420A My little FPBT28 420A Turbo project

[Prodigyman]

I just got 97 Eclipse GS as my winter beater and after driving my GSX this summer this thing is tooo slow I really have NOO clue about these neon engines but I have this idea , since I updated my GSX to Evo III and full fuel mods and everything I had a lot of spare parts from GSX lying around like FPBT28(10 000 km) with Hybrid Connection 2.5” O2Housing , 450CC injectors, 190 FP and more

You guys think if I eBay exhaust manifold (or remake one for Mitus fitting) and get some cheap FMIC kit I’ll be able to do it? I think I’ll need some sort of new oil delivery line also. If I add these mods and let’s say run 5PSI on stock engine (which just got rebuild BTW) + 450CC I should be able to do it without touching the engine?

My main question is with 4G63 50% of power is in a tune… how do you guys tune your T420A? SAFC?

I appreciate your suggestions

 

[DSMcrazy3]

There is quite a bit of information already in the 420a-T forum that you can easily access with the search button.

Most of your questions have already been answered as well.. but I'll be a gentleman.

Basically the only thing you can use from your GS-X is the turbo. Nearly all 420a-t manifolds place the turbo in front of the engine, up at the top. As opposed to the 4g63 where it's faced down, so that means the o2 housing won't work, the outlet would face the radiator instead of the ground. The injectors would work...but you would need a resistor box in order to use them.

There are a few manifolds for sale on Ebay these days. Shouldn't be too hard to find one. I just ordered one from Treadstone and I love it.. Anyways, since the 420a was just rebuilt, granted it was broken in properly, you should be fine. Especially boosting only 5 psi, you should be.

SAFC is basically worthless for the 420a. Most popular way of tuning for us would be Megasquirt.

 

[VelocitàPaola]

You guys think if I eBay exhaust manifold (or remake one for Mitus fitting) and get some cheap FMIC kit I’ll be able to do it? I think I’ll need some sort of new oil delivery line also. If I add these mods and let’s say run 5PSI on stock engine (which just got rebuild BTW) + 450CC I should be able to do it without touching the engine?

Sure. At only 5psi, you won't even need those injectors.

I suggest you do a little more research on here and at 2GNT.com to get a general idea of what you're in for. Most of the things you listed will be usable, however, the O2 housing will have to be ditched.

The S-AFC doesn't really do much for the 420A platform, so we use physical means of adjusting fuel, like the FMU or S-FMU until we get to levels that necessitate the use of standalones (most frequently Megasquirt, but also AEM-EMS and Haltech). I suggest you use an FMU with your stock injectors for your goals.

Mounting and routing piping for an eBay FMIC, as you probably know, is hit or miss for any car really, so that shouldn't be anymore of a problem for this car than it would be for your GSX. And you're right about the oil lines, you'll need to install a 3/8" tee between the block and your oil pressure sending unit, and run your feed line from there. You'll need a fitting welded, or otherwise installed on the front of your oilpan for the return line.

 

[Prodigyman]

There is quite a bit of information already in the 420a-T forum that you can easily access with the search button.

Most of your questions have already been answered as well.. but I'll be a gentleman.

Basically the only thing you can use from your GS-X is the turbo. Nearly all 420a-t manifolds place the turbo in front of the engine, up at the top. As opposed to the 4g63 where it's faced down, so that means the o2 housing won't work, the outlet would face the radiator instead of the ground. The injectors would work...but you would need a resistor box in order to use them.

There are a few manifolds for sale on Ebay these days. Shouldn't be too hard to find one. I just ordered one from Treadstone and I love it.. Anyways, since the 420a was just rebuilt, granted it was broken in properly, you should be fine. Especially boosting only 5 psi, you should be.

SAFC is basically worthless for the 420a. Most popular way of tuning for us would be Megasquirt.

It's my bad that I didn't read GSGoinFast guide earlier, I appreciate for the response. I just had this idea pop to my head and wanted to pass it by you guys to see what I can utilize but everything was explained in GSGoinFast guide. I should of known how to search that by now
As for the turbo, yeah I didn't realize it would be kind of upside down so I'll probably fabricate something custom of my own. I just don't want to eBay some cheat turbo and have this FPBT28 go to waste

 

[VelocitàPaola]

It's my bad that I didn't read your guide earlier, I appreciate for the response. I just had this idea pop to my head and wanted to pass it by you guys to see what I can utilize but everything was explained in your guide. I should of known how to search that by now
As for the turbo, yeah I didn't realize it would be kind of upside down so I'll probably fabricate something custom of my own. I just don't want to eBay some cheat turbo and have this FPBT28 go to waste

His guide? I think you're disgracing the real author of that guide (Chris) by giving all the credit to Josh.

Anyway... I think you'll either need a Street Source manifold, or some other custom one, since all the cast manifolds (i.e. Treadstone, Star) have a T3 flange. That FP T28 you have probably has an MHI style flange, which isn't compatible.

 

[Prodigyman]

Sure. At only 5psi, you won't even need those injectors.

I suggest you do a little more research on here and at 2GNT.com to get a general idea of what you're in for. Most of the things you listed will be usable, however, the O2 housing will have to be ditched.

The S-AFC doesn't really do much for the 420A platform, so we use physical means of adjusting fuel, like the FMU or S-FMU until we get to levels that necessitate the use of standalones (most frequently Megasquirt, but also AEM-EMS and Haltech). I suggest you use an FMU with your stock injectors for your goals.

Mounting and routing piping for an eBay FMIC, as you probably know, is hit or miss for any car really, so that shouldn't be anymore of a problem for this car than it would be for your GSX. And you're right about the oil lines, you'll need to install a 3/8" tee between the block and your oil pressure sending unit, and run your feed line from there. You'll need a fitting welded, or otherwise installed on the front of your oilpan for the return line.

Thx for the info

So let me get this straight…
I get exhaust manifold and modify it to fit my T28
On my FPBT28 fabricate exhaust side pipe to route to my DP
Install FMIC and route the pipes easily + BOV
255/190 FP + FPU Install
Oil Lines as per GSGoinFast guide
+ all the appropriate gauges of course
Set MBC to like 5-7 PSI and I am done? No tune no nothing and FPU will take care of everything?


How reliable would it be @ 5-7 PSI since this is my fall/winter daily driver and stock what… 250CC injectors can handle it? Wouldn’t ECU go crazy if it seems boost in NA engine or I think too much in 4G63 terms?

It sounds too good to be true

 

[Prodigyman]

His guide? I think you're disgracing the real author of that guide (Chris) by giving all the credit to Josh.

L O L…Yeah I realized it few min after and edited it! Since his car looked just like Chrises I and didn’t look @ his name

That FP T28 you have probably has an MHI style flange, which isn't compatible.

Yeah it is MHI style but I’ll figure it out somehow


I’ll probably should take out my 17 PSI internal wastegate from my FPBT28 too and find like 5 PSI one or something otherwise first go and GG motor

 

[VelocitàPaola]

Thx for the info

So let me get this straight…
I get exhaust manifold and modify it to fit my T28
On my FPBT28 fabricate exhaust side pipe to route to my DP
Install FMIC and route the pipes easily + BOV
255/190 FP + FPU Install
Oil Lines as per GSGoinFast guide
+ all the appropriate gauges of course
Set MBC to like 5-7 PSI and I am done? No tune no nothing and FPU will take care of everything?


How reliable would it be @ 5-7 PSI since this is my fall/winter daily driver and stock what… 250CC injectors can handle it? Wouldn’t ECU go crazy if it seems boost in NA engine or I think too much in 4G63 terms?

It sounds too good to be true

You should be good to go with a 12:1 FMU and the stock fuel injectors (which I believe are about 1900cc/min).

About that manifold, you'll have a very hard time modifying cast metal. If you buy a manifold from the Street Source, you can have it already set up for an MHI flanged turbo. No modification necessary.

You will however need to fab up a downpipe, but that's easy enough with a mandrel bent 2.25" U-bend and the right flange.

And you were right about the FCD. I actually make them for 2GNTers that need them, so drop me a PM or e-mail.

 

[Prodigyman]

One last thing… what about Risk Vs Reward aka HP vs Reliability, because when I hear neon engine, I don’t have any good thoughts coming to mind.

With my current planed setup is it really worth that extra what 50-60 WHP (if that) even with rebuild engine to have it on a daily driver or people here have them running at low PSI (like 5) for years with no major problems, counting the fact that everything got installed properly?

Thx again guys, as soon as I am done converting this talon to eclipse front/sides/back and new paint job I’ll start on this project and post some before and after pictures when I am done in spring.

 

[BigRand]

Just so you know man, you probably won't need a manual boost controller, so spend the money on finding a 7psi wastegae spring, and hopefully with the 1 or 2 psi drop from the FMIC.

P.S. What part of toronto are you from, I"ve got family there and used to live there, drop me a PM.

 

[VelocitàPaola]

Reliability won't be an issue at such low boost. Plenty of us have boosted our cars, and almost everyone who stays at 5psi or less doesn't suffer from any more reliability issues than those who left their cars N/A.

 

[Prodigyman]

Reliability won't be an issue at such low boost. Plenty of us have boosted our cars, and almost everyone who stays at 5psi or less doesn't suffer from any more reliability issues than those who left their cars N/A.

You have no idea how much I wanted to hear that

 

[BigRand]

You have no idea how much I wanted to hear that

If its your winter car, just watch the weight of your oil, get a turbo timer for it as well, and dont' forget to let it warm up.

 

[DSMcrazy3]

If its your winter car, just watch the weight of your oil, get a turbo timer for it as well, and dont' forget to let it warm up.

Lets not forget that he isn't new to turbo'd engines.. Just the 420a

 

[BigRand]

Lets not forget that he isn't new to turbo'd engines.. Just the 420a

Agreed, Just wanted to remind him that even though its a 420a, and is his 2nd car, it's still a dsm and still needs a lot of TLC, espcially when turbo'd.

I dont' think I meant to just direct it at him, more as a general, statement that people should know, and just wanted to remind them before it gets really cold.

 

[Prodigyman]

Agreed, Just wanted to remind him that even though its a 420a, and is his 2nd car, it's still a dsm and still needs a lot of TLC, espcially when turbo'd.

I dont' think I meant to just direct it at him, more as a general, statement that people should know, and just wanted to remind them before it gets really cold.

It ain't that cold in Toronto and yeah when I got this car I still got freaked out eveytime I took the keys out and car would turn off due to absence of turbo timer or when I press remote starter and after I finish my quick breakfast, go outside and my ESI still off, where my GSX gasenvagens my garage ! I still do it sometimes when its early class and I am half asleep