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Street Build LTA 1998 GSX - 9 Second Streetcar

Year:
1998
Model/Trim:
Mitsubishi Eclipse GSX
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  1. Farmcar

    Farmcar Proven Member

    31
    8
    Joined Aug 6, 2013
    Portage, Michigan
    Congrats on the win! Car looks great
     

    Drag Race Build 2K  8

    1990 Plymouth Laser RS Turbo
    11.34 @ 130 · 1G DSM
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    spoolinpos likes this.
  2. spoolinpos

    spoolinpos Proven Member

    126
    87
    Joined Feb 13, 2008
    Fraser, Michigan
    Well, two new additions coming up! I'll dive a bit more into detail once installs are finished up!

    116287769_3259513824272746_3178516801233184810_n.jpg

    108158174_299918274452335_144469531775350295_n.jpg
     

    Street Build 3K  15

    1998 Mitsubishi Eclipse GSX
    9.855 @ 138.67 · 2G DSM
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    LaserRS92 and OH91awd like this.
  3. spoolinpos

    spoolinpos Proven Member

    126
    87
    Joined Feb 13, 2008
    Fraser, Michigan
    Well I finished up the Forced Four smart 100.1 shift box installation and pretty sure I have it configured with everything I want it to do! I decided to totally ditch the OEM TCU and use this unit to shift on street as well as track. I believe I still have a little bit of values to tune for street driving, but it's close to be dialed in.

    A couple really nice features of this thing (especially being limited with ECMLink's input and outputs) is that it gives you a couple of inputs you can use to log data! I haven't started to log anything yet, but I'm sure I will find something to log at some point (Maybe coolant pressure, oil pressure etc...) Another AWESOME feature is the stall up mode, which allows the car to be in 2nd gear while on converter, so between stall up mode, and the Audi vacuum pump I should never have to worry about the car over powering the brakes while being on the converter.

    And, one of the selling points of this unit to me is that ability to configure two separate outputs. I am only using one of these outputs, so I have another if I find a use for it. This was important to me due to the use of n2o. I have ECMLink controlling the n2o to get on the converter, since I am able to use a min/max boost parameter. So I have it set on ECMLink to shut off at 10psi on street tires, probably 16psi on the M&Hs. Now, I don't like the idea of having the n2o spraying the entire time I'm on the 2 step, so having this extra output allows me to tell ECMLink to shut off at my desired boost value, then once I launch the shift box is set up to control the nitrous! The parameters used for the shift box are 1st, 2nd, 3rd, 4th gears, TPS, Brake switch (really cool), RPM, and vehicle SPEED, which is what I use to tell it when to shut off.

    Install was pretty straight forward. I made a simple mounting bracket out of aluminum L to mount in the factory TCU location, and had already identified a lot of the TCU harness wiring from my old forced four shift box. I love that this box has a computer app to control it, it was really a pain in the dick to enter settings into the old unit. I highly recommend this part for anyone modifying an auto car!

    116287769_3259513824272746_3178516801233184810_n.jpg 115995719_282781162816708_891700598957603827_n.jpg 109781024_1750060311811879_271274136519790260_n.png 109688265_289603562342509_7934487850651788410_n.jpg 117807360_325143935201248_4235364729210951534_n.jpg
     
    Last edited: Aug 16, 2020

    Street Build 3K  15

    1998 Mitsubishi Eclipse GSX
    9.855 @ 138.67 · 2G DSM
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    d1prospect likes this.
  4. spoolinpos

    spoolinpos Proven Member

    126
    87
    Joined Feb 13, 2008
    Fraser, Michigan
    Here's the update on the steering wheel and my COWBOY button.

    A friend of mine had one of these Grant GT wheels in his car, and I really liked the styling and the feel to it. It is about 13" diameter wheel, so a bit smaller than the OEM wheel. The pain in the ass about this little project was the NRG quick release. The steering wheel is a 5 bolt as you can see in photos, which is fine because NRG does make a 5 bolt quick release. Well, what I didn't know, is in the 5 bolt steering wheel kit from NRG, the steering wheel hub adapter is also 5 bolt, and not 6 bolt, which is what my hub adapter is. Long story short, I don't believe NRG makes a kit the combines the 5 bolt steering wheel mount, and a 6 bolt hub adapter, so I had to purchase two separate NRG kits to make it work (SRK-350BK and SRK-250BK) . Oh well, it's mounted and working properly so what can ya do.

    Now, the COWBOY button. I didn't like the idea of being forced to use n2o with whatever parameters I had set in the shift box. So I had to make a choice before the run where I wanted to nitrous to shut off based on MPH. This solution allows me to turn the nitrous off via shift box early in the run (example tell shift box to shut n2o off at 80mph instead of 115), but allows me to override the system during the run and activate the n2o if needed. This momentary switch and bracket are from Motion Raceworks, really cool company with some bad ass products.

    I'm really looking forward to putting this recent round of mods to the test, as at the end of this month I have another PYOP hardtire event, and an IFO event in Hebron, OH.


    117817780_1186811398366679_6871229249325825918_n.jpg 117634173_328112975040052_5033175390839664965_n.jpg 117968320_602727670427584_7278662452522348494_n.jpg
    117946749_2627446070901636_728403854119704143_n.jpg
     

    Street Build 3K  15

    1998 Mitsubishi Eclipse GSX
    9.855 @ 138.67 · 2G DSM
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  5. d1prospect

    d1prospect Proven Member

    382
    44
    Joined Mar 14, 2004
    Glen Bunie, Maryland
    Sharp, keep up the good work. Car is well balanced and super clean.
     

    Street Build 4K  17

    1995 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
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    spoolinpos likes this.
  6. b00stedtalon2

    b00stedtalon2 Proven Member

    1,060
    554
    Joined Dec 19, 2005
    Detroit, Michigan
    Everything came out great. Nice work!
     

    2K  1

    1994 Mitsubishi Evo
    automatic · Lancer Evolution

    Street Build 4K  1

    1993 Eagle Talon TSi AWD
    9.585 @ 143.96 · 1G DSM
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    spoolinpos likes this.
  7. spoolinpos

    spoolinpos Proven Member

    126
    87
    Joined Feb 13, 2008
    Fraser, Michigan
    Well, took the car out to IFO Hebron and entered FIS class. First pass off the trailer testing 75 shot and the new shift box yielded a new PB of 9.855 @ 138.67! Terrible TERRIBLE 60' of 1.639 and the new shift box seems to shift way faster than the old box, so I had my shift points sent wayyy too low. Car shifted 1-2 at 8k, and 2-3 at 8200, both of which I typically shift around 8700.

    This was all very promising to me, as I saw A LOT can be improved on. This was the first pass I had turned the nitrous off while on the two step. I did not like the idea of sitting on the 2 step with a 75 shot spraying the the same time like I have done with 35 and 50 shot just fine. I believe there's a bit of a delay from the shift box reactivating the nitrous when I let off the brakes, so I figured that's the reason for the terrible 60'. I decided to try what I have been doing in the past with the smaller shots, and spray while on the 2 step.

    2nd pass, car gets on the converter just fine and reaches the two step, then it just... shut off. Like I turned the key to the off position. Really weird, as this has never happened to me. I fire the car back up after a bit of cranking, and chalked it up to maybe the system being flooded while being on the nitrous. So I will switch back to turning nitrous off while on 2 step (shuts off when I reach 18psi).

    3rd pass, which is eliminations round 1, Car seems to get on converter fine, two step is all normal, let off the brake and the cars moves but then suddenly shuts down on me. Pack up and head home.

    Compression test showed number 3 at 90 psi, so something's hurt. I leak down tested and pinned it to the exhaust valves. Strap on the spark plug was also melted. The head is already at the machine shop getting repaired. I plan to step the nitrous back to 50 shot just as I had it at the last event. The car never skipped a beat with the 50 shot, and it seemed to love it. I will be most likely upgrading from ECMLink and moving away from wet shot system to dry shot over the winter, maybe then I will try a larger 75 shot then.

    Anyway, had a great time with friends regardless of how it went down. That's racing for ya, time to get it fixed and try the hit the last two events I wanted to go to for the year!



    118765246_10117990230360964_3398607307869197901_o.jpg 118655221_10224083707104323_6420468852279060220_o.jpg 118730295_10117990233454764_6349223378688305952_o.jpg 118438114_314762623300795_5167240916912009624_n.jpg
     

    Street Build 3K  15

    1998 Mitsubishi Eclipse GSX
    9.855 @ 138.67 · 2G DSM
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    b00stedtalon2 and TK's9d2TSi like this.
  8. spoolinpos

    spoolinpos Proven Member

    126
    87
    Joined Feb 13, 2008
    Fraser, Michigan
    Alrighty, well a bit of an update. I found out that the two intake valves on cylinder 3 were leaking, and the exhuast valves actually turned out to be alright, but had some aluminum stuck on them and cleaned right up. Got the car back together and just missed out on my local PYOP no prep event for the month of September, due to me being a moron and breaking my map sensor LOL. All is well, as I had more time to get the car ready for the PYOP event at Pacemakers, hard tire class.

    That was a completely different experience of PYOP than I'm use to. These guys start at the front of the track, so there was still some prep on the surface, and the track just kept getting stickier as the night went on. Those hard tire guys down there are for real also, they were hooking and putting power down, they were fast! I had a blast down there, and hope to bring a bit more for them next year!

    I made it to round 3, with terrible launches as you can see in the videos, and we decided to try and turn it up out of the hole, I was going to need it to hang in there. Well, it didn't go so well, as the car's power ramped in the tires and prepped surface caused wheel hop, and then snapped the passenger side rear axle as pictured.

    There is one last event I wanted to make, and that's my local no prep October 16th, but I just caught news that the build time for my axles are 4 weeks out, so that's a wrap for this year! I learned a lot, and accomplished my goals, I have nothing to complain about! I'm looking forward to getting back out to events next season and give er hell. I'll post up some videos of the Pacemakers event!

    Round 1: Front brakes were actually hanging up from me adjusting the brake switch in too far, fixed between rounds 1 and 2. This notch was on nitrous as far as I know as I saw the purge.



    Round 2: Launch was really bad, had to run him down. The yellow mustang hooked great, and made some good power, I don't know specifics, but I do believe I heard a supercharger in the staging lanes.




    Round 3: Snapped rear passenger axle, fast ass truck though, I believe nitrous powered.


    120490967_10164591956960122_2896757593805266134_o.jpg

    I have a couple things in mind for winter upgrades, but not 100% set or sure on all of them yet, so I will try and post updates as they happen! Thanks!
     

    Street Build 3K  15

    1998 Mitsubishi Eclipse GSX
    9.855 @ 138.67 · 2G DSM
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    TK's9d2TSi likes this.
  9. TK's9d2TSi

    TK's9d2TSi Supporting Member

    3,832
    1,421
    Joined Sep 11, 2017
    Cincinnati, Ohio
    I’ve never seen the tree light straight to green after staging. Car seems pretty consistent and not too bad if you just broken an axle. Are you planning to upgrade axles? Love the car:thumb:
     

    466  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    513  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
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    spoolinpos likes this.
  10. spoolinpos

    spoolinpos Proven Member

    126
    87
    Joined Feb 13, 2008
    Fraser, Michigan
    Yeah seems like these pour your own puddle (pyop) and no prep events use stright to green. My local pyop no prep event I go to uses a flashlight start.

    I ordered a set of Driveshaft shop's 800hp rear axle set. I think they may be a newer option from these guys, as I don't recall seeing them before. I just recall the 900 hp option that comes with larger splined axles and a new hub to go with it, or a 650hp option which I believe you had to reuse your oem inner cups.

    This new option is a direct fit into oem hub, and comes with their own inner cups with 300m stubs and chromoly CV internals.
     
    Last edited: Oct 1, 2020 at 6:03 AM

    Street Build 3K  15

    1998 Mitsubishi Eclipse GSX
    9.855 @ 138.67 · 2G DSM
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    TK's9d2TSi likes this.
  11. TK's9d2TSi

    TK's9d2TSi Supporting Member

    3,832
    1,421
    Joined Sep 11, 2017
    Cincinnati, Ohio
    Ahhhh! PYOP light makes sense. Yikes $1200 just for rears. But I’m sure at those power levels, that’s nothing. We have to pay to play :D
     

    466  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    513  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
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  12. spoolinpos

    spoolinpos Proven Member

    126
    87
    Joined Feb 13, 2008
    Fraser, Michigan
    Ya a little unexpected set back, still not as bad as the $2100 option they offer! LOL
     

    Street Build 3K  15

    1998 Mitsubishi Eclipse GSX
    9.855 @ 138.67 · 2G DSM
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