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      08-25-2008, 05:51 PM   #23
subscience
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Quote:
Originally Posted by mistermojorizin View Post
also, as to using 5th gear for 60-100 blasts - I have an escort g-timer which can measure acceleration g-forces (it's like a computerized butt dyno). in the 60-100 range, the g-timer reads acceleration g's of almost 2wice as much in 3rd gear as opposed to 5th gear. Its something like .17g of pull in 5th and .33g of pull in 3rd.

4th pulls at about .25g.
Great info. Thanks!

Edit- Tried it out tonight and wow. I'm a newbie to MTs, so I've never considered skipping gears down, but the difference in acceleration is quite noticeable. I went 6->4 and it felt like the car pulled noticeably harder than 5th.
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      08-25-2008, 09:27 PM   #24
plien69
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Quote:
Originally Posted by CBLW View Post
I still want to know if anyone else with an American automatic 135i has a "kick down" button. I don't see mine.
There's no actual button on the floor. It's built into the throttle pedal assembly; you can't see the actual button.

Test it out when the car is off: Press the pedal all the way down until you feel the first point of resistance. Then press more, and the pedal "clicks" past the point of resistance. That's the kickdown button.
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      08-25-2008, 09:55 PM   #25
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Quote:
Originally Posted by gargoyal View Post
note my warning on my previous post.

Warning: this post is based on butt dyno results, so take it with a grain of salt.”

It is very possible, but I don’t think so. the rpms more right away when I push at the gas with the "right" level of force. when I floor it it seem to wait before reacting.
My guess is that you are smoothing out the "lag" that is inherent in ANY turbo'd car. I don't believe there is a such thing as a lag-less powerplant. It's a characteristic of the mechanics of the power generation.

When you floor it, it's going to take some time (could be a fraction of a second, to maybe a couple of seconds on larger turbos) for the exhaust gases to build enough spooling to get the positive-reinforcement reaction going. By flooring the throttle gradually, you're also building the boost more linearly, as opposed to when mashing the pedal to the floor. I hope that makes sense.

Disclaimer: I'm not an engineer, but this is what my pea-brain thinks is what's going on.
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      08-25-2008, 10:03 PM   #26
Iliveforthis
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on the 135i coupe automatic transmission, if you add sport package on the site, it automatically adds paddle shifters. if you have steptronic and paddle shifters, can you still use the manual shift mode on the console? kinda a noob question sry just wondering
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      08-25-2008, 10:14 PM   #27
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^^^ Yes.
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      08-25-2008, 10:15 PM   #28
Iliveforthis
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thanks man
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      08-29-2008, 11:48 PM   #29
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The best way to gun it from 60-100 with STEP is to cruise in 5th to conserve on gas and when you get to an opening, DOUBLE-TAP downshift to 3rd while SIMULTANEOUSLY mashing the throttle. It will throw you back into your seat.
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