The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

Rebuild, now tune 420a

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

EclipticalGS

10+ Year Contributor
1,449
19
Aug 25, 2008
walker, Michigan
Ok, I got done rebuilding my 420a project motor. All of my money is going into this car becuase I have this hunch that the 420a has a beastly crankshaft with a lot of growing room.
I have put some stock pistons in, then took them out and put in some JE race pistons (same compression) and Eagle H-beam rods, not sure if its a good combo. But anyway, I put it all back together and now it runs a little leaner than it used to, but i can feel the difference in power. I was setting up my GReddy EMS and I got out of the car, didnt have room so i shut the door and smash/pop/ crackle goes my GReddy. So i try to find my AEM ems and guess who has it, my brother in california "borrowed" it.

So as im doing this turbo set-up..how do i tune with my 420a??? Theres no maf.etc.
Should i jsut get my injectors, fuel pump in and turbo, wideband a/f, and a fuel pressure regulator?..Then what??

Whats the difference between dsmlink?
and a SAFCII or something?
Also i hear about a translator? what is that? like a maf translator, which then i will need to install a maf??

i dont even know if i can put a maf on there.

It was a lot easier with that GReddy :( RIP
 
a SAFC lies to the ECU, tricking it in to giving it more or less fuel,

DSMlink actually changes the tune onthe ECU with the ability to give it more or less fuel, adjust for larger injectors, add an retard timing if needed

DSMlink is the way to go for sure, althought i am not sure if it works for you 420A guys


a MAF translator translates the signal from the stock mas whe nyou install a GM blowthru mas i believe it allows you to tune close to the same way a SAFC does, i could be wrong i have never used a Translator or a SAFC, i use DSMlink
 
So can i put a blowthrough mas sensor off a gs-t on my intake pipe? where do i hook it up?

then hook that into a translater that can alter my a/f ratio?? does this all hook into my ecu or wire in somewhere?

i dont think i have an eprom ecu on my 95 n/a...so dsmlink aint an option.
 
So can i put a blowthrough mas sensor off a gs-t on my intake pipe? where do i hook it up?

then hook that into a translater that can alter my a/f ratio?? does this all hook into my ecu or wire in somewhere?

i dont think i have an eprom ecu on my 95 n/a...so dsmlink aint an option.

No, blow thru is like a GM 3.5" one that is mounted after the turbo/intercooler

not like a Mitsubishi one where it is befor the turbo
 
The 2gNT's ECU uses speed density calculations to measure airflow, so no MAF.

DSMlink is great if you have a 4g63 and a Mitsubishi EPROM ECU. You have a 420a with a Chrysler ECU. Use MegaSquirt, as the others have mentioned.
 
Ok, just reading up..I found megasquirt..559. Then theres a plug and play MS thats like an ecu..will this work for my 95 eclipse?? I read a forum saying it wouldnt but that was a long time ago! or should i just get the original MegaSquirt that "1slow97" linked.
Thanks
 
Yeah the plug-and-play seems to take for ever. If you are capable of soldering you can install it. It takes some time but it's a fun learning experience. And there is a ton of help on the forums esp. msexstra.com Rs-autosport actually have a kit to convert a MS1 to MS2.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

  • Wanted 1g 1991 Black Cherry Eagle Talon
    5-speed
    • bamatalon
    • Updated:
    • Expires
  • For sale Misc Left Over Parts
    Hello, I have a few left over parts for sale, these do not include shipping, please pm me for a...
    • r3dmak
    • Updated:
    • Expires
  • For sale Alpha Injection Clinic 2200cc for 4G63 DSM/EVO
    I have a set of Alpha Injection Clinic 2200cc high z injectors for DSM/EVO. I am stepping up to...
    • spoolinpos
    • Updated:
    • Expires
  • Wanted WTB 2g half rad
    ISO of a 2g koyo half rad or something equivalent.
    • Michael Wucher
    • Updated:
    • Expires
  • For sale Coilover Springs
    Used pair of Eibach coilover springs from an old set of Ground Control coilovers. 2.5" inner...
    • RamenPride
    • Updated:
    • Expires
Back
Top