anyone know....

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Old 11-07-2000, 02:56 AM
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Post anyone know....

why ppl choose to use d4 and not d3 or d5 when racing?

TLracr

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Old 11-07-2000, 03:00 AM
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D5 is a tall gear and it will bog you down limiting your top speed. D4 will allow you to achieve top speed while D3 may limit your speed depending on where you redline.

It all matters what speed you race to. I am actually not sure what speed D3 redlines at. This is what I think, but I might be off base so please correct me if I am wrong.
Old 11-07-2000, 08:49 AM
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I used D5 the last time I went to the track. My top speed I got to was 89.xx

That was with some tire slippage in the launch plus totally stock setup.

Just for your info.
Old 11-07-2000, 09:16 AM
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It doesn't matter if you put it in D3, D4 or D5. Those positions only limit the gear that the transmission will shift to. D3 will start you out in first, shift to second, shift to third then not let the transmission shift any higher. Ditto for D4 and D5. I'm talking 2000's and 2001's here: If you're doing 90 through the traps, you're not even at redline in third gear, so it doesn't matter if you run the quarter mile in D3, D4 or D5. There will not be any differences in quarter mile times between the three selections.

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Old 11-07-2000, 09:28 AM
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It is useful if you want to keep the tranny in a particular gear and not fiddle around with the SS...
You are at a red light and IS300 wants to race put it in D3 and floor it goes up to 90mph... then again with IS300 you don't have to bother... you'll eat it either way
I put it in D3 or D4 when I want to make sure I don't go to upper gear...

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Old 11-08-2000, 04:56 AM
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If you want to race an IS300 get out and run so they will at least have a chance.
Old 11-08-2000, 09:02 AM
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just as a kinda sidebar FYI, the tranny starts in 2nd gear when in Auto, only if you step on it will it back down to 1st to take off quickly. MB's do it too.

Of course in SS it's in 1st from the get-go.

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