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Reload this Page 9th Injector Delete

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Old 06-29-2006, 01:24 PM   #1
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9th Injector Delete
My old setup used the 9th injector. I've since changed to a set of ported 081 heads, intake base and runners. These came off a '90 IROC. It doesn't have the provision for the 9th injector now. I've been told this will make my motor run poorly if at all. How do I get around this?
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Old 06-29-2006, 02:20 PM   #2
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You could switch to an 89 prom. They didn't have the 9th injector. I am no sure what would be involved, but VATS might be a problem.
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Old 06-29-2006, 03:26 PM   #3
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Isn't there anything I can do with the stock ecm? Delete the injector or something? No way to bypass it?
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Old 06-29-2006, 04:05 PM   #4
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I don't know for sure. I know they changed the fuel curve in 89 to delete the 9th injector. A search might be helpful.
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Old 06-30-2006, 02:14 AM   #5
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Email or call Angel at TPI Parts(a site sponsor). He offers a reprogramming service for stock PROMs. It sounds like what you might want. Good guy, excellent personal service, easy to work with, quick turnaround.

86-89 TPI PROM Programming Service
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Old 06-30-2006, 02:49 AM   #6
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I just removed the injector and the fuel tube (and pluged the fuel rail) and thats it. Never did anything to the prom. Car still started fine for me and ran like that for years before I sold it.
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Old 06-30-2006, 05:43 AM   #7
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Really? Hmm...I'll see what happens once the motor is back together. If it starts and runs then righton, if not than I'll figure something out. Thanks.
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Old 07-01-2006, 12:35 AM   #8
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Well, one thing to remember is that i'm in Houston. And if it gets below 50F people freak and think a ice age has started. If your in the great white north your car might be a bit more touchy about loosing the cold start injector.
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Reload this Page 9th Injector Delete
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