550cc injector with stock fuel pressure regulator and MAF???

El Supracabras · 05-13-2011, 05:10 PM

I'm no expert but I would not do it. It would cost less than the price of one RC 550 injector to send all six of your injectors to a specialist for a proper cleaning and flow/volume performance check. If one injector is dirty to the point of leaking, the rest of the injectors are likely to be dirty as well.
The 550cc injectors and adjustable regulator (and fuel pump!) are suplemental upgrades for the 4.0L Lexus afm upgrade. Read the Reg Reimer write up on it before attempting it (if you havn't). It explains in detail the point and effects of these upgrades.
Skipping steps (especially when upgrading) almost always yields less than desirable results. I would keep it stock until you are ready to do this upgrade completely.

05-13-2011, 05:10 PM	#2
El Supracabras 3" Exhaust Join Date: Feb 2010 Location: Chicago Posts: 240	I'm no expert but I would not do it. It would cost less than the price of one RC 550 injector to send all six of your injectors to a specialist for a proper cleaning and flow/volume performance check. If one injector is dirty to the point of leaking, the rest of the injectors are likely to be dirty as well. The 550cc injectors and adjustable regulator (and fuel pump!) are suplemental upgrades for the 4.0L Lexus afm upgrade. Read the Reg Reimer write up on it before attempting it (if you havn't). It explains in detail the point and effects of these upgrades. Skipping steps (especially when upgrading) almost always yields less than desirable results. I would keep it stock until you are ready to do this upgrade completely.