Cant go wrong with Autometer. I have the Z series boost and electric oil pressure gauge, work great.

Look under the car and see if you see a Fuel Management Unit(looks like a cirlce with 2 hoses coming off it)under the car, near the gas tank, near the passenger rear wheel. You could run a simple 7/8psi boosted setup on the stock ecu with an FMU and a 255lph pump.

stock ecu? or is it running a standalone?

It's an NA 4 banger, It's going to be raspy unless you throw a bunch of resonators in the system.

The manifold is most likely a t3 flange, it will not work with mitsu flange types. Better off buying a new turbo, A china charger off ebay will do or if you can find a good name brand even better. Just make sure to use a restrictor (1/16 inch) on the feed line.

You can get a Header back exhaust for $162 on ebay.

The front 02 sensor is most likely your current issue. Don't just play the guessing game and throw new parts and sensors at it. Get the car scanned if you don't have an obd2 scanner.

Remove the Fan that's in the way and get that o2 in there. No front o2 sensor can cause a no start, Driving without one I wouldn't even attempt and explains your no power symptoms . It Doesn't know what to do without the front o2 so it just dumps as much fuel as possible.

Gotta sacrifice some things for other. If you can't get it to fit, Mount a fan on the other side of the radiator.

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T)View updates to this DSM profile...

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T)View updates to this DSM profile...

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T)View updates to this DSM profile...

If you dont have inspection then just replace the cat with pipe. It'll throw a code, but wont cause any problems. You can get a 3" GST catback on ebay for like $140 with test pipe included. http://www.ebay.com/itm/161809845583?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

They're not necessarily worse, they perform like you painted a oem pack red lol. Quality has went done over the years. They output the same as OEM, so you'd be buying a red coilpack that will probably fail.

Just go OEM, MSD is garbage for 420a.

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T)View updates to this DSM profile...

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T)View updates to this DSM profile...

Yes ecu needs to be swapped. How long it takes depends on your skill level. This should answer all your questions. http://www.2gnt.com/?d=ATMT

Buy wheels, lower it, leave body stock. That front bumper looks absolutely horrid tbh.

Those threads are outdated, Ed peters recommends Mobil 1 to be used in the manual trans, do not use atf+4 OP.

Mobil 1 5W30 high mileage synthetic

You're using a deep socket correct?

He's most likely doing a type of 4g swap. The 420a and 4g63 have different orientations.

Bondo is not going to hold up. You need to weld in metal for a permanent fix. You could use a vinyl decal to cover the holes.

The amount of time and money required to swap a 4g into a 420a chasis is just not worth it AT ALL. If you want a 4g63, find a 4g63 shell.

Going to have to run AEM fic as a piggyback then.

Dont do an SRT4 swap or 4g swap.400hp on a 420a is very possible, but it depends if you are able to run megasquirt. Do you have inspection where you live?

If you go under the "Resources" tab, they have a upgrade path guide for 1g's or 2g's if you havent already. You're plan is pretty similar to the "stage 1" upgrades. Find the cleanest shell you can, Rust plagues these cars.

Takes "boost season" to a whole new level lol

Hallman all the way. "High grade" and "cheap" don't go together. A simple knob isn't going to ruin the sleeper look, you can put it where ever you want anyway.

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T)View updates to this DSM profile...

He's just mixed up, hes talking about the 4g63.

Rockautos are around $45, Save your bread. The Smaller udp's are nice(I have the unorthodox racing pulley), but the small gain isnt really worth the cost at all.

Just get an OEM one. Order it from Rockauto.com

No probs, 420a power! Make a "DSM profile" for your car, you can put all your pics/info/plans etc in that for everyone to view. Under "DSM PROFILES" tab up top, then click on "create DSM profile". The "420a, srt, or edz ONLY" is a group on Facebook, just search that and make a request to join...

Also until a dyno sheet is shown, your claim does not stand sorry. Not being rude that's just how it is. Highest whp 420a is 661 and that build is a flatout racecar. Are you a member of "420a, srt, or edz ONLY" on fb? If not id suggest you join.

Calm down buddy. So stock ECU or are you running megasquirt? Please give me a run down, 500whp on a 420a is a bold claim. Crower valves and springs are what you want.

Boosting a 420a will not increase your insurance lol. It's an NA car in their book. You can buy Cobo's turbo kit for $1500, comes with everything you need to safely run 8psi and you wont destroy your motor guessing about what you need to boost. Comes with .50trim Turbo, FMIC, BOV, Piping...

Keep the 420a. Don't bother swapping the 4g.

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T) 420aView updates to this DSM profile...

You get what you pay for, rather pay a bit more for a quality rotor.

Portfueler is overpriced and outdated, megasquirt ms3 is far more superior

too much rpm?? you put it in the wrong gear while racing? lol

Wrathofwalrus updated '97 Mitsubishi Eclipse GS(T) 420aView updates to this DSM profile...

That's exactly why i stopped going to the local meet right down the road from me every Wednesday. Nothing but A-holes who think they know more than you and bash your ride for whatever reason.

It baffles me that you say your making over 500whp yet dont know what parts to get to build the head? No reason to lie on the forums, that doesnt get you help. It takes much more than a hahn kit to get even 300whp from a 420a, let alone over 500 lol. Are you running megasquirt or stock ECU?

No way to make a 420a AWD, 420a and 4g63 are not interchangeable AT ALL. There was once an attempt at a 420a AWD with mini van rear. But that project was scrapped after awhile, LOSS OF INTEREST/TOO MUCH $$$ to make it worth it at all. and over 500whp??? LOL

I have a friend who tells the most BS stories, not about cars, but just completely bonkers. It feeds their egos, and they fully believe their own stories. Shame when people feel the need to lie to impress haha. Popping the hood to inspect lol, that's some California BS. I was working on my car...

Yup, its not a problem for low boost(around 12psi and under). Stock ecu bases timing on intake temps, Higher boost= much hotter air. Wiring in Megasquirt is the best way to control the 420a for high boost setups.

For a simple 8psi build all you need is a 255lph walbro fuel pump and a 12:1 fmu to run safely. (besides obvious turbo bits), which will put you around 220whp.