Forced Induction Custom FI Setup Questions

Problems starting with DSM 450s

Old 08-09-2010, 07:18 PM
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Arrow Problems starting with DSM 450s

Hey guys,
So I just finished putting a turbo kit into a d15b7, and I had 370 dsm injectors and the car would start and run, except one injector was bad. So I bought some 450s, and got a tune off Phearable for the 450s, but the damn thing won't start. I put in the old 370s, and the car still started and ran on 3 cylinders with the new tune. Please help I'm stumped.

Are the 370s NOT low impedance? I have a resistor box but if it was installed incorrectly then the 370s would work but the 450s wouldn't? I couldn't find anywhere that said the 370s aren't low impedance, can anyone confirm this for me?

Last edited by BlueSol; 08-09-2010 at 07:36 PM.
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Old 08-10-2010, 11:09 AM
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DSM injectors are high imp (saturated) from what i remember.
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Old 08-10-2010, 11:35 AM
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use a multimeter and ohm out the injectors. most oem vehicles use high impedence injectors. when you get above 800cc injectors thats when they usually start to go low impedence.
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Old 08-10-2010, 01:35 PM
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Well I know for a fact that the dsm 450s are low impedance peak and hold injectors, just wondering about the 370s. But I'm going to go pull out the multimeter and figure it out thanks.
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