Superrmario
Member
- Joined
- Nov 6, 2013
Hi folks.
Just replaced fuel pump with a newer Walbro unit from Full Throttle Speed.
http://www.fullthrottlespeed.com/customkititems.asp kc 834GMHP eq 834GMHP-1
Have had lean run issues since I had the motor done so I am at the same place I was before I replaced the pump. One would assume that my old pump was good LOL.
I have 20% fuel added to the base. 10% in my Translator and 10% in my 5.7 25lb boost Alky Chip. (I am spraying straight VP meth.) This was all done prior to the pump change. Is 20% of fuel addition a normal thing at 20-21lbs of boost?
When you see the logs I am still running low 02's on the upper portion my test hit. There was a brief hit of KR when I laid into the pedal on the first log. I think that was false as it jumped right up or due to the fact I forgot to prime. Either way, that's really not my concern right now.
I cant get my 02's into the 800's. Meth injection is set to 6 and I have the PAC turning on at 11-12lbs of boost.
Before I took these runs, I checked my fuel pressure at the rail and I am at 39psi uncapped, 44-45 capped at idle. After, take a look at my logs right after these passes, and then for shits and giggles my FP gauge. I find that my fuel pressure is sitting at 30psi capped 40psi uncapped. I have seen this before with the old pump and in turn though it was the pump getting too hot, lowering pressure.
Any thoughts?
Attached are the logs.
Thanks Guys / Gals!!
Just replaced fuel pump with a newer Walbro unit from Full Throttle Speed.
http://www.fullthrottlespeed.com/customkititems.asp kc 834GMHP eq 834GMHP-1
Have had lean run issues since I had the motor done so I am at the same place I was before I replaced the pump. One would assume that my old pump was good LOL.
I have 20% fuel added to the base. 10% in my Translator and 10% in my 5.7 25lb boost Alky Chip. (I am spraying straight VP meth.) This was all done prior to the pump change. Is 20% of fuel addition a normal thing at 20-21lbs of boost?
When you see the logs I am still running low 02's on the upper portion my test hit. There was a brief hit of KR when I laid into the pedal on the first log. I think that was false as it jumped right up or due to the fact I forgot to prime. Either way, that's really not my concern right now.
I cant get my 02's into the 800's. Meth injection is set to 6 and I have the PAC turning on at 11-12lbs of boost.
Before I took these runs, I checked my fuel pressure at the rail and I am at 39psi uncapped, 44-45 capped at idle. After, take a look at my logs right after these passes, and then for shits and giggles my FP gauge. I find that my fuel pressure is sitting at 30psi capped 40psi uncapped. I have seen this before with the old pump and in turn though it was the pump getting too hot, lowering pressure.
Any thoughts?
Attached are the logs.
Thanks Guys / Gals!!