I got a walbro 255 HI PSI fuel pump, SLP 25p/h injectors, and NGK TR55 Plat. plugs. Will the plat plugs be ok to run 4.5PSI of boost without preigniting and detenating(sp), and are the injectors give me enough fuel?

 

I would stay away from platinum plugs; you risk pre-detonation.

 

If I were you, I would bag the platinums for sure, get a set of 30lb SVO injectors, consider running the 6psi set up instead of the 4, and get a tune for what you have so far, like maybe from pcmforless. And tune for that MAF also, although I would consider going back to the factory MAF.

Ken R.