2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Can I use the Stock Ecu With 720's(start up)

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Old Jun 13, 2009 | 09:06 PM
  #1  
misterstyx69's Avatar
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Can I use the Stock Ecu With 720's(start up)

I just want to See if the Engine will Start up.I would like to use the Stock ECU to do this(with 720's X 4),as I haven't Gotten to reading up on the RTEK I have.Thanks Guys.
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Old Jun 13, 2009 | 09:31 PM
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katkaroto's Avatar
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yes, i forgot what i read but yes. i think you might just be running a bit richer.
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Old Jun 13, 2009 | 10:00 PM
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...94% correct.
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Won't be running a "bit" richer...it'll be pretty stout...but it will run.
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Old Jun 13, 2009 | 10:02 PM
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Don't bother trying. You're going to have 25% more fuel throughout the entire RPM range by having 720s in there w/out adjustments. I doubt the car will even start considering it will be trying to idle in the 9-10 AFR range. Get ready for some smoke.

You got an Rtek 2.1, right? It's plug and play. Just follow the first time use instructions, and you'll be fine. You just set the injectors to 720/720 with the engine off, then start it up.
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Old Jun 13, 2009 | 11:41 PM
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iv done it, it worked fine, but i was also turbo and i dont know if u are or not. at least u know it woulnt be runnin lean lol. but like rotaryrocket88 said, if you actually have the rtek already just hook it up.
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Old Jun 14, 2009 | 10:19 AM
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If all you want to do is start the car to make sure it works, then those injectors will do the job.

But as everyone has said, it will be rich throughout the entire operating range.
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