1/4 Mile Help

[marcman804]

okay ive been to the track a few times and im really starting to get frustrated with my car. All i want to do right now is run a 13. So far ive been able to run a damn 14.0 but thats my best, one of my time slips are posted below, the others seem to have been deleted off of here but maybe somebody can help me by looking at this one. I think i have a few different problems. The first problem i have is that right when i get to the finish i have to shift into 4th gear (at around 106mph) and i think thats huring me. I was wondering if i shifted earlier into 4th would it hurt me or help me. One of my friends looked at my timeslips and noticed from 1000ft mark to the end of the 1/4 (another 320ft) it took me another two seconds to reach that point, so does that mean Im running out of steam in higher rpm's? any suggestions would greatly be appreciated. I know i need to be tuned, im running 12psi on an evo 16g. i eventually would like to reach 12s but right now im just trying to break 13s and on one of my runs i trapped at 107 which should at least be a 13 second run but this damn front wheel drive is ridiculous.

http://www.dsmtuners.com/gallery/files/4/7/6/1/0/14.43103.JPG

 

[SOADweskey]

I would guess traction is you biggest problem, I have been able to run a 13.2 at only 101mph. As for you shifting I am in the same boat, My car seems to loose power after 6500 so I have been trying to shift earlier as I was shifting at 7k.

I would say that some good front tires either drag radials or slicks and you will see 13s or faster judging by you trap speeds.

In addition to better tires a dual stage boost controller setup may help you out a lot. You can make your own cheaply by using a regular mbc and a solenoid to switch between running on the mbc or looping straight to the waste gate actuator.

 

[marcman804]

Thanks for the info. so did you notice a difference when you shifted earlier.

 

[SOADweskey]

I went slower when I shifter earlier. But I think it had a lot to do with my shifts as they could be faster. I need more track time to play around more but our last two street legals were canceled because of rain. I'm also right on the edge with my trap speed because my run shown in my profile was left in third and I bounced rev limiter at the line. The next time I'm getting on a track is in March and I will hopefully have a tune sorted out that makes leaving it in third impossible.

 

[marcman804]

yeah thats my problem, i havent gotten the funds up enough to buy some tuning equipment. after you tune it for third, will it still bounce off the rev limiter

 

[SOADweskey]

My hope is that I can get my car tuned well enough that I will put down enough power to trap over 105 and then I will need to shift into fourth because with the GSX gearing 101 is right at 7500 rpm. I actually had to raise my rev limiter to 7750 and that scares me because I have the stock valve train still.

I would say that you really need to focus on traction first and then try to sort out all the smaller stuff. Just get as many runs as you can and try different things. If you can get you 60's down under 2.0s you will be much happier with your E.T.s

 

[JOEY A]

Your car isnt tuned, and you dont have supporting mods.....Post up your mod list for all to see for more help

 

[JOEY A]

LSD is a MUST HAVE!

 

[marcman804]

yeah i really want an lsd but im going to work on the suspension first, and its hard to mod this car and drive it everyday because as soon as i get enough money to improve i have to replace something. my mod list is in my profile

 

[daren_p]

Best advice would be to swap your fwd to an awd (Im allowed to say this as I have to suffer fwd traction issues as well ). More then likely if you just got your 60 ft down abit, that would be the little bit you need. What was your 60 on the 14.0 run? My first time at the track I was able to manage a 13.9 out of the evoIII at 106.2 mph. So looks like you have the mph, just have to work on the launch/traction. I believe my 60 was 2.3 something when I ran that time. I too have to shift into fourth, which doesn't help your time either. More then likely your running out of steam if your going right to 7500 in third, so it may be better to shift abit earlier, say around 7000. Play around with this abit & see what works best for you. Other then whats been mentioned work on your traction mods, good tires, urthane motor mounts, lowering springs (stiff rears), adjustable shocks, LSD, etc. all help get the 60 down. The easiest method would be to swap the street tires to drag radials or slicks, which should make the biggest difference in the traction department.

 

[STI2TALON]

You certainly have the trap speed to run 13s, youre losing it on the launch and making up for it down the track