Injector Questions, horsepower and flow rates
I'm looking at injectors and I am finding some information that is boggling my mind.
Here is the vehicle:
2001 itr
TODA B and misc accessories
HyTech header(not yet installed)
A'PEXi PowerFC
No FPR
Here is what I am looking at:
210 WHP(you never know, setting my sights high)
210 WHP with a 12% loss through drivetrain translates to 239 BHP
Injector formula:
(BHP X Brake Specific Fuel Consumption)/(injectors X maximum duty cycle)=lbs./hr per injector --> to get cc per minute you multiply it by 10.50
Brake Specific Fuel Consumtion: .50lbs. of fuel per hour for each horsepower
Maximum duty cycle=80% is an approximate industry standard
This translates to:
(239 X .5)/(4 X .8)=37.34 lbs/hr
Converts to cc/min=37.34 X 10.50=392 cc/min
392 cc/min
Did I do something wrong
? Do I really need something this large? Any ideas?
With the PowerFC slightly tuned to run a rich mixture at 6600 rpm I have a 66% duty cycle(as reported by the PowerFC), but at around 8800 I am hitting 100%(as reported by the PowerFC).
Thank you,
Austin
[Modified by 00itr0757, 2:55 PM 7/6/2001]
Here is the vehicle:
2001 itr
TODA B and misc accessories
HyTech header(not yet installed)
A'PEXi PowerFC
No FPR
Here is what I am looking at:
210 WHP(you never know, setting my sights high)
210 WHP with a 12% loss through drivetrain translates to 239 BHP
Injector formula:
(BHP X Brake Specific Fuel Consumption)/(injectors X maximum duty cycle)=lbs./hr per injector --> to get cc per minute you multiply it by 10.50
Brake Specific Fuel Consumtion: .50lbs. of fuel per hour for each horsepower
Maximum duty cycle=80% is an approximate industry standard
This translates to:
(239 X .5)/(4 X .8)=37.34 lbs/hr
Converts to cc/min=37.34 X 10.50=392 cc/min
392 cc/minDid I do something wrong
? Do I really need something this large? Any ideas?With the PowerFC slightly tuned to run a rich mixture at 6600 rpm I have a 66% duty cycle(as reported by the PowerFC), but at around 8800 I am hitting 100%(as reported by the PowerFC).
Thank you,
Austin
[Modified by 00itr0757, 2:55 PM 7/6/2001]
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