420A My supercharged 96 Eclipse GS

[ryan summers]

i bought this car already like this, only alittle info from last owner on it and im trying to figure out how these cars are tuned,, my last car used a handheld tuner called an xcaliber, but these are different, also i need to know what kinda injectors i need. owner said it was running 18 psi on the super charger but i recently figured out its more like 8 psi. i hear people saying 6 bolt and 7 bolt, how do i find out what i got here? i think its a gs but im not even sure it dont say on the car or the title. any help would be great!!

i know its fwd and has had alot of things put on it, racing seats. sc, some venom 400 thing but its unhooked, msd ignition, stage 2 clutch, blow off valve, steering wheel, body kit, tail lights and head lights changed, lots of stuff, i have receipts for the cams that were put in it also and has aem adjustable cam gears

 

[2gmitsueclipse]

You should contact the PO for how that thing was tuned and what injectors are on it. You should have done a little more homework before buying something that modified. The engine you have there is a 420a. Originally, that motor was used in non-force inducted DSM's. There are a number tuning possibilities for your car. I am not very familiar with the 420a platform, so maybe you should check out the NA forum. You will have a lot of homework to do figuring what was done to the car you bought.

 

[97 eclenger]

its an 8 bolt engine 420a. originally a non turbo engine and cant handle very much boost on stock internals. I've never seen a gm supercharger added on though. isn't the bov useless on a supercharger which also should use an intercooler?

 

[dsmcrzy]

That supercharger looks like something out of mad max with it sticking out of the hood.

That is the first supercharged 420a I have seen.

You don't have to use an Intercooler with a supercharger just like you don't have to with a turbocharged car.

 

[ryan summers]

its a supercharger from a super coupe ford thunderbird eaton m90. it has to have a bov due to the way its routed, it runs threw the throttle body most superchargers push straight into the intake of the car, this is what i was told by the previous owner. i asked about that to when i seen it , i am going to put an intercooler on it soon, i just talked to the old owner on the phone, took a bit to get ahold of him, forgot to ask about the cams but the engines built, weisco pistons and eagle rods so he says anyways, he seems like he knows what hes talking about, im a mechanic and have been for 15 yrs now but not familiar with this engine or car for that matter. i know it runs good and its fast. i just did not know the specs, he says its tuned and was done by a local shop but i did not ask how it was done. is there a handheld type of tuner for it? or computer program where i can change specs?

trying to also think of paint colors, soon as it warms up here its getting all stripped down and redone, but sense the seats are red i dont have many choices, im going to paint it gun metal grey i think and i guess the engine parts will have to be red to match properly

any ideas on the size i need of an intercooler? i see alot of 28 inch

 

[Agll30]

supercharged 420a eh.

 

[dsmcrzy]

There is no way to tune the stock ECU on the 420a. The only way to tune it is to use a piggyback or a stand alone system

 

[ryan summers]

dsm link? ive been reading about it and you can choose 2g as the platform. so i assumed it would work with my 2g

 

[donniekak]

dsm link? ive been reading about it and you can choose 2g as the platform. so i assumed it would work with my 2g

Dsm link is designed for the 4g63 cars.

 

[ryan summers]

whats a piggy back? is there a certain brand thats good?

Apexi AFC NEO like this one?

it might be easier for me to just send my ecm to get tuned. seems like that's what a lot of the 420a guys are doing or get a megasquirt stand alone.

Previous owner sent the ecm to jegs and they done something to it, cost a lot to but i cant tell from the receipt what they did to it.

ok, figured out what a piggy back is, i have one already just did not know what it was called, i have a venom 400 installed and a jet performance chip that the last owner sent to jegs to get installed in the ecm

here's what i've found out about it and i looked the car over and wrote everything down and went thru all the receipts and checked part numbers, done all the research i could, here's what i came up with.


performance/engine
stage 2 crane cams
62 mm throttle body
e rom jet performance chip
venom 400
eaton m90 supercharger
megan racing header
msd igntion
AEM adjustable cam gears
obxintake manifold
jet performance chip
unorthodox racing crank pulley kit
head shaved 15 thousands
nology coil amplifiers
head gasket
valve job
performance valve springs
resurfaced head
head bolts
weiso pistons
eagle rods
stage 2 clutch
bigger injectors not sure of size yet
blow off valve
AEM boost gauge

suspension
tokico gas shocks
tokico adjustable coil overs
front and rear strut tower bars
cross drilled rotors
all wheel disc brakes

interior
aftermarket steering wheel
quick detach hub for steering wheel
carbon fiber racing seats
nugen 5 point racing harnesses
kenwood radio


exterior
18 inch rims
body kit
vent things on the side windows

want list
new throw out bearing
boost controller
wideband
paint job
cerakote engine parts
intercooler
meth injection kit
bigger injectors
header wrap
smaller pulley for sc
amp
megasquirt stand alone
motor mounts
lsd


im sure theres some stuff i missed or have not seen yet but the guy kept pretty good records. if i missed something then its small. i'm pulling everything out soon as it warms up so i can be for sure on everything before i proceed so i have plenty of time for reading and asking questions. i just learned how to navigate the page here so i wont bother people with so many questions, sometimes its easier to talk one on one with someone that knows the answers then searching for it.

if anyone wants to help out that would be great, if not i understand and ill search for info, thanks again for the help everyone

 

[synthetek]

Your best bet would probably be megasquirt. Jet chips and stuff like that are pretty limited in what they can do and aren't going to help much with larger injectors or tuning a car with a supercharger. You have a very unique situation since you are one of very few people to have a supercharged 420a so its going to be hard to find answers to some of your questions.

 

[Karmah]

Megasquirt. Probably have it professionally tuned. There are not many supercharged 420a eclipses out there. Could be a nightmare

Try out the 420a, srt, and edz page on facebook. They should be able to help you.

 

[ryan summers]

ok thanks