I don't know - I guess I have to chime in differently. First I'd like to know for sure the hot pipe is due to injectors.
Secondly, I think you could benefit from 24s. You've got the heads, cam and intake upgraded. Add an adjustable fuel pressure regulator, set it at about 42 psi at WOT and you should be cookin' with gas. Yes you'd have to get that MAF meter recalibrated or upgraded too.
Just my 2 pennies.
