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Street Build my98gsx's 1999 Eclipse GSX

Year:
1999
Model/Trim:
Mitsubishi Eclipse GSX
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  1. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  2. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    20181112_162834.jpg 003.jpg Purchased in 2003, this 1998 GSX got me through college and started my love for DSM's. Unfortunately its salvaged life (totaled in 2000, side-swiped on drivers side) left the vehicle cursed in my mind. 7 engines, two transmissions, and 2 transfer cases later it was time to completely part out, and scrap. (Before all the haters get mad about its disposal, the body was in bad shape - bondo and rust held it together at this point in it's life)
     
    Last edited: Jun 15, 2019

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  3. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    20181111_164738.jpg 20181130_165551.jpg A replacement 1999 GSX was purchased in 2018, which will be the donor for my previous cars upgrades.

    This GSX's upgrades - a mild 16g build was transplanted into a friends 1997 GSX.
     
    Last edited: Jun 15, 2019

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  4. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    20190209_161843.jpg 20190218_185111.jpg 20190220_212656.jpg Engine removed, engine bay sanded, prepped and painted factory red. Wiring harness work starting for a "semi-tuck", while leaving the fuse box in its oem location.
     
    Last edited: Jun 15, 2019

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  5. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    20190115_170812.jpg 20190417_182313.jpg 20190425_193032.jpg Engine/Trans from the 1999 was stored on a stand intact for future builds. The 1998 block and head were sent to Dyson Racing for machine work and building.

    Block: .040, Manley turbo tuff crank 88mm, manley h-beam plus', manley pistons, clevite bearings.
    Head: Origionally a SBR Stage 3, Supertech valves, Kelford 272's, Crowler springs/retainers
     
    Last edited: Jun 15, 2019

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    delta448 likes this.
  6. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    20190427_171538.jpg output.jpg Engine installed, with test fitment of exhaust and intake charge pipes. Wiring work continues. Fuel system almost complete -8 from tank to rail - fed from drivers side, returning through oem feed.
     
    Last edited: Jun 15, 2019

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  7. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    09876.jpg 20190311_185518.jpg Additional fuel system info - 8an firewall mounted in-filter to Fuel lab rail, to Radium rail mounted AFPR. -6 return. Singe walboro 450 pump. (injectors still unknown...)
     
    Last edited: Jun 15, 2019

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  8. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    After receiving much needed help from extremepsi, I upgraded the hta3586 hot side to a 3" discharge housing. Along with a modified jmf o2 and a bf side exit. All of which needed to be cut, aligned and rewelded (thanks jay). This setup caused a fitment issue with the oil filter clearance, which will now need to be remote mounted. 20190615_083534.jpg 115956.jpeg 105362.jpeg 105363.jpeg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  9. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    Today's project was to fit the newly welded exhaust into the car. I almost feel it would have been easier to go out the rear... NOTHING FITS. Even after all of the cutting I ran into an issue with the dipstick tube, and power steering cooler. I decided to remove the PS cooler for now, and just loop the lines. As for the dip stick tube I will cut up another one and rework the mounting bracket. Still awaiting my remote oil cooler, which hopefully will clear the exhaust pipe. 20190616_214327.jpg 20190616_214350.jpg 20190616_151937.jpg 20190616_151927.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  10. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    I've been running the 2g jmf small battery tray, but feel that the PC680 does not hold up well while the car sits for an extended period of time. My solution was upgrading to an evo battery tray made by jmf, with some slight modifications. This location will allow me to run very short power cables from the stock fuse box location, and clears up the firewall area where the stock battery mounted. 20190616_120756.jpg 20190616_124546.jpg 20190616_131930.jpg 20190618_210555.jpg 20190618_210730.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  11. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    Finally got the time to mock up the "cold side" intercooler pipes, and test fit the front bumper. I will eventually open up the hole and add a heat shield of some sort. Happily, not only did the bumper fit, but the exhaust will clear the remote filter housing which I will post soon. Once the intercooler pipes return from the welder I will decide on SD and BOV locations. 20190621_220431.jpg 20190621_212401.jpg 20190621_210628.jpg 20190622_161304.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    Robby likes this.
  12. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    Its been a long wait between welding and powder coating, but I was finally able to put together my water pipe and lines. The stock water pipe was modified to delete all of the water nipples now not in use. The rest were converted to -6 male for use of braided lines into the turbo housing. The rear water line sits very close to the exhaust, so DEI sleeved wrap was added, which will hopefully cut down on some unwanted heat. water pipe.jpg 20190708_204245.jpg 20190708_214439.jpg 20190708_214432.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    Robby and ThunderChild like this.
  13. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    I have been slacking on the build updates, but a lot has been completed since my last posting. Fuel system was finished with the help of Marren Fuel Injection in CT. They made me a custom set of direct fit hi impedance 1500cc injectors. I could not be happier with these - not only are they a perfect fit within the rail/head with the supplied spacers, they were also direct plug in for the OEM wiring harness. The rail mounted regulator, injectors, wiring, and drivers side -8 feed made for a really clean looking completion. 20190820_190007.jpg output.jpg0987.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    BLACK'98DSM likes this.
  14. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    Taking a little break from the engine bay and wiring... my97gsx and I installed rear differential bushings together, made by GSX-dude found our freelancer forum. Great quality, highly recommended - but such a pain to do, especially on rusty 20+ year old vehicles. The black GSX had such a horrible "clunk" while shifting hard through gears - after the bushing upgrade that completely went away. If you haven't, would definitely check out gsx-dudes products - he makes some great stuff for our cars! 20190905_183935.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  15. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    I was shocked how well the startup went. After a triple check of wiring, ecu settings and fluids it fired right up. I was afraid that that the 1500cc injectors would dump too much fuel and not allow a proper break-in/warm up. AFR's were rich (high 11's - 13.3) but it did not stall out (it did misfire badly but that stopped after the removal of my COP setup).
    Link to idle video:
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  16. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    After being frustrated by misfiring from my COP setup I decided to switch back to the OEM coils. (This was also done after conducting research on COP vs OEM Coils on the forums) - Coils came out to be the clear winner, so I feltthe JMF mount was the best option for the job. Their mount fit well, even with the Jay Racing alternator relocation kit. (A 1/2" spacer was the only modification to the "passengers side" bolt, the rest fit perfectly.)
    As for the wires, new 1g NGK's were purchased and used. Some questions regarding them being so tightly together came up, but since they are new, undamaged wires I do not believe any issues should occur.
    20190911_215824.jpg 20190911_215617.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  17. bettfootball

    bettfootball Proven Member

    281
    234
    Joined Mar 7, 2010
    bettendorf, Iowa
    Looking great!!
     

    Street Build 512  1

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
    Loading...
    my98gsx likes this.
  18. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    I finally finished up the final steps of my build. Dyno tuning this scheduled this week, but I would like to show off some work done by my fabrication friend Jason. I am going to post this information on another thread but I had the idea of using the JMF small battery tray for a catch can mount. Eventually I will powdercoat this wrinkle black, but here is the raw "test-can" 20190913_220345.jpg 20190914_145935.jpg 20190913_220337.jpg 20190917_194514.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  19. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    I am very happy to report the dyno tuning completion of my GSX. For those who follow Evans Performance Academy on instagram or facebook, my car was featured on there for an ECMtuning/DSMlink training class. E85 is not readily available in my area so for now I am stuck with good ole 93, but I am very happy with the numbers, coming in at 563whp / 422ftlbs. (I post additional photos on my instagram as well for those who are interested, follow me @boostin845) trailer.jpg evans.jpg 20190927_073704.jpg dynoutput.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    delta448 likes this.
  20. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    I am still awaiting to get my car back from Evans tuning academy, but I have been busy working on some cosmetic upgrades. Front lip, fog light deletes, and exhaust head shield are installed on the bumper cover. I also had my Enkie Evo5's re-powder coated since they were starting to show some age on them.
    bumper.jpg 20191006_211349.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
  21. Vegas smith

    Vegas smith Proven Member

    2,711
    1,287
    Joined Dec 2, 2002
    Houston, Texas
    I'm curious how you got the radium afpr and the FIC rail to work together? I thought the radium only came in 6 or 8 orb fittings and the FIC rail came in at 10orb or something.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  22. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    Vegas - I ran a -8 an male to -10 port with an o-ring against the rail. The radium FPR mounted directly to that. From the radium I then run a -6 to the stock feed line with a metric to an adapter. Here are some close up pics. 31zQuXTF3cL.jpg F154135874.jpg output.jpg0987.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    chinola69 and delta448 like this.
  23. Vegas smith

    Vegas smith Proven Member

    2,711
    1,287
    Joined Dec 2, 2002
    Houston, Texas
    Oh cool, was there not enough room to place it on the driver's side?
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  24. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    Well my setup was much easier ran on the pass side due to using the stock feed as a return, but no there is not enough room to fit the reg on the pass side due to the timing components. It would have to be mounted on the opposite side to work.
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    Vegas smith likes this.
  25. my98gsx

    my98gsx Proven Member

    485
    39
    Joined Aug 14, 2005
    Wappingers, New York
    I must say right now I am extremely disappointed in how much lag this setup has... This is my first non-stroker build, and it is obvious that the 2.3L helped spool this turbo much quicker. The car has not been aligned yet, so I have not fully mashed the throttle, but unless you are laying hard into the car, it builds zero boost upto 5k. That aside, I did manage to swap over my wheels, put on the nose and take the car to a show, which I have not done in some time. 1658456.jpg 20191012_211411.jpg 132241654.jpg
     

    Street Build 551  11

    1999 Mitsubishi Eclipse GSX
    563 whp · 422 lb/ft · 2G DSM

    691  4

    1999 Mitsubishi Eclipse GSX
    12.091 @ 114.490 · 2G DSM
    Loading...
    BLACK'98DSM likes this.

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