I'm swapping a JDM B18C1 into my '98 GS-R. Right now I'm running an AEM pems and a turbocharger. The engine going in is going to be N/A and it is a serious, serious pain in the ass to get the computer remapped, where I live. I'd have to tow to car 300 miles to Houston, drop it off during the weekend, then drive up there to pick it back up, and the shop there wants $500 "to start off" plus any extra time it'll take if anything's bad.
What I'd like to do is use my USDM ecu with the stock injectors, and bump up the fuel pressure to around 55-65psi to make up for the increase in compression with the JDM engine (10.6:1 vs. 10.1:1). This won't be a permanent thing, because I'm moving to california (and driving the car there, hopefully) in a month, and there's plenty of shops in close proximity to my house that can reprogram the AEM computer then. Will this work, and is there any advice on what a specific fuel pressure I should look at would be?

 

Thats quite a pressure increase for not a lot of compression...you're gonna be dumping gobs of fuel in. You should be fine at the stock fuel pressure or maybe just a couple PSI over stock, and on the stock fuel maps, after all that's the same CR of a USDM ITR. I would just go up a few psi on the fuel, and check your plugs to see how the car is running.