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

TLracr

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Dark Emerald Pearl 2000 3.2 TL with Nav, Sebring Mufflers, Sebring Quad Sport Exhaust System, Factory Spoiler, HP Quantum Mirror Tint, 6 Disc Alpine CD changer, 16" 139C Pacer wheels, yokohama 215/55/16s, PIAA 1700x
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http://www.stanford.edu/~sevan9

 

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.

 

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.

 

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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2000 WDP 3.2TL non-NAV

 

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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Just my 2 cents...

 

If you want to race an IS300 get out and run so they will at least have a chance.

 

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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Had 1989 Black CRX Si (Cracker)
Have 1998 Black Currant Accord EX4 Coupe (Watson)
Have 2000 Laguna/Fern TL (Sherlock)