Can't Find 22.5# Injectors
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 44
Likes: 0
From: Bay Area CA
Can't Find 22.5# Injectors
After searching through the numerous injector threads, I'm leaning toward the Ford injectors. However, I can't find a 22.5# injector offering. Should I round up to 23# (FMS-M-9593-M23)? If so, Is it worth the extra ~$75 for a "balanced" set (all 8 to within 1% vs the std. 7%)? Will running the 23# require modifications? I have a rich AFR issue (already had to replace all the cats) and found 5 of 8 injectors to fail the ohm test. Also, do the Ford injectors tick louder as a rule?
Drifting
Joined: Oct 2006
Posts: 1,934
Likes: 3
From: Citrus Heights California
I changed my 22.5 injectors and replaced them with 24 lb Accel. I can't recommend the Accels. I suggest the 24lb. Ford and pay the extra $75.00 for the exact flow injectors. I have not heard any complaints about them being loud or ticking. I would install an Adjustable fuel pressure regulator at the same time. You may need to reprogram your chip also.
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
You can go with the 24lb & flow matched, get AFR to ensure correct fuel pressure, my fords seem louder (tick), but with the hood down you really can't tell. There is no need to have a custom chip done until you have mods done.
Team Owner
Joined: Dec 2000
Posts: 21,094
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From: Phila., PA burbs
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 44
Likes: 0
From: Bay Area CA
Nuts! I'm trying to hold back on mods until I fix my over heating cat issue. Are the 23# injectors within the range that my car can compensate for?
Racer
Joined: Jan 2001
Posts: 386
Likes: 0
From: Ludlow Ma
Check out the latest technology in fuel injectors for your L98 Corvette.
Click this link to read about the new
Bosch XF2E-22.5
injector set.
Bosch HIGH PERFORMANCE: CORVETTE 1985-91 Bosch XF2E-22.5
http://www.fiveomotorsport.com/
Click this link to read about the new
Bosch XF2E-22.5
injector set.
Bosch HIGH PERFORMANCE: CORVETTE 1985-91 Bosch XF2E-22.5
http://www.fiveomotorsport.com/
Last edited by JIMBO7; Apr 10, 2007 at 10:40 AM.
Racer
Joined: Dec 2004
Posts: 306
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could he not use the #24 with a afpr and lower the pressure down to where they would flow 22lbs/hr ?
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
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Thread Starter
Intermediate
Joined: Dec 2006
Posts: 44
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From: Bay Area CA
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 44
Likes: 0
From: Bay Area CA
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
After searching through the numerous injector threads, I'm leaning toward the Ford injectors. However, I can't find a 22.5# injector offering. Should I round up to 23# (FMS-M-9593-M23)? If so, Is it worth the extra ~$75 for a "balanced" set (all 8 to within 1% vs the std. 7%)? Will running the 23# require modifications? I have a rich AFR issue (already had to replace all the cats) and found 5 of 8 injectors to fail the ohm test. Also, do the Ford injectors tick louder as a rule?
22# or 23# would cause your BLMS to raise or drop by 2%. This is well within the range of the computer's ability to adapt.
SD or MAF works exactly the same - the MAP and MAF sensors have zero to do with adapting fuel injector size.
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
a 24# GM injector is not the same as a 24# Ford injector. Fords are rated at 36.5psi and GM is rated at 41psi. So, a 24# Ford injector at 41psi is more like a 26.95# injector.
I can only speak of experience with my car. When I added the Ford 24 lb injectors and an AFPR, no amount of playing with the FP would keep the car from running rich.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
With my MAP, sd car, when first tuning and if pig rich no adjust in psi will comp. it enough. To a degree, I could comp. it w/pressure adjust (with tune close and within a couple blm, fine tune). Something else I found was the time it takes the ecm "trying" to comp. it to 128, if the tune is not close to begin with you may be waiting.
However, dropping the pressure can possibly effect it globally and adjusting the psi. too low (for compensating being that much richer) can also change the spray pattern/atomization, this is why I'm not a fan of this method. I would want to know where the starting place is regarding the tune/BLM , and if going with a 24# I would rather re-work the tune, or in this case just start with a 22# injector.
mo
How about the FMS "pink tops"
Last edited by mseven; Apr 10, 2007 at 09:28 AM.
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
Go to Five O's website. They list a Ford /Bosch injector set that is a direct replacement for the 85-91 Corvette tpi injectors. Here's a copy of the description:
Bosch/Ford
1985-91 Corvette
1985-92 Camaro 350
New - Flow Matched Set
$308.50/8 Set
SPECIAL NOTE: These Bosch/Ford injector sets are spec-stock for the 1996-02 Mustang 4.6 2-valve modular engine.
They have been carefully cross-referenced to match your orignial injector specs for flow and electrical resistance.
Sold with our best
3-Year/unlimited miles warranty.
Bosch/Ford
1985-91 Corvette
1985-92 Camaro 350
New - Flow Matched Set
$308.50/8 Set
SPECIAL NOTE: These Bosch/Ford injector sets are spec-stock for the 1996-02 Mustang 4.6 2-valve modular engine.
They have been carefully cross-referenced to match your orignial injector specs for flow and electrical resistance.
Sold with our best
3-Year/unlimited miles warranty.
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 765
Drifting
Joined: Oct 2006
Posts: 1,934
Likes: 3
From: Citrus Heights California
Go to Five O's website. They list a Ford /Bosch injector set that is a direct replacement for the 85-91 Corvette tpi injectors. Here's a copy of the description:
Bosch/Ford
1985-91 Corvette
1985-92 Camaro 350
New - Flow Matched Set
$308.50/8 Set
SPECIAL NOTE: These Bosch/Ford injector sets are spec-stock for the 1996-02 Mustang 4.6 2-valve modular engine.
They have been carefully cross-referenced to match your orignial injector specs for flow and electrical resistance.
Sold with our best
3-Year/unlimited miles warranty.
Bosch/Ford
1985-91 Corvette
1985-92 Camaro 350
New - Flow Matched Set
$308.50/8 Set
SPECIAL NOTE: These Bosch/Ford injector sets are spec-stock for the 1996-02 Mustang 4.6 2-valve modular engine.
They have been carefully cross-referenced to match your orignial injector specs for flow and electrical resistance.
Sold with our best
3-Year/unlimited miles warranty.
Last edited by Kool88vette; Apr 10, 2007 at 10:53 PM.
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
Kool: Got mine from 5-O and they were new and i had no problems, and excellent customer service during the install (mainly about the rail clips - which are NOT installed, but no problems... so dont know about after that, if its true thats too bad to hear.