I got the pump in without modifying the hanger and the wiring harness I got with the pump was plug and play. What I was referring to was the actual install itself. I had a ton of trouble getting the fuel lines off, ended up having to use a pair of pliers.

I'll post pics and some details when I get a chance. With the stock regulator and lines my base fuel pressure went up to 55psi vs the stock 44psi with the Walbro 255.

 

How much would it go up using just a 340 pump? Thats a good increase in pressure with the stock FPR. When I'm home I'll have to find it, but I read on either a sellers website or another forum that this pump was overkill for pump gas. But people use dual 255 and 340's on pump so I don't see that being true.

 

Total overkill for pump piss. But needed for e85 or race gas in the 600 plus range.

 

About the fuel pressure with a 340...I observed a base fuel pressure of 58psi with the stock FPR. THis was with the pump hardwired and using an AEM pressure sensor.

 

Here is an updated thread for future reference https://www.s2ki.com/s2000/topic/999...-pump-install/