2G 2g DSM need help in a weird question

[aleelloo]

Came by to ask a question regarding my car 1995 Eclipse GST auto.

It has a Greddy manual boost controller, big 16g Evo1 turbo, HKS BOV, Walbro fuel pump 225lph, AEM regulator.

Anyway my ECU is non-EPROM. People told me its unsafe to drive my car like that and I need to tune my car or otherwise something in my car would break. Is this true?

Could I run my car with the non EPROM ECU and move on with life with no trouble or is it a must to get a 600$+ EPROM ECU with DSMLink v3 and tune it?

Is there anyway around to tune my car without buying all that stuff? (sorry if its stupid question)

 

[802gst]

No you won't blow up your car! You certainly should get some tuning ability but on stock 450cc injectors? you should be fine. It won't run as good as tuned but still make decent power to 16 psi (fuel cut on stock injectors with pump).

an eprom ecu means nothing unless you want to get a base tune or add ecm link. you also don't need an eprom ecu anymore for a 2g dsm. link can added to a non eprom with conversion, I have a 97 ecu with ecm link v3.

you absolutely need a boost gauge, and highly recommend a wideband!
Feel free to pm me if you have additional questions, I was where u are not long ago.

 

[pauleyman]

No you won't blow up your car! You certainly should get some tuning ability but on stock 450cc injectors? you should be fine. It won't run as good as tuned but still make decent power to 16 psi (fuel cut on stock injectors with pump).

Just to clarify fuel cut is not dependent on fuel pump size, boost pressure or injector size. It's dependent on mass airflow. That's why a stock turbo can run 16 psi or maybe more but a bigger turbo would cut at much lower pressures all else being equal.

 

[aleelloo]

No you won't blow up your car! You certainly should get some tuning ability but on stock 450cc injectors? you should be fine. It won't run as good as tuned but still make decent power to 16 psi (fuel cut on stock injectors with pump).
an eprom ecu means nothing unless you want to get a base tune or add ecm link. you also don't need an eprom ecu anymore for a 2g dsm. link can added to a non eprom with conversion, I have a 97 ecu with ecm link v3. you absolutely need a boost guage, and highly recommend a wideband!
Feel free to pm me if you have additional questions, I was where u are not long ago.

Brother thank you so much for your reply i appreciate it. Anyways regarding my car, im fine to run in the streets, nothing will go wrong? ( i dont need to tune or anything) i can run my car and boost on streets with no problems?
And regarding the wideband, you mean the one that shows fuel/air ratio right?

I'm going to google how to convert non eprom to eprom too!

 

[boostdawd]

Yea man u would be fine as long as u keep the boost down since u cannot monitor your air/fuel ratio. Yes, a wideband lets u know about your mixture. If it helps, I ran my gsx with an evo pump and evo 16g on 15psi way back in the day with no tune and daily drove it. Of course to get the most out of your setup, ecmlink is a blast and has expanded my knowledge tremendously.

 

[aleelloo]

Yea man u would be fine as long as u keep the boost down since u cannot monitor your air/fuel ratio. Yes, a wideband lets u know about your mixture. If it helps, I ran my gsx with an evo pump and evo 16g on 15psi way back in the day with no tune and daily drove it. Of course to get the most out of your setup, ecmlink is ablast and has expanded my knowledge tremendously.

By keeping the boost down, you meann about 15 psi? And my other q is, is it possibe to adjust my air fuel and whatsoever on my non eprom?
Is there anything i can do to my non eprom atm? Or is everythn done on an v3 link etc?

 

[802gst]

yah I'm aware of this, I thought we were discussing his set up which is almost the same turbo as myself so knowing from my wallet 190 stock 450s 16-17 was fuel cut!

 

[PlanZero]

If you want to tinker with that setup you can pick up a used safc and some 550-650cc injectors for about $200 total and up your boost safely.

 

[pauleyman]

By keeping the boost down, you meann about 15 psi? And my other q is, is it possibe to adjust my air fuel and whatsoever on my non eprom?
Is there anything i can do to my non eprom atm? Or is everythn done on an v3 link etc?

No. There is nothing you can do to you non eprom ecu. You either get it converted and run link, get an eprom ecu and burn a chip or get an eprom and run link ( no advantage that I can think of).

 

[aleelloo]

If you want to tinker with that setup you can pick up a used safc and some 550-650cc injectors for about $200 total and up your boost safely.

i can install those injectors and run 16psi with no fuel cut? No need to tune?

 

[PlanZero]

SAFC is an acronym for air flow converter. It's a simplistic tuning device and can usually be found for about $100-150 used. You always need a way to tune for bigger injectors on a 2g

 

[pauleyman]

i can install those injectors and run 16psi with no fuel cut? No need to tune?

I don't think you understand how things work. The ECU does not know if you install bigger injectors. It will fire a pulsewidth for whatever airflow it measures and that's that.

If the injector flows more fuel than a stock injector at that pulsewidth (and it will) the ECU does not know this. The car will run rich and will not run correctly.

Short answer, No, you cannot run larger injectors with no tuning solution. You must employ some method of tuning.
This next statement is not meant to be mean but the fact that you're asking if you can do this makes me question what you're trying to do.

We all get it, you want a faster car. I'm telling you this after 25 years of tinkering. Maintenance first. ALWAYS. Learn and much as you can FIRST and THEN and only then mod the car. You have a huge benefit of decades of discussion. When the cars were new those that wanted to tune the car were learning as they go. It wasn't possible to just buy stuff.

Make a plan for what you want the car to do. NOT a list of parts. Work the plan. After you read and you still don't understand then you can form decent questions. Hope this helps.

 

[Coppermitsu]

You'll be okay assuming you keep lower boost levels, to much fuel/running rich is almost as bad as running lean/fuel cut or knock. All that extra fuel will wash the oil off the cylinder walls then mix with your oil (check n see if you have gas in the oil it'll be real thin and you'll smell it) that'll wipe your gaskets n bearings out real quick.

If you don't wana run ecmlink these are decent budget friendly options that'll work for you, zetronix for a datalogger n gauge for air fuel ratio. Apexi neo-piggyback fuel tuner or older versions of that are apexi safc n safc2. People ran the safc's for years before ecmlink

 

[boostdawd]

By keeping the boost down, you meann about 15 psi? And my other q is, is it possibe to adjust my air fuel and whatsoever on my non eprom?
Is there anything i can do to my non eprom atm? Or is everythn done on an v3 link etc?

Yea stock boost will be fine(14-15). There's really nothing u can do to your current ecu. As mentioned u need to be careful when missing your car and do it right. Putting bigger injectors will not benefit u if u can't control them. An SAFC helped me up to 19psi before I got ecmlink. U still need a wideband to monitor your afr and a logger to check timing and knock. Save up. If you really want to learn and make your car faster SAFELY, Take care of maintenance first. Then set a goal of what ur wanting your car to do.

 

[Coppermitsu]

Yea stock boost will be fine(14-15). There's really nothing u can do to your current ecu. As mentioned u need to be careful when missing your car and do it right. Putting bigger injectors will not benefit u if u can't control them. An SAFC helped me up to 19psi before I got ecmlink. U still need a wideband to monitor your afr and a logger to check timing and knock. Save up. If you really want to learn and make your car faster SAFELY, Take care of maintenance first. Then set a goal of what ur wanting your car to do.

You'd be fine with that what fuel psi your running, I'm more worried your flooding the car out with fuel vs running it lean and getting fuel cut,knock, ect. Reason I say that because you'd be asking a different set of questions. And yes all those options I said earlier is what your looking for, personally being new to tuning I'd recommend zetronix they will sell you a package with everything you need to adjust what you should. It's budget friendly as far as tuning software goes and a lot of people use it so you can YouTube a lot of questions n answers and get a real good idea of the do's n dont"s