Injector Flow Rate vs KPA...

Reply Subscribe

Thread Tools

Search this Thread

Dec 9, 2009 | 12:29 PM

chevynation

Thread Starter

On The Tree

iTrader: (8)

Joined: Jan 2006

Posts: 143

Likes: 0

From: AZ

Injector Flow Rate vs KPA...

Hey guys, I'm doing my first tune ever and I hit my first roadblock (already, lol).

My injectors flowed 40.17 lbs @ 3bar, 80% duty cycle, so doing the math, I get an adjusted flow rate of 45.58 lbs @ my 56psi. My question is, for what value on the IFR vs KPA table should I input the 45.58lbs and should I scale up or down from there?

Thanks

Dec 9, 2009 | 02:15 PM

shoemike

TECH Fanatic

iTrader: (25)

Joined: Dec 2005

Posts: 1,283

Likes: 2

From: Prescott, AZ

Injector setup(IFR)

Dec 9, 2009 | 10:14 PM

chevynation

Thread Starter

On The Tree

iTrader: (8)

Joined: Jan 2006

Posts: 143

Likes: 0

From: AZ

^^ Thank you, good sir.

Dec 10, 2009 | 11:41 AM

Doc99SS

TECH Regular

iTrader: (2)

Joined: Nov 2001

Posts: 456

Likes: 0

From: Mims, Florida

When adjusting the injector flow table, you do not take into account the duty cycle.
If the injectors flow 40.17 #/hr at 43.5psi, then they will flow 45.58 #/hr at 56psi.
If the injector flow table is for a 28.6 #/hr injector (@56psi) to begin with, then simply multiply every entry in the table by 1.594, which is 45.58/28.6....