Adjustable FPR?
 

Hey guys, here again with a question. I was changing out my injectors, because one of them was stuck open or something. While doing this, the plastic cap off of the FPR fell off and I saw a screw on top. Is the stock FPR adjustable or is it possible this is an aftermarket that looks like a direct replacement? All it says on it is "DENSO", which I know could be a stock component for Toyotas. Also, does anyone know what the stock computer's max is on injector duty cycle?

Thats not your fuel pressure regulator thats your Fuel pulsation dampner.

Read Link:

http://www.supracentral.com/index.ph...d=51&Itemid=61

Another tip: DO NOT attempt to adjust that screw! Unless you've got some VERY specialized equipment, you'll never get it back where it needs to be.

It's a good thing you said that, I was just about to play with it tomorrow.

Heh, yeah, I figured I ought to mention that. Mine was already out and I couldn't get it do help anything. So, I did some searching online and found a large PDF from some trade mag on that little bugger. They also said (to their subscribed mechanics) to not even bother touching it.