Does this injector flow sound right?
Does this injector flow sound right? I'm going to put some FAST 36lb hr injectors in, the website says they are rated at 45psi and I understand the LS1 injectors flow at 58psi.
5.149686
5.181781
5.213678
5.245381
5.276893
5.308218
5.339360
5.370321
5.401104
5.431713
5.462151
5.492420
5.522523
5.552463
5.582242
5.611863
5.641329
The reason I ask is because the stock values are all different numbers and these ones are constantly at 5. I used the stickied injector calculator
5.149686
5.181781
5.213678
5.245381
5.276893
5.308218
5.339360
5.370321
5.401104
5.431713
5.462151
5.492420
5.522523
5.552463
5.582242
5.611863
5.641329
The reason I ask is because the stock values are all different numbers and these ones are constantly at 5. I used the stickied injector calculator
According to Bosch, these injectors flow 35.746 lb/hr @ 3 Bar.
Bosch Flow Data:
Here's the calculation:
Flow rate with Hepatane: 261.1 g/m
Conversion from Hepatane to petrol: 3.5%
Flow rate with petrol (g/m x 1.035): 261.1 x 1.035 = 270.238500 g/m
Convert to g/s (g/m / 60): 270.238500 / 60 = 4.503975 g/s
Convert g/s to lb/hr (g/s * 7.9366479): 4.503975 * 7.9366479 = 35.746463 lb/hr @ 3 Bar
Are you using a referenced or unreferenced fuel pressure regulator? Which tuning software are you using?
Here is the IFR table for EFILive with an unreferenced fuel system:
Assumption: 58 psi (4 Bar) pressure at the fuel rail
Bosch Flow Data:
Here's the calculation:
Flow rate with Hepatane: 261.1 g/m
Conversion from Hepatane to petrol: 3.5%
Flow rate with petrol (g/m x 1.035): 261.1 x 1.035 = 270.238500 g/m
Convert to g/s (g/m / 60): 270.238500 / 60 = 4.503975 g/s
Convert g/s to lb/hr (g/s * 7.9366479): 4.503975 * 7.9366479 = 35.746463 lb/hr @ 3 Bar
Are you using a referenced or unreferenced fuel pressure regulator? Which tuning software are you using?
Here is the IFR table for EFILive with an unreferenced fuel system:
Assumption: 58 psi (4 Bar) pressure at the fuel rail
Last edited by 405HP_Z06; May 31, 2008 at 02:18 PM. Reason: Added information
Staging Lane
Joined: Apr 2008
Posts: 55
Likes: 0
Use this to calculate your IFR table on a perfectly tuned engine, swap injectors, log, and then come back and tell me this is correct.
More information concerning the pressure rating for FAST injectors:
Last edited by 405HP_Z06; Jun 1, 2008 at 02:37 PM.
