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New to 4G63. Have a few Fuel System ??'s

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E-CLIPS97

20+ Year Contributor
295
1
Jan 8, 2003
Eagle mountain, Utah
Ok, I have had a few DSM's in the past but this is my first Turbo version. I am not planning on going crazy looking for insane power. What I am looking at doing is:

Cat-Back
Injen Intake
HRC SMIC
IC Hard Pipes(Upper and lower)
And a big T-28

What I am curious to know, is if I need to upgrade injectors and/or fuel pump, or if the stock fuel system can handle those upgrades? If upgrades are necessary, I am open to suggestions. I wouldnt ever plan on running much more boost over stock...maybe in the neighborhood of 15 or so.

Thanks
 
I think your injectors would be fine. For what it costs ($95) I would upgrade your fuel pump and get your self a downpipe and a safc to go along with what you want and you will be pretty happy.
 
As far as the downpipe goes, I dont want to increase any more noise level than I have to. Will it affect the level of noise for the exhaust? I can handle do the fuel pump. I dont know how to tune/calculate an S-AFC....so if I get one, I wouldnt be sure I know what to do with it....
 
E-CLIPS97 said:
As far as the downpipe goes, I dont want to increase any more noise level than I have to. Will it affect the level of noise for the exhaust? I can handle do the fuel pump. I dont know how to tune/calculate an S-AFC....so if I get one, I wouldnt be sure I know what to do with it....
I'm sure it will make it louder, but then again it all depends on what kind of exhaust you go with. I've heard that RSR is very quiet and very nice quality.
If you get a safc your best bet is to take it to a shop and have them dyno tune your car.
 
I found you on here, I searched site members under springville.. :thumb:

For that setup I would go with the 190 pump and then safc when you upgrade turbos. Downpipe will make it louder and eliminate the cat depending on which pipe you get.
 
Don't bother with a SMIC. The benefits aren't large enough from the stock SMIC to make a difference. And espically for the price, a decent "street" FMIC will reap much more.

Also try checking out some smaller companies for an intake/intercooler pipes and exhaust.

Dejonpowerhouse.com is an awesome company for DSM parts. I've got their UICP and intake as well as their full 3" cat-elim exhaust. It's awesome, but LOUD!

I agree about the 190 and a rewire on the pump. It's always a good idea. And if you're only going to run 15 or so psi you should be fine with stock injectors. It does depend on what turbo you go with if you upgrade. Because 15psi on a T25 is MUCH different than say 15psi on a 20g or an E316g. On a t28 though, i'd maybe get an safc and 550's or 650's just to be safe. The 190 should be fine for that boost with that turbo though.

Good luck with the new ride, and welcome to the club!
 
MitsuGSX97 said:
I found you on here, I searched site members under springville.. :thumb:

For that setup I would go with the 190 pump and then safc when you upgrade turbos. Downpipe will make it louder and eliminate the cat depending on which pipe you get.

Whats up!

I will go with the 190. I dont want to eliminate the cat, but I see that Buschar has a downpipe that doesnt eliminate the cat, but offers a better cat in its place. I may check that out.
 
staticbrainwash said:
Don't bother with a SMIC. The benefits aren't large enough from the stock SMIC to make a difference. And espically for the price, a decent "street" FMIC will reap much more.

Also try checking out some smaller companies for an intake/intercooler pipes and exhaust.

Dejonpowerhouse.com is an awesome company for DSM parts. I've got their UICP and intake as well as their full 3" cat-elim exhaust. It's awesome, but LOUD!

I agree about the 190 and a rewire on the pump. It's always a good idea. And if you're only going to run 15 or so psi you should be fine with stock injectors. It does depend on what turbo you go with if you upgrade. Because 15psi on a T25 is MUCH different than say 15psi on a 20g or an E316g. On a t28 though, i'd maybe get an safc and 550's or 650's just to be safe. The 190 should be fine for that boost with that turbo though.

Good luck with the new ride, and welcome to the club!

The reason I was going with a SMIC was because A)I like the sleeper look, B)I havent seen a FMIC on a 2gA bumper(talon specific)that I liked, and C) the only way to avoid (B) is to do a eclipse 2gB conversion which I dont want to drop that much coin on the appearance just so I can add a FMIC.

If I add 550's and a SAFC, will I need any type of upgraded FPR or anything?
 
staticbrainwash said:
Don't bother with a SMIC. The benefits aren't large enough from the stock SMIC to make a difference. And espically for the price, a decent "street" FMIC will reap much more.
BS. I know plenty of people running upgraded SMIC's that are working flawlessly for them. Whether it be a Supra or a Dejon, both are great SMIC's. Another wiseman on the boards (andymoraitis) is running a B16G, Comp 200 cams, 190, 550's, etc, w/ the Dejon Sidemount. He drives the car daily at 24-25 psi w/ no heatsoaking issues whatsoever. The best part of all he got the SMIC for $200. There are good deals to be found out there, Supra SMIC's are not hard to get a hold of and are quite a bit larger than stock, and have proven to work great. Just upgrage your IC piping along the way and you have a great, lower cost setup.
 
Thats just it though, he never said he wanted to look stock. So ok, thats fine. The main reason i brought up the FMIC option was because for people who don't want to worry about messing with Supra endtanks or trimming or cutting the SMIC area, a FMIC is a great option. I know there are people who are running dejon's and supra's with great sucess, but for his t28 goals of 15psi, the stocker should do just fine. As for cost, a new dejon with L & U ICP is just as expensive as a decent sized FMIC. But i understand what he wants now.

I was going to go the SMIC way for a long time. I didn't want to mess with possible overheating issues that sometimes come with a FMIC. Then i priced everything out and it just doesn't seem worth it to me to run a smic with the cutting hastles. It's all my opinion.

But if you do wanna stay stock looking and keep a side mount, i say go with the dejon. Unless you can find a supra with the end tanks already flipped. I'd still worry about that though, because if memory serves, supra end tanks are plastic.

Anyway, i wasn't being ignorant about the SMIC upgrades. To me it just doesn't seem cost effective (unless i could find one for real cheap or get one used). I apologize if i sound uninformed, i didn't know he wanted a stock look. I should have added a "IMO" to the end of that smic section.
 
Back to the original poster. No you should be fine without an AFPR with a walbro 190. You usually only need to worry about an AFPR with the 255's, or if you find the 190 is over-running your stock fpr.
 
BTW, do you guys think he really needs more than to rewire his stock pump? He's not going to bigger injectors and stock 450cc injectors won't give him ehuogh fuel to run over 15 psi safely anyway. The stock fuel pump rewired has been known to do just fine for that level... Why spend the $100 on a fuel pump... Unless it's going out.
 
Well, I wouldnt mind replacing the fuel pump. Car has 120k on the clock, so alot of stuff at this point is as much preventative maintanence as it is upgrading. For something as important as fuel, I wouldnt mind being a little "overkill" just to be safe.
 
E-CLIPS97 said:
Well, I wouldnt mind replacing the fuel pump. Car has 120k on the clock, so alot of stuff at this point is as much preventative maintanence as it is upgrading. For something as important as fuel, I wouldnt mind being a little "overkill" just to be safe.

Good way to look at it. Besides, I bet you're going to want more out of this car within the year. . .:thumb:
 
190 fuel pump on STOCK wiring, trust me you dont need to rewire it. I havnt had to do mine yet.

Dont get an AFC, waste of money till you get larger injectors and plan to run more boost than 15psi. What you list is fine, the only thing i would add is a downpipe.

Also i have the RSR exhaust and its quiet, by far the quitest exhuast for a dsm. Muffler + 2 ressonators sounds find with no cat, and the cat even quiets it down some more.
 
Thermal is supposed to be pretty quiet too. But pricey. If you're not worried about sound i'd check out the dejon exhaust. i got mine for less than 500 shipped (DP and catback). or for a little more you can get options to quiet it down.
 
I also wonder if you need afpr on the walbro 255 low pressure or just the high pressure and pretty sure like was said dont need one on the 190.but an afpr can let you make those 450s think they are bigger.
Also think you can easily run 17 or more on the stock injectors with a 14b. You should of course have a logger type thing.
Also i would be very careful of going to a downpipe that doesnt use a cat.I put in apexi n1 catback and downpipe as basically first mod in my 92 with 14b and the boost creeped to like 20psi!! I bought fuel mods to be able to handle the higher boost safely but be warned.Another guy I know just put on custom fabbed up 3 inch system no cat..same deal he hits over 17 easily with no boost controller!!
We are doing same for him..giving him proper support mods so his car can survive at that level.
And yes think bigger fmic are pretty much overkill on a 14b.and 550s should be lots or an afpr on even 450s.
 
If you're careful and get a 2.5"-3" DP you should be ok. If you creep, just port the o2 housing and wastegate area on your turbine houshing. Or like said before, get an safc and push a little more fuel with new injectors.

Yes you will need a afpr on a 255, either high press or low press. Unless you've got an safc to controll fuel when you start running real rich.

I honestly wouldn't try to run that much boost on a stock fuel system. 15 is fine but i don't think 17-20 is a good idea. Log it maybe and see, but i bet you'll knock REAL BAD with that little fuel and that much boost. I'm also SUPER careful with my motor so i don't know.

I'd go with 550's just to be safe, a 190 would be fine, and an safc. A bigger SMIC is alright, or a small FMIC (which is not overkill on a T-28 or even a 14b). I agree about the Injen intake, way too much cash for what it does, i'd ebay it or go to dejon (still pricey) or to straightlinespecialties.com. Dejon or straightline for intercooler pipes, and dejon for a cheap (but awesome) o2 back exhaust. Also, if you're going to pull the turbo, I would port the o2 and the new turbine housing on the turbo just in case (and you'll just help flow).
 
1993eclipseGS said:
Don't waste your money on the Injen intake, Get the no-name intake off ebay for the 95-99 turbo, It'll have the same effect without the sticker.

I already bought an Injen Intake from a member here on tuners. BEAUTIFUL CONDITION!. Got a great price. Its been my experience that ebay intake are of poor quality. I speak from experience. I have bought ebay intakes for my Tacoma, Grand Cherokee, 300zx, and Eclipse GS. ALL of them sucked. I dont mind spending the extra money for something a little nicer.
 
staticbrainwash said:
I honestly wouldn't try to run that much boost on a stock fuel system. 15 is fine but i don't think 17-20 is a good idea. Log it maybe and see, but i bet you'll knock REAL BAD with that little fuel and that much boost. I'm also SUPER careful with my motor so i don't know.

I'd go with 550's just to be safe, a 190 would be fine, and an safc. A bigger SMIC is alright, or a small FMIC (which is not overkill on a T-28 or even a 14b). I would port the o2 and the new turbine housing on the turbo just in case (and you'll just help flow).

Agreed. I think 550's with a 190 and safc just to be safe. Especially if the boost bug bites and I want to turn it up a bit. Any suggestions on a Small Fmic and piping. I dont want to custom fab piping to make it work. I would prefer a "Kit" made specific for our vehicles..:thumb:
 
Looks like you want to upgrade the pump, which is a good idea. Go with the 190, they can support 400 hp and you can run them with the stock fpr which will save you a few hundred. When your in there defently rewire the pump, its cheep & easy to do and gives you some extra insurance. The pumps output is directly related to voltage and with stock wiring you will probably abit less then 12 volts even when the cars running, where as with a rewire you will see ~14.4. I believe RRE has pump tests listed on their website with different test voltages so you can see exactly what Im talking about. If you want to keep the boost low, like you had origionally sai ~ 15 psi, you can get away with just those upgrades on the fuel system. Later on if you descide you want to turn up the boost abit you can always add larger injectors and something to control them with.

As for the exhaust, yes a downpipe will make it abit louder but it is something you should really look at. The factory DP is a pretty big restriction, the best exhaust on a turbo car is basically no exhaust. Free up the exhaust restrictions & you will gain some nice HP as well as spool time on the turbo. I wouldn't worry about the car being to loud, turbo cars aren't like NA cars, they are much quieter. A HF cat will also cut down on even more noise. I run 3" all the way back with a HF cat & Apexi N1 catback & can say the car is pretty quiet. At idle I tested it at 83 db, which is comparable with most passenger cars. My old man's 95 vette with stock exhaust tested at 89 db.

I know your looking for the sleeper look but a fmic is something to really consider if you want to turn that boost up over ~15 psi. I ran a HRC SMIC for abit and it seemed to work fine at the time but once I upgraded to my FMIC a noticed a huge difference, both in flow and the butt dyno. Theres a big thread on one of the Ebay fmic's, that I don't think you have to do to much hacking and can be had for a really good price, maybe you should look into one of those setups.
 
staticbrainwash said:
http://www.diamondstarmotorsport.com/fmicparts.shtml

That will be my FMIC when i upgrade. Uses you're SMIC piping and is a pretty decent size. Or slowboy has a decent "street" FMIC too. Check out the Sponsors section and look through their sites.

Sounds like you've got things comming together really nice here man, good luck!

Can a 1G kit be used on a 2G?
 
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