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Fuel system upgrade?

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T is for TURBO

20+ Year Contributor
2,250
25
Jan 15, 2005
Milwaukee, Wisconsin
So, I will be upgrading the turbo soon, Im going to the FP Big t-28. I also will be getting a FMIC in the mail anyday. I have a cat back and new BOV and upgraded clutch. What should I do about the fuel system? should I up the injecter? fuel pump? what PSI would you guys recommend? Im FWD so I don't plan on making huge power, I just don't want to lean out. Suggestions?
 
Id go with the 650s (easier to tune) and Id get a 190lph fuel pump. You wont need an AFPR, and you should be able to tune this with just a SAFC, but if I were you Id atleast get the GM MAF and MAFT to easily compensate for the injectors.
 
I would go with 550's. T28 isn't that big of a turbo and 550's will be enough for it to run 20psi. Stick with the 190lph pump though so you don't overrun your stock FPR. Get an SAFC or SAFCII to tune it with. Contrary to popular belief Gm Maf setup's on 2g's can be a waste of money. If you compare the volume of the 2g MAF to the 3" GM MAF, there is little difference. Great upgrade for a 1g though. I would start off with 550's, 190lph, SAFCII and run about 18psi. Make sure you have a datalogger to record knock, timing and o2 voltage to ensure your tuning it correctly.
 
95blackGsTurbo said:
I would go with 550's. T28 isn't that big of a turbo and 550's will be enough for it to run 20psi. Stick with the 190lph pump though so you don't overrun your stock FPR. Get an SAFC or SAFCII to tune it with. Contrary to popular belief Gm Maf setup's on 2g's can be a waste of money. If you compare the volume of the 2g MAF to the 3" GM MAF, there is little difference. Great upgrade for a 1g though. I would start off with 550's, 190lph, SAFCII and run about 18psi. Make sure you have a datalogger to record knock, timing and o2 voltage to ensure your tuning it correctly.
What kind of datalogger would you suggest? Im only going to run 15 psi this summer just to be safe, as I probably won't have enough $$ for an SAFC or SAFCII.
 
Most any Palm will work. I would suggest looking through the classifieds to find one with the cable's and software already installed.
 
95blackGsTurbo said:
I would go with 550's. T28 isn't that big of a turbo and 550's will be enough for it to run 20psi. Stick with the 190lph pump though so you don't overrun your stock FPR. Get an SAFC or SAFCII to tune it with. Contrary to popular belief Gm Maf setup's on 2g's can be a waste of money. If you compare the volume of the 2g MAF to the 3" GM MAF, there is little difference. Great upgrade for a 1g though. I would start off with 550's, 190lph, SAFCII and run about 18psi. Make sure you have a datalogger to record knock, timing and o2 voltage to ensure your tuning it correctly.
What kind of datalogger would you suggest? Im only going to run 15 psi this summer just to be safe, as I probably won't have enough $$ for an SAFC or SAFCII. If I keep the boost at 15, will I need an upgraded fuel pump and injectors right off the bat? Or will I be safe for a while?
as for the fmic thats in the mail, this is the one I am getting.

Thanks a lot guys!
 
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