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

Resetting cpu

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Old Sep 8, 2001 | 10:55 AM
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From: NA
Resetting cpu

I was reading on some website about this mod that nobody has here in the forum, lol..I'll tell you guys about it when I'm done testing it, and it says I'm supposed to disconnect my negative battery terminal for at least 30min to reset the fuel computer or something like that. Now my ? is, do I do this while the motor is running? It also says this is a good idea if you have aftermarket intake, exhaust, new spark plugs etc...anybody heard of this? Whats the deal? Is there a special way to do it w/ the rx7s???
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Old Sep 8, 2001 | 11:25 AM
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You probably have a piece of metal that is swirl shaped. It is called an air twister or something and is supposed to increase fuel efficiency and horsepower. Am I correct? To "reset" the fuel computer, disconnect the negative battery terminal for about 30 minutes, and then reconnect it. It will drive a little funny at first, but after a couple of trips should be normal again. BTW, I don't think those things actually work if you ask me.
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Old Sep 8, 2001 | 12:34 PM
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God I hope you didn't waste your money on that thing...oh well. To completely reset everything in the car, just disconnect eh battery and step on the brake pedal to release any left over voltage in the wiring. That should do it.
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Old Sep 9, 2001 | 08:47 AM
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The way that I understand resetting your ECU is that you need to drive your car hard for 15 min and then take out your ECU FUSE for 30 secs then putting it back in and reving it to redline 3 or 4 times..
Doing this will reset your ecu so you will get better gas millage and more power..
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Old Sep 9, 2001 | 11:48 PM
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That's sounds like a pretty stange way to reset a computer... Where did you here that??
Does the RX-7 have an adaptive computer or something? Why the reset requirement?
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Old Sep 10, 2001 | 12:59 AM
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From: mountain home idaho
BamBam7

Off Subject, how easy is it to install the MSD Ignition.[COLOR=skyblue]
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Old Sep 10, 2001 | 01:33 AM
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From what I understand ignition boxes are easy to install, go to fc3s.org's site www.fc3s.org and look at the Crane HI-6 writeup.
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Old Sep 10, 2001 | 02:16 PM
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Anyone gunna figure out the resetting of the ECU thing? lol. Well if you do definitely post it, or anyone that already knows about it.


Chris
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Old Sep 10, 2001 | 06:34 PM
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From: NA
Actually, no..I am not talking about that mod...I know what your referring to..that Spiral thingy..lol, some integra has it in town and he "claims" it gave him like 10HP...I don't think so. No, this mod does revolve around the intake/Tb though...I just heard that when your doing work like this, your supposed to reset the cpu...but thanks guys!
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Old Aug 12, 2003 | 05:17 PM
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From: Zeeland/Holland ,Michigan
unhook neg. terminal then press brake a few times, let sit for 10-15 minutes.

or so i've heared
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