Hello everyone. I am new to the world if DSM. I recently bought a 98 GST. With a mess of stuff done to it. Needless to say though I am completely lost. The guy I bought it from had no clue what has been don't to it. This is what I have learned so far... 98 gst 5speed, 640cc injectors, 255lph fuel pump, ngk plugs, t25 turbo, 2.5" intercooler tubing, BLOX fpr system, full suspension from shocks/struts - springs- bars and braces, lightweight flywheel, ACT 6puck clutch, some kinda aftermarket BOV, VooDoo MBC, aftermarket aluminum radiator and electric fan. Problem is there is a rats nest of wires and sensors unhooked and that I am LOST! Any help would be huge huge help. I am even offering anyone close to where I live some cash to come assist. You guys tell me what u want photos of and I will send them. I got the car for 850 and I always loved the look of G2 eclipses.

You can find all your questions on here there is a write up with pics on what connectors are for what. Use google to search and type dsm after what you ask. If you don't have tuning software or device for your car, I wouldnt drive it around with 640cc injectors. That's to much for that little t25. Find a set of 450cc (stock) and FYI do all your maintenance before you hop this thing up. Don't froget to do a compression test to see if it's worth dumping any money into it.

Well it also came with a 16g turbo too and a t4... Also it has an egr delete but the solenoid is ran between the turbo in the actuator. Do I need to keep that or can I put the voodoo boost controller in there that came with the car?

you can unhook it and go with your mbc. What are you tuning with?

I am glad you asked that gofast63. I was going to ask what programming or tuning software I should go with? Sorry I built domestic tuners for awhile so the 4g63 is an all new beast to me . Also is the AEM stand alone worth it's money? And lastly what would the most boost the t-25 is most efficient at producing. Like my cobalt as I had had a t3/4 hybrid but really only was good running 25psi anymore it just fell off.

Compression test btw came back good. And after a load and letting off the car bogs down before respool. The previous owner had the bov to atmosphere instead of refer back to the intake. Are the ecu in the 4g63 like my Colbalt where it sets itself to compensate for the BOV air? And if so is that what is causing the face plant?

FrankinGST said:

Compression test btw came back good. And after a load and letting off the car bogs down before respool. The previous owner had the bov to atmosphere instead of refer back to the intake. Are the ecu in the 4g63 like my Colbalt where it sets itself to compensate for the BOV air? And if so is that what is causing the face plant?

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You have to recirculate the bov. I wouldn't be driving it around your just asking for trouble. You need a wideband and a safc at least. But honestly if I were you I would get 450cc injectors and do my homework on these cars first. I'm from domestic cars my self. But there's ALOT to know about these turner cars. The t25 tops out at about 15-16psi if I remember right. 16gs have soo much more pull. I only ran mine for a week and went back to my 16g. The face plant is because to have a boost leak. Also you can't go cheap on these cars.

FrankinGST said:

I am glad you asked that gofast63. I was going to ask what programming or tuning software I should go with? Sorry I built domestic tuners for awhile so the 4g63 is an all new beast to me . Also is the AEM stand alone worth it's money? And lastly what would the most boost the t-25 is most efficient at producing. Like my cobalt as I had had a t3/4 hybrid but really only was good running 25psi anymore it just fell off.

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Everyone here is going to scream dsmlink. (ecmlink) same thing. I would recommend that to you as well. Since its user friendly and cheap

Yea there was a major boost leak issue. The previous owner torn intercooler pipe and patched in with exhaust tubing and high volume rubber water hose smh I have a whole new intercooler and completely replaced all the piping. BOV reconnected, and I will switch over to the 16g. And I will look into the dsmlink. Also no issues putting money into one of these ALWAYS wanted one so finally got one.

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