Faster Acceleration

[G-Forces]

Oh yeah which brings up another point. Oil filters. Please tell me everyone here uses either the standard Nissan/Infiniti filter or a Mobil filter. They have a drain back valve standard and some of the cheeper brands *cough*fram*cough* don't, and that could effect the longevity of your motor. I know they cost more but please...it's your motor we're talking about.

[primera2.0GT]

[quote]Originally posted by enzo@af
[b]Mash on it. Or, if you want to possibly break some stuff, and if your car will allow you to do it, rev it up while in neutral, then quickly shift into drive, or first. Not the smartest thing to do, but hey...I've seen it work*





hehe i did that wheni used to drag my old 86 sentra auto... it worked... untill i had to get a whole new tranny, aiya!

[kenchan]

yeh, the fastest way to get up to speed on an AT is to rev the engine up to about 2k-2.5k with your left foot on the brake. as the light turns green you need to time your right foot to the floor exactly as you let off the brake. you want slight wheel spin. leave the gear in D, let the AT shift up on its own. donno about OD, it doesn't seem to make any difference on 1-3 gears. (could be wrong as shift mapping does seem to change).

a lot of MT drivers suck at shifting (not that I'm saying that any of you here suck ) and found that AT sometimes accelerate faster than MT. gahahahaha!!! to you bog shifters. gahahaha!!!

..but again, the AT on our P11 is very sloppy compared to other AT's Ive driven. if you wanna drag, get a MT and learn how to shift. getting a AT looses about 20hp to the wheels just from that.

[JustinP10]

Hmm.... interesting topic... I've owned both an automatic G20 and a 5-spd G20 (current car)... The auto is slower off the line, but I could get better reaction times... G-tech testing showed that just mashing the gas is the best off the line (instantaneous G's measured by passenger), and the O/D didn't make a difference, and the shifter button (power/touring I think) didn't make a difference, if your foot was down, it'd go all the way to redline I also noticed on both cars, a good way to increase throttle response is to tighten up the throttle cable as tight as it'll go (with a little slack so it's not holding the throttle open of course). that makes a big difference in off the line feel of the auto and my shifting on the 5-spd too. With the cable tightened all the way, ripping gears is much easier (ACT clutch helps alot too ). BTW, I never really did an auto vs. 5-spd 0-60 or 1/4mi. comparison... BUT... I know my 5-spd is quicker off the line and it feels quite a bit faster in first. However, once into second it's even money, except for maybe the weight difference between the auto and 5-spd cars... 80lbs i think?

Wow, that was long

[kenchan]

yeh, auto's tend to loose within the first 1sec of the drag race. one would probably need to get a bigger faster motor if they wanna keep dragging with an AT.

also, unless you wanna get a cheep alternative to a universal muffler to get sound and looks, keep your stock muffler. my arospeed muffler looks and sounds good, but that 0-10mph acceleration is very sluggish now. no backpressure.

[Koojo]

Originally posted by JustinP10
[BI also noticed on both cars, a good way to increase throttle response is to tighten up the throttle cable as tight as it'll go (with a little slack so it's not holding the throttle open of course). that makes a big difference in off the line feel of the auto and my shifting on the 5-spd too. With the cable tightened all the way, ripping gears is much easier (ACT clutch helps alot too
Wow, that was long [/b]

So if I tightened the cable it would be bad for the tranny since it would rip the gears?? How do I go about tightening the throttle cable, because when I push on it, it does feel a little loose.

[JustinP10]

Originally posted by Koojo


So if I tightened the cable it would be bad for the tranny since it would rip the gears?? How do I go about tightening the throttle cable, because when I push on it, it does feel a little loose.

On my car, you adjust it right between the throttle body and the Valve cover on the driver's side (LHD). there are two bolts that are on either side of a bracket. you can losen em up, then twist em both in the same direction (to tighten up the cable), then tighten them back up real good, don't want it slipping. I notice that with my 5-spd G20, when i shift real hard, at the drag strip, or anywhere for that matter, the shifts are harder when i have that cable tighened. Oh yeah, on my car, it's the cable closer to the TB, the lower one is the cruise control, i havn't messed with that one yet, don't think it's necessary either, not for performance at least.

My theory on the cable is that the throttle body opens faster because there is less slack in the cable, therefore when you push the pedal, the throttle body opens almost exactly the same time, instead of waiting until all the slack is tightened up, then opening... if that makes sense. I'm not sure how this could be bad on the tranny, other than the obvious, your ripping on the gears... that's stress on the tranny. Oh yeah, if you were to tighten the cable too much, your car would idle high, among other things, and I'm not sure how that would affect everything?

[Jay Z 4885]

first mashing the trottle will only make the auto shift in first at 5000 rpm but if you slowly and linearly hold the gas and play around to find the sweet spot you will get the engine to rev near 7000 redline maybe about 200 short. Either it hurts the engine though to neutral drop it (put in neutral and rev the engine and then switch to drive) but that hurts the drivetrain alot. the other way is to brake gas it like everyone says. it will not hurt the engine as much because just like the manual the auto engages the clutch when you press the brake or else your engine will break so the brake gas is just like the manual. Also the overdrive is the fourth gear. Because the fourth gear is less than a 1 to 1 ratio with the final gear ratio. That means in fourth gear the engine will rev alot lower increasing the gas milage but slower acceleration. If you look the first, second, and third gears are all larger than 1. Pushing the overdrive just puts the gearing from fourth to third thus the reason why the car revs alot more

[kenchan]

kinda forgot bout dragracing with this car and thought about better things...like how to turn off the damn service engine light...

[primera man]

This service lights gonna cause you to start drinking and going insane

[kenchan]

have already begun to sniff exhaust fumes... ahhhhhh!!!:silly2:

i FEEEEL GOOOD!:smoker2:

[kenchan]

i tried both ways just now, power braking to 2k rpm and not before launching. the powerbrake does pickup more speed off the line no doubt. man, I should turbo charge my G too, then it wont be a sisssy car. hummm... gonna get flamed, I know it.

[Koojo]

Originally posted by kenchan
the powerbrake does pickup more speed off the line no doubt.

yes it does pick up more power. The best way is to make sure that you press on the gas pedal as you let go off the brake, so you will have that full burst of power. I dont use it much, just sometimes if I want to beat some car thats next to me at a redlight, or to show off to some people standing on the sidewalk...:smoka:

[kenchan]

yeh, I use it often (more in 1.5k rpm area) when I wanna make quick lefthand turns at an intersection from a standstill. otherwise this AT just bogs up so much torque that it's a shame. :o

you ever notice dat the AT shift knob has some play on the shift button and on the shifter itself? wish there was a shift knob that would eliminate the play. i noticed it on the other AT P11's too. if we can rid this slop, it'd be more fun to drive it around while manually holding the gears.

wonder if the new celica's shiftknob fits on our cars...

[Koojo]

Originally posted by kenchan
you ever notice dat the AT shift knob has some play on the shift button and on the shifter itself? wish there was a shift knob that would eliminate the play. i noticed it on the other AT P11's too. if we can rid this slop, it'd be more fun to drive it around while manually holding the gears.

I havent really noticed that much play in my shift know for some reason