LT4 w/ Adj. Fuel Press Reg. Functionality, Pressure, Performance
Thread Starter
Intermediate
Joined: Aug 2001
Posts: 43
Likes: 0
From: San Antonio Texas
LT4 w/ Adj. Fuel Press Reg. Functionality, Pressure, Performance
I have recently acquired a very nice billet aluminum AFPR and I have a few questions. :rolleyes:
1. How is having higher pressure on the fuel going to help? Other than possibility of better atomization. The fuel rate should stay the same which is 24 lb/hr.
2. Will setting the AFPR at say 50 psi set any codes and how are the codes set?
Right now the car is running a K&N filter, Hypertech Power Progrmmer Plus, Accel Extreme 9000 wires and Bosch +4. Everything else is bone stock.
Thanks,
:cheers: :flag
1. How is having higher pressure on the fuel going to help? Other than possibility of better atomization. The fuel rate should stay the same which is 24 lb/hr.
2. Will setting the AFPR at say 50 psi set any codes and how are the codes set?
Right now the car is running a K&N filter, Hypertech Power Progrmmer Plus, Accel Extreme 9000 wires and Bosch +4. Everything else is bone stock.
Thanks,
:cheers: :flag
Pro
Joined: Sep 1999
Posts: 548
Likes: 0
From: Alton VA
Re: LT4 w/ Adj. Fuel Press Reg. Functionality, Pressure, Performance (autoxLT4)
I checked my stock pressure and adjusted the AFPR to the same level (47psi). Took it to the Dyno to fine tune it. Went as low as 45 and as high as 54 before settling in 52psi. Noticed a small increase at high rpm's (2-3hp) and was disappointed a h*ll. A $100 for the part and another C note for an hour of dyno time for essentialy no gain. Hoping it will help when I do my heads and cam. Still runs fine and did not lower MPG at all. (maybe even a small increase) :(
Safety Car
Joined: Mar 2000
Posts: 3,620
Likes: 2
From: Hillsboro OR
Re: LT4 w/ Adj. Fuel Press Reg. Functionality, Pressure, Performance (vetsvette)
I checked my stock pressure and adjusted the AFPR to the same level (47psi). :(
