Tips for running a pro tree? - Subaru WRX Forum
 
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post #1 of 10 Old 05-21-2008, 10:51 AM Thread Starter
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Tips for running a pro tree?

Friday I am running for "Midnight Madness." It's like a test and tune, but it's the street scene at the track. Well, I just found out that they use a pro tree and I've never run a pro tree before. Any tips on when to launch, cause I think they all light up at the same time. I've been launching on a regular tree on the second yellow and that gets me a pretty decent reaction time, my best was .57. Any ideas?

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post #2 of 10 Old 05-21-2008, 11:38 AM
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really on a pro tree you just have to be good thats what we use at the track i go to, a pro tree will be ran off a .400 reaction time for HNRA, all i can say is right after you have turned on your stage light bring up your RPM's and be ready.
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post #3 of 10 Old 05-21-2008, 02:46 PM Thread Starter
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OK thanks. I'll let everyone know what my times are. Wish me luck.

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post #4 of 10 Old 05-21-2008, 03:10 PM
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good luck!!!!!
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post #5 of 10 Old 05-21-2008, 03:15 PM
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Ya know, i've never run on a track before, but what i do is rev up the car to whatever you usually do, and pull the clutch out ever so lightly until you feel it starting to engage, and then push it back in a little, and then launch whenever it hts green or whatever, then you'll have a better reaction time for launching because your clutch travel until engaging will be practically squat. Anyways, good luck!

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post #6 of 10 Old 05-21-2008, 03:52 PM Thread Starter
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You know, that just may work, I'm gonna go practice tonight, don't want to look like a fool at the track when I try it and STALL.

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post #7 of 10 Old 05-21-2008, 05:44 PM
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Haha, good luck with that style, it doesn't work for my Jetta becasue my powerband is at 4k rpms, so whenever i do this style of launching, it chirps the tires and then takes 4ever to get into 4k rpms... Kindof like a Honda... But something with a lot of low-end torque (even though my Jetta has 160+ ft-lbs) it will be a lot more efficient. Such as the WRX, it should work pretty nicely.

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post #8 of 10 Old 05-21-2008, 06:05 PM
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just hammer down and go lol
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post #9 of 10 Old 05-25-2008, 11:34 AM Thread Starter
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It wasn't even a pro tree! It said pro tree in the program, but it was the same 123 tree that I have been running on. Anyways, niether myself nor my husband did all that great. We can't figure it out though. It was a little humid and it was only in the 40s, but I thought that out cars ran better in cool weather. Anyways, here are my times:
1st run: RT= 0.5041 , 60ft= 2.73, 1/4=16.08
2nd run: RT=0.728, 60ft 2.80 1/4= 16.04
3rd run (me against my husband's GTO, 1st time ever)=
His: Mine:
RT= .737 .598
60ft= 2.15 2.45
1/4= 14.56 15.50 ( Beat me by less than a second!)
MPH = 97.23 89.43

4th run= RT=.824, 60ft= 2.48, 1/4= 15.57
5th run= RT=.691, 60ft= 2.31, 1/4= 15.25 (my best time that night)

I can't seem to get my 60ft times down, it seems as though my launch is good because I'm getting good reaction times, but maybe I'm riding the clutch a little too long? I didn't even beat my best time ( 2 months ago it was a 15.02). I know it's capable of breaking 15 seconds.

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post #10 of 10 Old 06-01-2008, 07:41 PM
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Launching My Wrx

Ignore the first section of the post talking about transmission codes. One problem you have with the 04 is the 60/40 power split. Dunno why Subaru did that but it was the only year they did.

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