Last summer I went to the drag strip with a stock 2004 WRX and couldn't break into 15's even. I was stuck at 16's. I shifted about 6500 all gears.
Now I'm stage 2 and planning on going again when drag season comes.
I'm getting a lot better at launching now.
This is what I've been doing at Cobb stage 1 (91 oct):
- rev to 4000 rpm
- wide open throttle
- feather the clutch (holding it at friction point for .7 seconds)
- release clutch smoothly all the way
I feel I got some pretty good launches this way, but no real data.
At stage 2, I've tried the same thing but it just spins out now. I guess it's a lot more power from stage 1. Any advice?
Also, a BIG QUESTION I've got:
To build boost for launching, is it best to bounce the needle with throttle pumping, or is my current method of holding at 4K and then WOT good enough? It's all I'm used to, and now I'm reading people saying to bounce the rpm.
I know shift points are different for every 2004 WRX since no car is the same, but roughly what are the best shift points for the best 1/4 ET?
Some people say to shift before redline at ## gear because of the power band.
Some people say to shift at redline to fall back into the ideal torque range of the next gear.
Anyone with some good knowledge or real world experience have any tips on this?