I have the redtop SR20DET swap and am looking to upgrade my fuel system. one big thing that ive heard is getting the larger injectors. what is the common size or sizes that are best to use? also, im assuming that it would be wise to install and regualtor and possibly a new pump as well? thanks

 

Yes you should install a new pump, espicially if your looking at upping your power, and upgrading your turbo.

Common sizes are 550cc, 700cc, 740cc and 850cc.

The power figure you're after will determine what size you need.

I recommend some 550cc as they will support about 270kW @ rear wheels, which should be more then enough.

I Installed a fuel reg just so I could get the exact pressure I wanted for when I tuned my aftermarket computer. Whether or not you should install one is entirely up to you.

Of course with SR20DET fuel system you will need to look for SIDE-FEED injectors to suit your standard rail.

 

dusky sumed it up basically, it just depends on your cars power output.