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.

420A 420a choice of performance parts

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

95eclispe

10+ Year Contributor
260
5
Dec 31, 2011
Brooklyn, New York
ok so im looking to add to my moneypit on my 420a not trying to boost my car right this second although it might be an option at a later time.(with that said please no saying trash your 420a and get a 4g63 i picked up a 420a because thats what i want to work with) heres what i have in it so far:
F1 fidanza stage 1 racing clutch
new polished and bored out intake manifold
eibach springs and coilovers
MSD coilpack and sparkplug wires with NGK sparkplugs
powdercoated valve cover
battery rerouted to the trunk for more room
Megan Racing headers with downpipe
 
get a ###### fuel pump since yours is probably gone anywaysLOL like the 225 walbro and fuellab adjustable fuel regulator then get a nice intake manifold for it you can check alot in the classifieds or i have a friend that may be able to get you parts too just let me know what you would like

also take out that cat way to much restriction and do a full exhaust your loosing power there too
 
Last edited:
Intake, exhaust, and ignition are all you can really do. Without higher compression, higher revving, or boosting the engine, you truly won't get much out of it.
 
get a ###### fuel pump since yours is probably gone anywaysLOL like the 225 walbro and fuellab adjustable fuel regulator then get a nice intake manifold for it you can check alot in the classifieds or i have a friend that may be able to get you parts too just let me know what you would like

also take out that cat way to much restriction and do a full exhaust your loosing power there too

well i just took my stock manifold and bored it out so it does the same as any aftermarket one the fuelpump ill take care of this weekend and the exhaust it just has an aftermarket tip that came with the car i want to delete the cat but anything else i should do to it for more power? it has a CAI too but besides going the turbo route idk what else to do

if i replaced my cams from stock to something big what should i go with? and would it increase hp being that its not a turbo? i just dont wanna end up throwing a rod
 
You dont need a new fuel pump. I would suggest a lightweight flywheel or a lightweight under drive pulley system.
 
he has a possible blown fuel pump thats why it was mainly suggested in the 1st place a posted in another thread we didnt want to cross threads

Oh my bad. I didn't see that. Well in that case I would just get an OEM replacement or a 190 so you don't need an afpr
 
Lightening up the weight at the crank can free up some torque like previously stated at light weight flywheel and clutch and maybe a under drive pulley too.
 
There is only so much you can do without boosting it. If you really wanna stay NT and up the power you could up the compression ratio but if you're going to go that far you might as well boost it.
 
You can always go high compression for a little more power then later on down the road boost it. With a good tune and high compression on low boost application you will make good power
 
ok so about the whole flywheel thing i have a facing clutch/flywheel already but with my car you cant buy the clutch disk and flywheel seperate like you can with turbo models i tried. its all one piece so its always going to be heavier than others but i have as light as you can go without going stage3 which is for boosted models

You can always go high compression for a little more power then later on down the road boost it. With a good tune and high compression on low boost application you will make good power

ok so how do i up the compression? i have a stock block so dont want to end up blowing it buy tuning it to where it cant handle just need more output is all im saying
 
ok so about the whole flywheel thing i have a facing clutch/flywheel already but with my car you cant buy the clutch disk and flywheel seperate like you can with turbo models

True, but you can always convert to a non-modular clutch for the lightweight flywheel, granted, this is replacing an already replaced clutch. Up to you. I like the lightweight pulley. For Cams Crower 2's NA grind are good for boost or NA. A 2.5" catback would be nice for either (unless you plan on boosting very heavily) lightweight mods are good all around
 
No offense, but unless you have a 2011 5.0, spending the dollars on an N/A motor doesn't get you very far. I wouldn't spend the dough. Save it for a turbo setup or a beater 1g.
 
No offense, but unless you have a 2011 5.0, spending the dollars on an N/A motor doesn't get you very far. I wouldn't spend the dough. Save it for a turbo setup or a beater 1g.

well see i can always upgrade ow and down the road just drop a turbo in and re-tune and im good so essentially i wouldnt be wasting my money
 
well see i can always upgrade ow and down the road just drop a turbo in and re-tune and im good so essentially i wouldnt be wasting my money

You would be wasting money if you want to boost it later beacuse most NA Mods wont work with a turbo. Headers, CAI, etc.. you would have to remove all that if you go turbo

ok so how do i up the compression? i have a stock block so dont want to end up blowing it buy tuning it to where it cant handle just need more output is all im saying

To get higher compression you need new pistons / rebuild motor
 
If you get a new clutch you can get the light weight flywheel and a separate clutch disc and pressure plate. And an underdrive pulley.
To up the compression you need 'high compression' pistons which means building the motor, but you will get some power out of the high compression. THEN if you decided to go boost later on, you can still add some boost to the build bottom end.
If you dont want to build anything then you can just get a 2.4L bottom end out a cloud car and the 2.4L will give you more torque. But theres custom work involved in doing a 2.4L swap
 
are you looking for faster off the line with good pickup or more top speed?

so i got a oem fuel pump and its running again. im going to go with a 190 though. im looking into cams but dont know what size to get or brand? kelford? crowers? i just ordered eagle rods and weisco pistons got a great deal off them from another forum and my arp studs just came in. should i go with a ecmlink? i want to tune the car since i feel im not getting the full power i should be getting out of my car from these add ons.
 
Pretty sure ecm doesn't make anything for the 420a. The 420a guys tune with something else that work alongside your ecu from my understanding

Correct, ecmtuning doesn't sell anything for the 420a cars. You will need a standalone ecu such as megasquirt or aem for the 420a.
 
Maybe ecmtuning will one day make a tuning device for the those running a turbo on their 420s.

this would be nice since i plan on going the turbo route in the near future. I will look into some stand alones but never swapped to a stand alone and i hear you can damage them easily if you've never tuned before(like me):confused:
 
You said you bored you intake, have you put on a bigger throttle body? If not alot of people on here are doing a Jeep throttle body swap. It ups the 52mm stock opening in the throttle body to 58,but can be bored to 60mm. Added bonus is it wouldn't be a waste, you can still use it when you Turbo. I'm planning on doing it myself. Aside from that, ditch the cat and add cat back. Those wont do much, but can be used even when you go Turbo.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest Classifieds

  • For sale VIRGIN 4G63 6-BOLT TURBO HEAD
    Came off a virgin stock AWD Auto 1G DMS (91), also have matching block and crank which are also...
    • The_Partout_Spot
    • Updated:
    • Expires
  • For sale 1G DSM 4G63 6-BOLT TIMING COVER
    Used, see condition in photos. Buyer covers shipping / fees.
    • The_Partout_Spot
    • Updated:
    • Expires
  • For sale Garage clean out
    Changing setups on the car and getting rid of some stuff as well that's been laying around. Will...
    • 92GSXtacy
    • Updated:
    • Expires
  • For sale 4G63 Griffin intercooler cores
    Griffin intercooler cores. Top to bottom flow. High cfm and heat transfer. 24x8x2.75 and...
    • Galant665
    • Updated:
  • Wanted wtb black 2g dashboard
    Looking to buy a 2g black dashboard. Located in southern california but willing to travel.
    • randizzle420
    • Updated:
    • Expires
Back
Top