IDM upgrade
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Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
I think that you are referring to the IDM mod which just adds a resistor to the IDM to increase the voltage. The higher voltage makes the injectors open a bit quicker. I personally dont think that it is necessary with a chip or tuner
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Post Fiend
Joined: Nov 2007
Posts: 9,549
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From: Payson, AZ
Custom tunes can be had that will be just as good whether you have a 110, 120 or modified voltage IDM. If you are going to get tunes don't bother with modified IDM. Or if you are not going to get tunes you can modify the IDM yourself for a couple of bucks. See this IDM Mod Pictorial by Scott (Cookie).
Post Fiend
Joined: Nov 2007
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From: Payson, AZ
The IDM mod effects the SOI (Start Of Injection) timing.
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Joined: Oct 2010
Posts: 701
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From: Western PA
Say someone dosent have tunes now, so they 140 the IDM, then down the road tunes come along. Would having a 140 be a problem, can it be changed back to stock or is it a one time deal and would prevent you from getting tunes later?
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
I would just make sure that whoever is supplying the tunes is made aware of the 140 IDM. It may make a difference in their tuning.
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