the only downside is harder startup in some cases, depending on the regulator some have to prime the lines by turning the key on and off a couple times..Also the fuel runs hotter.
I'm betting your issue is directly related to your boiling hot fuel since you are not deadhead.this is the issue Im having - I am NOT dead headed at the moment and I get bad fuel vapor smell after a while when the fuel gets hot (PTFE lines). I need to make sure something in the evap didn't get disconnected I guess. Im also looking at a controller to run 1 pump until the other is needed
Yep thats where i am now with the pprv deleted a bit hard to start at times when warm. Wonder why only when warm as opposed to cold. But doesnt bother me too much.I wouldn't call hard startup a downside compared to a returnless system because both can have this issue. On a returnless system if you have a PPRV delete you have the same symptom.
My guess is the fuel is vaporizing in the rails when it sits hot and takes a few cranks to bleed that out.Yep thats where i am now with the pprv deleted a bit hard to start at times when warm. Wonder why only when warm as opposed to cold. But doesnt bother me too much.
Your tune needs to be adjusted. Something in the start tables. I had the same issue with my 01 when I ran 80lb injectors. Granted I was returnless. But cold start was fine and hot start would act up at times. Once I made the changes in the tune it started up like stock every time.Yep thats where i am now with the pprv deleted a bit hard to start at times when warm. Wonder why only when warm as opposed to cold. But doesnt bother me too much.
I'm betting your issue is directly related to your boiling hot fuel since you are not deadhead.
Running staged pumps won't solve your fuel heating issue.