Post your best 1/4 Times and list your mods please. I was just wondering who has had the best time for the 5AT G. I am going to hit the track sometime soon so i was just wondering what sort of 1/4 time i should be expecting. Thanks.

 

14.5 bone stock

 

dont have AT anymore .. but when I had my 03 AT I did 14.3 at 100.1mph, I had stillen airbox, z tube, crawford plenum and borla exchaust.

 

I guess anywhere from 14.3-14.5 is good for bolt on/ stock G's i'll be happy with 14.5 and under

 

Do you have a coupe or sedan? My best so far is 14.6 at 96.5mph.

 

Mod: Z-pipe

Density altitude: ~1,800'

 

I have a Coupe.

 

Ok, I must be doing something wrong, I have only gotten a 14.99 at 96mph once. Every other time its been in the low 15's. Granted its been in the 80's plus, but my time shouldn't be off by that much. I'm in central Alabama btw, so I'm not sure if any difference in altitude is affecting anything. Last time I ran was a week or two ago and that was with the Unlimited Tuning C/f Z Tube and C/F Air Induction System. Was basically the same, best I could squeeze out was a 15.1 =(. Is there some technique that I'm missing. Usually I brake torque to around 2500 rpm and when the last yellow lights (as I was advised to do). Usually I am almost or right at redline on 3rd when I cross the line. Any suggestions would be greatly appreciated!

 

I'm in an 05 Coupe btw. I am lowered on s-techs and running 19x8.5 and 19x9.5 sf challenges, but I don't think that should change anything much.

 

Find out what your track elevation is. Or if you're at a NHRA track you can check this list.

-OR-

You can apply the full correction factors if you know a few details about the weather when you were running.

Here's a very simple calculator that gives you the dyno correction factor. Multiply your trap speed by the hp correction factor number and it'll give you roughly your corrected speed.

To apply it to your E.T. multiply the air density index to your E.T.

http://quarterjr.com/ Click on weather station.

Based on my slips for the last time I ran saying that the absolute barometer that night was 29.24, 78 degrees with 0 humidity you get these numbers.

HP correction factor of 1.051
Air density index of 94.5%

So, last time out, if I ran a 14.87 @ 96.7 mph my corrected numbers would roughly be 14.37 @ 101.63mph. That was on my Mayas, I'm a bit faster on my track set.

Here's a more complicated one that should be more accurate, but you need to know a lot about the atmospheric conditions.

http://wahiduddin.net/calc/calc_cf.htm

Also there is about a .3 second difference between running on my 17" track tires (they are really for autocross and track days, but they work ok at the dragstrip) and my 19" Maya RT5s.

 

Also, remember that correction factors don't always tell the whole story. They just make a good guide.

If your ECU were to retard timing during a particularly hot summer or advance it during the winter the correction factors wouldn't compensate for that. Same thing for tire temperatures, track conditions (slick in the summer, sticky when it's cooler) etc.

 

Times listed in signature and the couple of extremely minor changes. I have recently done the K&N filter but that was after the times listed and I haven't run since the change. Not too much to offer but if you do some searches there are several good threads with launch technique, etc. Good luck and post up those times when you finally go.

 

Trey's wife.... do you brake torque launch? and if you do .... are u in MM mode?

 

First, my name is Cheryl .

To answer your questions 1) sorta and 2) yes.

Now when I say "sorta" let me explain - I pull up to the staging lights and ease up until the first light comes on. Then I switch over to my left foot on the brake and SLOWLY creap up until the second light comes on. When the next to the last yellow light comes on I push the gas a little. When the last yellow light comes on I come off the brake and put the gas to the floor. I don't think that really fits the description of a brake torque launch but it's the closest that I can do at this point.

I do use the manumatic mode (though I must say I don't like it much) and I also turn the VDC off. It has taken me some experimenting to find the "sweet spot" with my manumatic to get the most out of it without hitting the limiter. I keep the pedal to the floor the whole time and watch the tach.