A friend of mine had a '92 Si with a B18C1 swap and it refused to pull once he reached VTEC. We couldn't figure out what the hell was wrong with it until we hooked up a fuel pressure gauge to the filter and it read around 70 lbs of pressure at idle. They took the hose off and did something, I'm assuming opened that hole up a bit, and it ran fine after that. I would agree though, get the GS-R line. Seeya.