Thanks komiko, maybe Phil can chime in?When I was getting my REV400 installed at BOE, I was told that the stock pump is retained (not removed) but effectively set to 0 pressure - as a pass thru- that feeds my surge tank. So I don't think you need to remove it - just turn down the out put pressure some how? And leave it in the circuit?
(Editorial note: I do not know for sure, I only know my recollection)
Same here and install was a breeze with the rear clam already off.I just installed boe surge tank and was done. Kills two birds with one stone. Fixes fuel starvation and fuel needs for more hp