Pw

1500chevy5.7l · 07-06-2008, 07:10 PM

ok so on my set-up i run 80# injectors at 24psi.....and i ams till close on pw..... but i am not sure i have it right..ok at wot 12.4afr pw jump high at low rpm like at 3200 its 5.2ms...then at 3600 4.9ms...4400.4.4ms...5200 4.3ms.. 5500 4.2ms am i in the clear here.....or do i need more pressure...?

1500chevy5.7l · 07-06-2008, 07:38 PM

huh.....i was always tought lower pw better at higher rpm..... but was not sure the exact number

Red94Chev · 07-07-2008, 12:29 AM

Can't really understand what you're asking. What are the O2 sensor reading in volts for your WOT run? A 4.2 msec Inj pw at 5500RPM is 77% Inj DC, so the injectors are not maxed out.

1500chevy5.7l · 07-07-2008, 09:38 AM

ah i dont use the o2 sensors anymore i am open loop with wideband a/f..... iw as jsut making sure iw as not running out of injector i was not sure if 4.5 was max.....or 5.5 was max....

Tbi-MAX · 07-07-2008, 06:53 PM

good question, cause i think my prob is like yours... but i notice when say map cells are the same per map PW is the same.. but somehow i think im runing out of PW, for WOT.

07-06-2008, 07:10 PM	#1
1500chevy5.7l Curt 1992 chevy 5.7l Status: Offline Join Date: Aug 2006 Member ID: 53310 Pics: My Gallery Location: tennessee Age: 23 Posts: 847	Pw ok so on my set-up i run 80# injectors at 24psi.....and i ams till close on pw..... but i am not sure i have it right..ok at wot 12.4afr pw jump high at low rpm like at 3200 its 5.2ms...then at 3600 4.9ms...4400.4.4ms...5200 4.3ms.. 5500 4.2ms am i in the clear here.....or do i need more pressure...? 92 5.9l full roller,fully forged,scatt crank.AFR 180cc heads,Crane 2032cam,700R4 raptor trans,yank3200,14-bolt,auburn 4.11.still TBI

07-06-2008, 07:38 PM	#2
1500chevy5.7l Curt 1992 chevy 5.7l Status: Offline Join Date: Aug 2006 Member ID: 53310 Pics: My Gallery Location: tennessee Age: 23 Posts: 847	Re: Pw huh.....i was always tought lower pw better at higher rpm..... but was not sure the exact number 92 5.9l full roller,fully forged,scatt crank.AFR 180cc heads,Crane 2032cam,700R4 raptor trans,yank3200,14-bolt,auburn 4.11.still TBI

07-07-2008, 12:29 AM	#3
Red94Chev Kick Ass!! Status: Offline Join Date: Sep 2005 Member ID: 33983 Pics: My Gallery Location: Edmonton, AB Age: 33 Posts: 929	Re: Pw Can't really understand what you're asking. What are the O2 sensor reading in volts for your WOT run? A 4.2 msec Inj pw at 5500RPM is 77% Inj DC, so the injectors are not maxed out.

07-07-2008, 09:38 AM	#4
1500chevy5.7l Curt 1992 chevy 5.7l Status: Offline Join Date: Aug 2006 Member ID: 53310 Pics: My Gallery Location: tennessee Age: 23 Posts: 847	Re: Pw ah i dont use the o2 sensors anymore i am open loop with wideband a/f..... iw as jsut making sure iw as not running out of injector i was not sure if 4.5 was max.....or 5.5 was max.... 92 5.9l full roller,fully forged,scatt crank.AFR 180cc heads,Crane 2032cam,700R4 raptor trans,yank3200,14-bolt,auburn 4.11.still TBI

07-07-2008, 06:53 PM	#5
Tbi-MAX You are a ** looser Status: Offline** Join Date: Feb 2007 Member ID: 62802 Pics: My Gallery Location: Desert Age: 26 Posts: 2,806	Re: Pw good question, cause i think my prob is like yours... but i notice when say map cells are the same per map PW is the same.. but somehow i think im runing out of PW, for WOT. FSC admin sucks balls, he has to much free time.


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