Fuel Injectors / Rail
Re: Fuel Injectors / Rail
These are the same ones I used. 8 for 108 bucks with shipping.
* Fuel Injectors 19lb Design III 3 Ford Mustang TPI BMW:eBay Motors (item 280366523544 end time Jul-12-09 17:52:45 PDT)
* Fuel Injectors 19lb Design III 3 Ford Mustang TPI BMW:eBay Motors (item 280366523544 end time Jul-12-09 17:52:45 PDT)
Join Date: Jan 2008
Location: Long Island, NY
Age: 37
Posts: 2,009
Likes: 0
Received 2 Likes
on
2 Posts
Re: Fuel Injectors / Rail
Originally Posted by ChuckNorris
These are the same ones I used. 8 for 108 bucks with shipping.
* Fuel Injectors 19lb Design III 3 Ford Mustang TPI BMW:eBay Motors (item 280366523544 end time Jul-12-09 17:52:45 PDT)
* Fuel Injectors 19lb Design III 3 Ford Mustang TPI BMW:eBay Motors (item 280366523544 end time Jul-12-09 17:52:45 PDT)
(Part number)................................... Ohm's.....cc rate....... lb rate
0280 155 700..........................................14.2....... 204...............19
Last edited by downwardspiral; 07-12-2009 at 04:55 PM.
Re: Fuel Injectors / Rail
Originally Posted by ChuckNorris
These are the same ones I used. 8 for 108 bucks with shipping.
* Fuel Injectors 19lb Design III 3 Ford Mustang TPI BMW:eBay Motors (item 280366523544 end time Jul-12-09 17:52:45 PDT)
* Fuel Injectors 19lb Design III 3 Ford Mustang TPI BMW:eBay Motors (item 280366523544 end time Jul-12-09 17:52:45 PDT)
think these injectors, C.A.I. and 74mm throttle body would be a decent set up?
Join Date: Jan 2008
Location: Long Island, NY
Age: 37
Posts: 2,009
Likes: 0
Received 2 Likes
on
2 Posts
Re: Fuel Injectors / Rail
Originally Posted by JimmySkullz
Do you need a tune with those, or is it a set up the computer could adjust to?
think these injectors, C.A.I. and 74mm throttle body would be a decent set up?
think these injectors, C.A.I. and 74mm throttle body would be a decent set up?
Re: Fuel Injectors / Rail
BIGGER INJECTORS ARE NOT NEEDED.
I went from 17 to 1 f/a ratio to 9 to 1 just be changing the rail pressure.
I did a big writeup showing the results and method to increase the pressure. THe stock regulator has a port that will accept a pressure signal and increase the rail pressure.
I went to 80 psig rail on 20+ psi boost, way too much.
Fuel falls off with higher boost due to the INCREASED boost PUSHING against the injector DECREASING the pressure differential. At idle the 58psig fuel rail is aided by the -10 psig of the intake manifold to give an effective 68 psig differential.
By adjusting the rail pressure I have been producing f/a ratios of about 12.7. I control that DYNAMICALLY by monitoring the f/a ratio WHILE DRIVING with a add on computer. See my signature for coming events............
YOu dont need bigger injectors and I have been to 25 psi boost ratings before I ditched the code three / 178 and went to a STANDARD 185 eurocharged pulley.
WOODY
I went from 17 to 1 f/a ratio to 9 to 1 just be changing the rail pressure.
I did a big writeup showing the results and method to increase the pressure. THe stock regulator has a port that will accept a pressure signal and increase the rail pressure.
I went to 80 psig rail on 20+ psi boost, way too much.
Fuel falls off with higher boost due to the INCREASED boost PUSHING against the injector DECREASING the pressure differential. At idle the 58psig fuel rail is aided by the -10 psig of the intake manifold to give an effective 68 psig differential.
By adjusting the rail pressure I have been producing f/a ratios of about 12.7. I control that DYNAMICALLY by monitoring the f/a ratio WHILE DRIVING with a add on computer. See my signature for coming events............
YOu dont need bigger injectors and I have been to 25 psi boost ratings before I ditched the code three / 178 and went to a STANDARD 185 eurocharged pulley.
WOODY
Re: Fuel Injectors / Rail
The injectors are for naturally aspirated crossfires with intake mods. I calculated 19.4 #hr injectors are needed for 215hp at .80 duty cycle and .50 BSFC and 58psi fuel pressure on
http://www.rceng.com/technical.aspx
The OEM injectors are calculated to be at 100% duty cycle to produce the factory advertised 215 hp, IMO this is why the stock xfire falls flat in the upper RPMs. My car definately pulls harder from 4000-6200 rpm after switching the injectors.
The calculator may be off but I believe it to be accurate.
http://www.rceng.com/technical.aspx
The OEM injectors are calculated to be at 100% duty cycle to produce the factory advertised 215 hp, IMO this is why the stock xfire falls flat in the upper RPMs. My car definately pulls harder from 4000-6200 rpm after switching the injectors.
The calculator may be off but I believe it to be accurate.
Last edited by ChuckNorris; 08-21-2009 at 08:33 PM.
Re: Fuel Injectors / Rail
Originally Posted by ChuckNorris
The injectors are for naturally aspirated crossfires with intake mods. I calculated 19.4 #hr injectors are needed for 215hp at .80 duty cycle and .50 BSFC and 58psi fuel pressure on
RC Fuel Injection
The OEM injectors are calculated to be at 100% duty cycle to produce the factory advertised 215 hp, IMO this is why the stock xfire falls flat in the upper RPMs. My car definately pulls harder from 4000-6200 rpm after switching the injectors.
The calculator may be off but I believe it to be accurate.
RC Fuel Injection
The OEM injectors are calculated to be at 100% duty cycle to produce the factory advertised 215 hp, IMO this is why the stock xfire falls flat in the upper RPMs. My car definately pulls harder from 4000-6200 rpm after switching the injectors.
The calculator may be off but I believe it to be accurate.
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)