upgrading 97gst need help

[97gst5887]

i have a 97 eclipse gst, i need to know what i need for upgrades to run about 20psi, other then turbo, fuel pump and injectors

 

[smellmyface686]

You need some kind of boost controller, and an afc of some sort if you want it to run correctly. Other than that i think you got it. Go grab a copy of DSMlink and get your ECU chipped, because even with the supporting mods and 20psi, the car won't be close to full potential without some way to tune. You will probably need a clutch too if you want to be able to actually get on the throttle without slipping.

 

[97gst5887]

i got a boost controler, stage 2 clutch, and the bottom end of my motor is rebuilt all forged internals

 

[snowborder714]

First off you should get a logger and some sort of tuning device. This will depend on how much money you want to spend and how big of injectors you plan on going with. But, contrary to the above post, you can't just go get your ECU chipped if you want to run DSMlink. You'll need an EPROM ECU from a '95. But DSMlink will come highly recommended from most people on here as it's a logger and tuner in one and you can run any size injectors you want.

Depending on what fuel pump you get, you should probably get an AFPR as well. Also rewire the fuel pump.

 

[smellmyface686]

Oh so it does have to be an eprom ecu? I thought that you could ship yours off to DSMLink and they would chip it for you, no matter what year. So that adds about an extra $100-150 to the price of getting DSMLink up and running... guess it's time for a third job

 

[DSMinn0vati0ns]

i would add in some ARP head studs for some safety

 

[97gst5887]

my motor is getting built right now, botom end all forged, steel vavles, arp bolts, metel head gasket and more

 

[kiddsm95]

Why only 20 psi with a fully built motor? Might as well put it to use and crank it up to 30 psi.

 

[kmoore]

Why only 20 psi with a fully built motor? Might as well put it to use and crank it up to 30 psi.

No your just flat out wrong. Please don't post wrong information.

What I don't understand is that you got this so called "built" motor but you don't want to add any kind of fuel pump or injectors. Or do you already have those?

If so, DSMLink, like what others have said, Wideband O2, and you should be set to run 20 psi safely. Yet this all depends on what the size of the injectors are and the fuel pump. What is the turbo that you are running?

 

[welfle18]

Yeah I agree with the above post if you got a fully built motor why not turn the boost up a bit more. This depends on what turbo your running and what kind of tune you can get out of your setup though. You will need an AFPR with a bigger fuel pump or you will over run the stock.

 

[kmoore]

Yeah I agree with the above post if you got a fully built motor why not turn the boost up a bit more. This depends on what turbo your running and what kind of tune you can get out of your setup though. You will need an AFPR with a bigger fuel pump or you will over run the stock.

What you and Kid don't realize though is, it's not as easy as just "turning up the boost."

You can't just say, "Hey he's got a rebuilt motor, so why don't you turn the boost to 30psi."

No. It doesn't work like that. You need to tune for that type of boost level. Looking at timing curve, A/F ratios, etc. But before you just "crank up the boost" you first and for most needd to have the supporting mods. Thats what I'm asking from the original poster.

 

[welfle18]

I know and like I also stated is that it is all in the tune. If you have the correct tools to properly tune your setup turning up the boost would be a way to gain some power. But in no way do I mean just crank up the boost and hope for the best. DSMLink is a great way to tune. I am sorry if my previous post was misleading. Wideband O2 and a A/F gauge is a good tool to keep track on your A/F ratio.

first and for most needd to have the supporting mods. Thats what I'm asking from the original poster.

This would be the biggest thing to know if you want to get the most accurate answer. Otherwise there could be millions of different responses which none could be what is good for your setup you know what I am saying!

 

[ILLegit420aT]

the mods dont mean jack untill you have a setup...you could have a turbo as big as your head, and injectors that shoot like a fire truck...without a good tune you go nowhere...i'm learning that as i try to tune my 97 gs myself

 

[97gst5887]

i have a fuel pump and working on getting injectors, i have an evo 3 turbo, i got the car with most of the parts that are in it right, i had it a couple of days and spun a bearing, so i choose to have the motor built

 

[welfle18]

What goals do you have for the car. Is that the last turbo you plan running on the car, HP goals, have you thought about any of these. These will also help to determine what upgrades to get also.

 

[kmoore]

i have a fuel pump and working on getting injectors, i have an evo 3 turbo, i got the car with most of the parts that are in it right, i had it a couple of days and spun a bearing, so i choose to have the motor built

What kind of fuel pump (190, 250, etc.)

And all your questions to run 20 psi have been answered if you would have searched. But anyway Ill just break it down

If you plan on running the S-AFCII & Logger Combo:

Maximum of 650cc injectors
190 fuel pump
If you plan on getting a 255 you need an AFPR
Wideband O2 (not that necessary but it will most definitely help you)

If you plan on running DSMLink:
Any injectors you want
If you get above say 650 injectors you will need a 255 pump
If not than stick with the 190
Wideband O2

Both of these setups will make you run 20psi SAFELY

 

[hubz91talontsi]

Im going to try to hit 300awhp with
small16g
550 injectors
c16 =)
Meth kit
Supra Intercooler
Safc and pocketlogger

Of course im going to be running around 23psi on c16. Going to take quite the tuneing but should be fun im still learning. Only 17; first car 300awhp = bad idea on my parents insurance plan =)

 

[kiddsm95]

No your just flat out wrong. Please don't post wrong information.

What I don't understand is that you got this so called "built" motor but you don't want to add any kind of fuel pump or injectors. Or do you already have those?

If so, DSMLink, like what others have said, Wideband O2, and you should be set to run 20 psi safely. Yet this all depends on what the size of the injectors are and the fuel pump. What is the turbo that you are running?

I didn't realize that there was no EMS on his built motor, bad assumption on my part. So as K stated above you'll need to take one of the two routes defined.

As for the amount of boost on a built motor with EMS, surely >20 psi can be achieved with plenty of margin for safety right? Aren't a lot of people running 18-20 psi on 7 bolts with stock internals reliably?

 

[Twistaye]

Listen to Kmoore, he's given you all the advice you need, and everything he said I have to agree 100% on, kudos to him

 

[DIS1KRAZY]

I like to try and cut no ends but, i know everyone doesn't have deep pockets, not say that i do, but... I would build the bottom end first and then get some type of engine managment system, to tune the upgrades of injectors, turbo, etc. A boost controller could help. I know that seems like the long way, but its a good way.

 

[97gst5887]

i plan on going to get a bigger turbo someday my goals are to get over 400hp

 

[welfle18]

Well if it were me I would structure my upgrades on making the desired HP goals. That is what I am doing right now but thats me. Better to buy parts once instead of keep upgrading and spending more money you know. Like posted above not everyone has deep pockets on here so saving money in this way might help you reach your goals quicker. My .02 though.

 

[97gst5887]

i bought the car the way it is besides the the motor rebuild, camper kit

 

[Defiant]

Because every newbie who gets a DSM wants to post this exact thread, we have a TECH GUIDE linked on the very first page of this site. But somehow, still, it seems to always get missed. So, here:
Tech Guide - DSMtuners