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ECUflash 98 GS ECU flash to GST tune

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lsever6

Probationary Member
5
0
Oct 14, 2024
ebensburg, Pennsylvania
I have a 98 Eclipse Spyder GS 4g64 that I’m swapping a 4g63t into, could I just reflash the ECU with a stock GST tune?

If so can someone pm me the stock tune or point me in the direction to find it?
 
I would keep the GS computer because it triggers the fuel pump differently. You need to add the knock sensor and injector resistor to make the 4g63T work. You can refresh it with the GST tune fine. I am using one in my turbo swapped 1g with a jumper harness.
 
I would keep the gs computer because it triggers the fuel pump differently. You need to add the knock sensor and injector resistor to make the 4g63T work. You can refresh it with the gst tune fine. I am using one in my turbo swapped 1g with a jumper harness.
i also have a walbro 255 in the other car and it is a running car would it be a matter of just switching the stuff because i have thicker wiring for the fuel pump too
 
If you’re running a 255 as well you might want to look into just getting ECMLink, going to save you a lot of time & money for the future.
I was looking into it. I have a EPROM, I just don't want to get it chipped and spend 600-800 on that. I have everything to tune the car as it sits and I have 2 full cars of parts to work with so the point is to do it on a budget as far as it goes.

I have general knowledge on tuning the car on openport with the black box. The motor is nothing entirely crazy the only reason it needs a retune besides from using the 95 ECU is that it has a 16g that I run at 24 psi and it hits boost cut so I'm putting 650 or higher injectors in and doing a tune myself because I have general knowledge of tuning with AFR. It also has 272/272 and idles extremely rough so it needs some adjustment down low.
 
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