The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Please Support ExtremePSI
Please Support ExtremePSI

Any tips?

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

streetdsmpwr

10+ Year Contributor
322
3
Oct 13, 2009
Canton, Michigan
I just ran four passes at Maple Grove Raceway last Friday and had a great time but the best I could out was a [email protected] with a 60' time of 2.204. This was my first time ever to a drag strip and my first passes ever and in this car. As you can see by my profile I don't have too many serious mods yet, but I was hoping to run 14's. I know that that 60' time needs improvement and I was wondering if anyone has any tips for launching the car. It felt pretty good every time I launched it but I feel that I was in 1st for too long and I didn't get to 4th at all, I almost was hitting redline in 3rd at the end of the track. Any input is appreciated.
 
We need more information.
What RPM were you launching at? Were you losing traction/spinning at all? Tire pressure?
At what RPM were you shifting in each gear?
What boost are you running? Still on the t-25?

You need to make more then 4 passes, especially if this is your first time at the track. Make small changes, one thing at a time so you can see what's working for you.

Your 60' should be better since your AWD but it's not horrible. I'd be happy with a 2.2 but I'm FWD.

Also I'm guessing that your FMIC/T-25 combo is hurting your performance. There was another thread about this same thing last week and they guy also had a FMIC with a T-25. What spark plugs are you using?

Get back to us with more info and we will see what we can do to help.
 
-I launched at 5000 rpm's, but I was focusing a little too much on the tree to know exactly what I launched at each time, next time I won't focus on the tree as much
-I was not spinning at all, I was bogging out a little
-I have no idea what my tire pressure is right now, I can go check later
-I was shifting at 7000 for each gear, and like I said only got to third
-Still have T-25 on 16-17 psi depending on how much it spikes, it drops to 10 by 7000. I also still had a stock exhaust but I just put in a Megan Racing downpipe and cat-back this weekend so I should be able to hold more peak boost next time
-I recently changed the plugs and they are BPR6ES
-Last time I logged a run I had no knock, but I wish I would have brought my lap top to the track
-Also the FMIC is one of the smaller one's from ETS that doesn't require you to cut the crash beam
I kind of got to the track late and 4 passes is all I had time for. I'm probably gonna go again in two weeks with the new exhaust and upgraded fuel system. I just picked up an Evo III 16G but I'm gonna wait to put it in when I get a little more experience on the track. I want to try and hit 13's with the T-25, even though it may be impossible. I was just looking at the video's of the runs and it looks like I should be picking up more top end speed, but it's just not there.
 
Last edited:
I've been looking at other people's time slips and there are people running a second faster than me with less mods and the same 60' time. Any ideas?
 
-I launched at 5000 rpm's, but I was focusing a little too much on the tree to know exactly what I launched at each time, next time I won't focus on the tree as much
If you are just running test and tune, forget about the tree completely. Don't even go when it turns green. Just sit there and get your rpms perfect, then go. Reaction time is not calculated into your ET. The clock starts when you do.
-I was not spinning at all, I was bogging out a little
Launch higher. Raise your RPMs in small increments until you can launch without bogging at all. You should get a little chirp and then traction, it shouldn't bog at all. Bogging is bad.
-I have no idea what my tire pressure is right now, I can go check later
If you lower it a little for the track you can launch even higher and get an even better 60'. 1/10 of a second off your 60' is about 2/10 of a second off your ET.
-I was shifting at 7000 for each gear, and like I said only got to third
I'm assuming you have a stock head, shift lower. More like 6,500. You are losing power at the top end, especially with your t-25.
-Still have T-25 on 16-17 psi depending on how much it spikes, it drops to 10 by 7000. I also still had a stock exhaust but I just put in a Megan Racing downpipe and cat-back this weekend so I should be able to hold more peak boost next time
-I recently changed the plugs and they are BPR6ES
Good!
-Last time I logged a run I had no knock, but I wish I would have brought my lap top to the track
-Also the FMIC is one of the smaller one's from ETS that doesn't require you to cut the crash beam
I kind of got to the track late and 4 passes is all I had time for. I'm probably gonna go again in two weeks with the new exhaust and upgraded fuel system. I just picked up an Evo III 16G but I'm gonna wait to put it in when I get a little more experience on the track. I want to try and hit 13's with the T-25, even though it may be impossible. I was just looking at the video's of the runs and it looks like I should be picking up more top end speed, but it's just not there.
I would put that 16g on like yesterday. Toss that t-25 in the trash. Then shoot for 13's.
Hope this helps!
 
Were they the same weight as your car? Do they have a fmic on the T25? Do you have any boost leaks?

They were probably heavier because I stripped out a decent amount of weight before I went to the track, but I just found out they have a scale at the track so I'll use that next time. Some cars had faster times with and without FMIC's. I did a boost leak test recently and I found one which I fixed.

To 9!'clipseDOHC, thanks for all of the tips. I'm probably gonna go back to Maple Grove on the 9th and see what I can do. I'm gonna check my tire pressure, not focus on the tree, do another boost leak test, launch higher, shift lower, and see if all of that helps. As I said I just put on a 3" turbo-back so I should hopefully see a huge improvement.
 
To 9!'clipseDOHC, thanks for all of the tips. I'm probably gonna go back to Maple Grove on the 9th and see what I can do. I'm gonna check my tire pressure, not focus on the tree, do another boost leak test, launch higher, shift lower, and see if all of that helps. As I said I just put on a 3" turbo-back so I should hopefully see a huge improvement.

You are welcome. Good luck, let us know how it goes.
 
I'm assuming you have a stock head, shift lower. More like 6,500. You are losing power at the top end, especially with your t-25.




Wouldn't you wanna shift later to set you up better for the next gear? I would assume shifting lower especially with the fmic on the t25 is going to make him slower in between shifts. I could be wrong tho.
 
Wouldn't you wanna shift later to set you up better for the next gear? I would assume shifting lower especially with the fmic on the t25 is going to make him slower in between shifts. I could be wrong tho.

I used to think the same way, but someone told me to try shifting lower and it helped with my 1/4 miles times on a stock head.
 
Make sure you are preloading your drive train on your launches.
At the track weight is key, most people only run with 1/4 of a tank or less to help with that, also removing access things for the track helps like spare tire and jack etc.

I'm not sure if you were burning out prior to racing, but a good rule of thumb is to skip burnouts for they arnt good and dont help for most street tires, this will require more research depending on your tire though.

Hope these couple things help you some, sadly cant help you to much more since i have never driven a turbo awd car ><
 
I'm thinking that shifting lower especially on a 2G will help; I have small duration cams, small TB, intake manifold, and intake ports, and most especially the tiny T-25. I'm gonna try shifting at 6500 and maybe even try 6250 next time. I'm waiting to put in the rest of my supporting mods before I put in the 16G. Also want to take it slow since its my daily driver.

FYI to fotowntalon and everyone else, I had a nearly empty gas tank, no spare tire or jack, no back seats, and no spare tire cover. I also made sure I avoided the water box and I am using street tires.
 
I have a 98 talon awd and it runs consistent 13.7/[email protected] on the t25. Boost set at 18psi dropping down to 13 near redline, car is around 3300 with me in it, still has the stock rear exhaust. You should be able to knock off a good second off your time.
 
I'm hoping to drop to the 13's. Before the boost was dropping to 9/10 psi and now its staying at 13 with the new exhaust so that should help a lot.

Also, does anyone know if not having a passenger side mirror will not get me through tech inspection? Some A hole smashed my mirror up and let air out of my tires the other night.
 
I'm hoping to drop to the 13's. Before the boost was dropping to 9/10 psi and now its staying at 13 with the new exhaust so that should help a lot.

Also, does anyone know if not having a passenger side mirror will not get me through tech inspection? Some A hole smashed my mirror up and let air out of my tires the other night.

As long as it's all the way off it won't matter. Now if it's hanging then I could see a problem. You can even pass a state inspection without a passenger side mirror.
 
I know this is kind of basic but when you launch do you just dump the clutch? this could hurt you time try slipping the clutch so you dont bogg down it takes practice but you will notice a dramatic difference in your time. also whats the gap in your plugs? tire pressure is key in drag racing, it can make or brake your time slip goals! also shifting at 7000 is probably whats hurting you the t-25 runs out of breath at about 6175 so basicly your power curve is decreasing and you start loosing power. look at some peoples dyno sheets it says for instance 347fwhp @6400 rpm so at 6400 the power the engine makes starts to decrease . hope this helps!
 
Thanks for all of your input. It was my first time out so I wasn't expecting much, but I was expecting better than a 15.4. I definitely need to work on my launches and just shifting lower. I should be going again next Friday and hopefully I will see a huge improvement.
 
You've got a 99 so you should have a flashable ECU, maybe try getting it flashed with an anti-lag launch control to help with the launch. I know it's only a little T-25, but if you're able to launch while making 8-10PSI of boost you should def be able to get out of the hole a little faster. Also you wouldn't have to focus on what rpm's you are at, just floor the gas and when the light goes green drop the clutch.
 
Luckily I have a flash upgrade from keydiver thats ready to go on the car with a 5000 2-step so that should help a lot too. All I have to do is get my new injectors in before I can load it up, which should be happening next week.
 
I copied this from my recent blog post:
Well I finally made it out to the track again and this time I had somewhat better results. Thanks to a 5000 rpm 2-step I was able to improve my best 60' from a 2.204 to a 1.959. I ran a best of 14.933 @ 90.03. This is better but definitely not as good as I was hoping. I believe there are a few things that contributed to this: 1) It was damn HOT!!! It was still like 85 degrees out at 9:00 pm and there was around 60% humidity. 2) My car was seriously misaligned. I got my alignment checked prior to going to the track and it's way out of whack. When I get an alignment this week it may help my trap times a little. 3) I have a minor but noticeable boost leak at my BOV flange. The flange itself is warped so the BOV doesn't seal properly and the weld from the pipe to the flange actually has a pin hole leak. ETS is sending me a new pipe so it should be an easy fix.

After looking at my old timeslips, one thing intrigues me, on my fastest run yesterday my MPH for the 1/8 mile was 3 MPH faster than last month's fastest run, but my 1/4 trap speed is .5 MPH slower. This leads me to believe that 17 psi is way to much for the T-25. I've heard that past 16 psi the T-25 just pushes hot air, so I thought my somewhat large FMIC would compensate for that, but I guess its just heat soaking.

Does anyone have any ideas for this loss of speed or how my times are still not up to par? I improved my launches drastically, I shifted at a lower RPM, tuned the car, and put a turbo-back exhaust on. For all those reasons above I definitely lost some speed but I don't thing that was the whole story. I also logged my first run with Evoscan and I had no knock at all so my tune is perfect right now. I think I should be going way faster than 90.
 
Because you are launching better, you are getting better 1/8s. As for .5 mph slower, things like shifting,weight (I mean you, not the car) and other small things can have that effect

Also, don't quote me on this, but because of te heat your turbo might have been choking a little earlier.
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top