Drag Strip Trip - Subaru WRX Forum
 
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#1 Old 05-20-2009, 04:24 PM
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Drag Strip Trip

First off let me say that I live over an hour away from the closet drag strip. I went last friday to see what kind of times i would make.

mods are:
TBE
Accessport
38mm Tial External Wastegate
forge mbc and gfb bov.....both were tuned for and the mbc wasn't touched after the tune
Protune making 248awhp and 258awtq on a dynojet dyno
mods after tune:
short ram spt intake
13lb flywheel with stock replacement clutch

my times were as follows:
r/t .936
60' 1.873
1/8th 8.623
MPH 80.12
1/4 13.507
MPH 99.94


i think I have some sort of boost leak and i was disappointed with my times.

the staging light was awful though, as soon as you staged, there were no yellows, just straight to green.

any tips to run better times? Does this look like boost leak?
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#2 Old 05-20-2009, 04:29 PM
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Is this your first time taking your subie down the 1/4 mile? Thats really not a bad time at all. Seems like you just need to get your 60ft down some. Good time IMHO.

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#3 Old 05-20-2009, 04:32 PM
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it seems like you are tapering off in the higher gears...your 1/8th mile time is right in line with the mods you have...and practice launching on the tree...a good reaction time is the first step in having a good pass

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#4 Old 05-20-2009, 07:46 PM
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Practice makes perfect. practice practice practice practice. And reaction time has nothing to do with making a good pass. Just concentrate on launching and driving, pay no attention to the tree if all you are trying to do is get is good times....now if you are racing someone, well then pay attention to the tree.

12.7 @ 109
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#5 Old 05-20-2009, 08:32 PM
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13.5 is about what I'd expect from a 248whp on a dynojet EJ205 powered subaru. I'm sure if you weighed 80 lbs and drove it perfectly you could get it close to 13 but who cares. BTW, that lightened flywheel is probably costing you about .2 seconds or more.
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#6 Old 05-20-2009, 08:34 PM
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mosc, just a question, Why would a lightened flywheel cost him time?

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#7 Old 05-20-2009, 08:37 PM
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Because the lighter the flywheel, the less load you can drop down. Especially on the torque impaired EJ205, that makes a big difference off the line. Also into second since the gears are fairly tall it helps if you can slip the clutch a little. Again harder to do on the lighter flywheel. Flywheels store energy. If you're running around a track at higher RPMs and never really coming to a stop, lighter is helpful since it gets it into revs faster. If you're at a dead stop trying to get into boost, heavier is actually better because you can spin more mass.
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#8 Old 05-20-2009, 08:40 PM
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but isn't the stock 22lbs. just a little bit too heavy?? I would think you would have a benefit if you put in something like a 17lb. flywheel

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#9 Old 05-25-2009, 12:02 PM
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if you launch the car harder you will prob be able to get into the high 12's, I ran a 12.84 with my 2.0 and TBE and intake and protune and my best 60ft was a 1.59, I was launching the car as hard as it could go as well with 18psi tire pressure
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#10 Old 05-25-2009, 12:23 PM
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i have yet to bogg or stall a launch with my new flywheel, i launch about 1k higher than i did before.


after looking further into my issue, i did have a boost leak, now the boost leak is fixed and i am excited to go back to the track soon
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