how to on a cheap fuel upgrade alternative.
the reson i did this is because:
A) According to my sources, evo8 f.p.r.'s do not have issues with f.p. creep.
B) The evo 8 fpr is rated at 43ish p.s.i.
C) Mitsubishi puts out good o.e.m. parts
D) The O.E. injectors are engineered for the O.E. regulator.
(not including tools, this cost me around $120).
fine tooth hacksaw
tap (for re-threading)
1. remove and disassemble fuel rail completely
2. clean and install the evo 560's in reverse to the dsm's (direct bolt on)*
3. cut the return line nipple flush on the evo8 fpr.-(as it is bent the wrong way, also trying to bend it the proper way will kink the tube, trust me just cut it off)
4. drill and tap the return using EXTREME CAUTION NOT GO GO TO DEEP. i used a caliper and measured the depth then measured the drill bit and marked with tape.
5. the flange is a little narrower, so cut "open" the bolt flange's.
6. clean everything very thoroughly and blow it out good.
7. buff it!, or paint it, or?? just make it look nice (don't do it half-assed)
8. install in-reverse to uninstalling using washers to overlap the flange.
9. tune ecu.
p.s. I would,(as i did) replace the fuel rail bolts with studs. I don't know about you, but I strip out those threads way to easily.
HOW TO BUILD MAX PERFORMANCE MITSUBISHI 4G63T ENGINES
Robert Bowen, Robert Garcia. Road/Race engineering.