Injector questions.
Thread Starter
|
More Turbo
Joined: Apr 2003
Posts: 729
Likes: 0
Injector questions.
Just a few curiosity questions. Do the OBS 97 trucks have split shot injectors (AB). If so, do they have a different driver module, do the 99-03's have different driver modules to run the split shots? Also, what year is the best year to look for to do the driver module mod (i forget the acronym)? I have heard the 94 and 95s are the best, but I don't know. I would like to get my hands on a spare and mod it, and then test the two and see if there is much of a difference.
Post Fiend
Joined: Mar 2007
Posts: 9,010
Likes: 5
From: Johnson City, TN.
The 1997 Cali models did have split shot injectors. All others had singles shots.
If you are talking about the IDM (injector drive module) the '94 - '97 had the same at 90 volts.
The '99 - '03 had 120 volts.
If you do the "IDM mod" then that changes it to 140 volts.
So it doesn't matter which one you choose to mod ('94 - '03) you will end up with the same result. 140 volts.
If you are talking about the IDM (injector drive module) the '94 - '97 had the same at 90 volts.
The '99 - '03 had 120 volts.
If you do the "IDM mod" then that changes it to 140 volts.
So it doesn't matter which one you choose to mod ('94 - '03) you will end up with the same result. 140 volts.
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
The 1997 Cali models did have split shot injectors. All others had singles shots.
If you are talking about the IDM (injector drive module) the '94 - '97 had the same at 90 volts.
The '99 - '03 had 120 volts.
If you do the "IDM mod" then that changes it to 140 volts.
So it doesn't matter which one you choose to mod ('94 - '03) you will end up with the same result. 140 volts.
If you are talking about the IDM (injector drive module) the '94 - '97 had the same at 90 volts.
The '99 - '03 had 120 volts.
If you do the "IDM mod" then that changes it to 140 volts.
So it doesn't matter which one you choose to mod ('94 - '03) you will end up with the same result. 140 volts.
IDM-100 uses a 75.0k Ohm (75,000 ohm) 1/2 watt 1% tolerance Metal Film resistor
IDM-110 uses a 75.0k Ohm (75,000) 1/2 watt 1% tolerance Metal Film resistor
IDM-120 uses a 73.2k Ohm (73,200) 1/2 watt 1% tolerance Metal Film resistor
so IIRC there are not IDM 90 volts.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
This is from forgotton:
IDM-100 uses a 75.0k Ohm (75,000 ohm) 1/2 watt 1% tolerance Metal Film resistor
IDM-110 uses a 75.0k Ohm (75,000) 1/2 watt 1% tolerance Metal Film resistor
IDM-120 uses a 73.2k Ohm (73,200) 1/2 watt 1% tolerance Metal Film resistor
so IIRC there are not IDM 90 volts.
IDM-100 uses a 75.0k Ohm (75,000 ohm) 1/2 watt 1% tolerance Metal Film resistor
IDM-110 uses a 75.0k Ohm (75,000) 1/2 watt 1% tolerance Metal Film resistor
IDM-120 uses a 73.2k Ohm (73,200) 1/2 watt 1% tolerance Metal Film resistor
so IIRC there are not IDM 90 volts.
PREMIUM SPONSOR
Joined: Sep 2003
Posts: 2,630
Likes: 217
From: North East Ohio
The IDM number is the volts.
The early PSD's started with 100 volt, then they went to 110 volt sometime in '95 I think.
The SD in '99 went to the 120v.
There was no 90 volt IDM.
Any IDM will run any 7.3 PSD, but the higher the voltage the better.
The early PSD's started with 100 volt, then they went to 110 volt sometime in '95 I think.
The SD in '99 went to the 120v.
There was no 90 volt IDM.
Any IDM will run any 7.3 PSD, but the higher the voltage the better.
__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
Thread Starter
|
More Turbo
Joined: Apr 2003
Posts: 729
Likes: 0
ah, shows you what I know. So a 99-03 driver will run a non split shot and a obs will run a split shot?
Trending Topics
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Sorry TRAVIS.
and blue66
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
PREMIUM SPONSOR
Joined: Sep 2003
Posts: 2,630
Likes: 217
From: North East Ohio
The electronics guys that build my flow bench controller (which uses an IDM) said they beilieve it's possible to bump to 160v (which is very easy to do) but they are not sure how long the rest of the components would last. It might be seconds, hours or thousands of hours of run time. Nobody has tried, too much $$$ to mess up. 140v is very reasonable as far as the rest of the stuff goes, but 160v is just pushing it.
Also, there comes a point when the solenoid/Poppet might just not react any quicker. 140v might be all it takes to make them as fast as they will be. Not sure...
Also, there comes a point when the solenoid/Poppet might just not react any quicker. 140v might be all it takes to make them as fast as they will be. Not sure...
__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
Posting Guru
Joined: Jan 2003
Posts: 1,412
Likes: 0
From: Munroe falls, Ohio
The IDM has nothing to do with being split shot or not. Its the injector itself that determines split shot or single shot.
Thread Starter
|
More Turbo
Joined: Apr 2003
Posts: 729
Likes: 0
Ah, ok, I thought maybe the IDM was actually telling the split shot injectors when to fire the two different times.