Quote:
Originally Posted by Dustya
JACFAB is modified and tuned. There are so many variables going into this ... Temperatures elevation humidity driver wheel spin also remember there is a diff between the auto and manual that the auto timer starts the second your RPM move so you cannot launch properly.
You can also go downhill. and get a better time LOL so so so many variables.
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Very true, lots of variables... I get my fastest times in the morning with the temp is 50-60 degrees, in the afternoon when its in the 90s-100s it can typically be .3-.5 slower,
Ever since the discovery of the timer reset trick, I've been getting more accurate times on the dash timer, but it's gotta be right on when you reset... do it too late and the timer doesn't even start, do it too early, timer still starts before you start moving. perfecting the reset trick, I'm shaving .2-.3 off the dash timers inherit false readings. Granted still not perfect, My 4.0 dash timer run is something like 3.91 in HP tuners logs, but using the reset trick its pretty close.
Also gotta remember, I have my race wheels on, 17x4.5" skinnies in the front and 18x9.5 w/ sticky tires in the rear. These wheels are appx 75lbs lighter than the 20" wheels, and the old theory is that for every lb of rotational mass removed, it's like taking 3 lbs off, so in theory, that's like 225lbs removed off the car. Also, have done an LSD diff swap, so that really helped with traction.
Obviously tuned, running 24-26 peak boost, and normally in the 22-24 range when off peak at WOT. I've been doing nothing but street tuning this thing for something like 2 months. I make 3-4 pulls in the morning, and 3-4 on the way home every day, while making changes in the tune before each trip. I've got the transmission shifting stupid fast...
It's not just a stock 4 banger
