nearly 10mpg. And most of my driving is 35 - 50 mph, so by forcing it to stay in manual I was eating up lots of gas.
It's not really a dead spot between gears - it's the clutch disengaging, tranny shifting and then clutch reengaging again. It all takes time to do. If you were doing it with an actual clutch, you'd probably take even longer.
Have patience and accept it for what it is - with time you'll grow accustomed to how it works and enjoy it all the more. And it will become smoother . . .

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Permalink Reply by jackb on October 16, 2008 at 7:22pm

While I am not unhappy with my smart or my purchase decision (other than when I first bought it and occasionally needed to move NOW to avoid a nasty situation, and the car dithered in auto mode trying to decide what gear to use), I understand Ron's frustration. It does not take me that long to execute a manual shift with a clutch and regular manual transmission. In fact, it does not take that long for many automated manuals to shift. The smart's notorious lag between 1st and 2nd is a consequence of cost control. There are high end units produced by Getrag and ZF that will snap off that same shift faster than you can blink. But...they cost money...and that would kill smart's price points. So I have learned the car's lesson: Read the road, anticipate what's about to happen, know what you're going to do, and be on top of what's going on. In that sense, it is a driver's car, and I have become a better driver because of it. As for the shift characteristics, we get what we pay for....

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Permalink Reply by Ron M. Kolman on October 18, 2008 at 1:03am

Thanks for your response "jackb". let me be candid, hopefully without offending any other smart owners. Jackb, you begin respond with "while I am not unhappy with my smart purchase...". "Not unhappy", is a benign condition. It sounds as if you COULD be happier with your new car. I understand (SubSir88's thought) if 'you chose the smart, it's (the lag) inherent in the vehicle, you'll become accustomed'. I'm trying to get accustomed to a feature of my new smart I really don't like. In marriage we might adore our mate but could, if pressed, identify a change here or there we wouldn't mind. These cars aren't people that have characteristics you need to accept.

As pointed out, the lag in theb tranny is a "cost control" item. Smart could have fixed that irritating 'lag', but wanted to see the car's cost fall in 'reasonable' price range. This simply rankles my ass. I didn't get an opportunity for an upgraded transmission that would NOT lag.

And yes, on my test drive I felt the awkward lag...but was just to dazzled to understand the consequences of the "hurry up and move NOW' frustration jackb references. The Honda 600 (1972), Honda's 1st US release, ran quick (2cyls?). In the 90s I borrowed a friends Chevy GEO rag top. A 4 speed again and 3 (?) cylinders that hummed around just beautifully. POINT: Small cars can be made to shift with ease. Why could/would smart with a killer little car, and a comfortable cabin, not go all the way to finish-up with a comfortable/fun driving experience? I'm giving the car a bit of time, will "have patience and (try to) accept it for what it is", and see if that lag stops wearing on my nerves. Interestingly, in a conversation with a smart owner who fumed about his 'lag', it was suggested the lag is potentially dangerous (interesting). In certain traffic situations you need to rely on your vehicle's ability to sync with your intuitive reactions. Smart asks it's owners to compensate for an unusual performance dynamic with a toss-away, "It has a unique shifting style but everyone gets used to it". There is a choice? I suppose love is blind. Sorry for the long post. You've all been great responding with various thoughts on this matter. Thanks. Ron.

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