IDM 140 volt mod questions
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
IDM 140 volt mod questions
Right now at 180 degree oil temp at idle I am seeing 1.250 ms injector pulse width.
Injector control pressure is 500 PSI.
And each injector is injecting 8 cc's of fuel.
Stock 97 engine with a 120 volt IDM.
If I do the 140 volt mod, does the injector pulse width get shorter?
Injector control pressure is 500 PSI.
And each injector is injecting 8 cc's of fuel.
Stock 97 engine with a 120 volt IDM.
If I do the 140 volt mod, does the injector pulse width get shorter?
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
I believe from a computer standpoint (PCM) the pw is the same.
From a mechanical standpoint the injectors fir a bit quicker.
Here is some reading on it ... 7.3 Power Stroke IDM
From a mechanical standpoint the injectors fir a bit quicker.
Here is some reading on it ... 7.3 Power Stroke IDM
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Here is another links that maybe helps you:
http://www.shol.com/shadow_tech/idmmod/
Powerstroke Diesel IDM mod
http://www.shol.com/shadow_tech/idmmod/
Powerstroke Diesel IDM mod
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
I have been reading everything I can find, just wondering what differences I am going to be seeing.
I plan on theis mod shortly, so I guess I will do a couple wide open test runs with the data logger both before and after the mod to see what shows up.
I plan on theis mod shortly, so I guess I will do a couple wide open test runs with the data logger both before and after the mod to see what shows up.
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Good idea and post the results.
Senior User
Joined: Apr 2010
Posts: 262
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hey guys, I posted a question on socaps.com about this and never got an answer. Anybody who has done the IDM 140 mod on an OBS(IDM 100 or 110), what were the changes to fuel economy? Currently I am getting 16-18city and 19-21 hwy. I don't want to sacrifice fuel economy if at all possible, which is why I don't want to do injectors. Future mods include intake, 4" exhaust (I already have a 3"dp), and a switchable chip(I have a dyno sources inc. single stage now). With the economy mode on my future chip, and the intake, and exhaust upgrades, I want to see up in the 20's for fuel economy... So yeah, if anyone has done it and seen a drop or gain in fuel economy, I would appreciate the info. TIA guys!
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