when I pulled out this morning I looked up at my post filter pressure guage it said 0 psi, I backed off switched to pre filter and it said I had 6psi at idle. I've done alot to the engine, and replaced both lift and injection pump 3 years ago. should I R&R the stock lift pump or is their a hi- performance aftermarket system. that I should install, I live where it gets very cold in the winter months, and I think something like the FASS system might gel up when it gets real cold. Any ideas?.