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Why does HPP3 screw up the ecm?

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Old Apr 30, 2002 | 04:40 PM
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99SSragtop's Avatar
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Default Why does HPP3 screw up the ecm?

I have been reading some posts and it seems some guys are having some problems with thier computers(cars) locking up.I know you don't unplug the unit before down load is finished and also heard thier battery went dead,errr why the problems.
Thanks Andy
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Old Apr 30, 2002 | 07:00 PM
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Default Re: Why does HPP3 screw up the ecm?

ive had no problems. well, only once-i think i started the car or something and it freaked out. i thought i fried the pcm but it was all good.
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Old Apr 30, 2002 | 07:17 PM
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Default Re: Why does HPP3 screw up the ecm?

The problem occurs when the program is being loaded to your PCM and your connection is interrupted. Either by disconnecting the cable or by battery failure. Both instances can cause your PCM to lock and need re-flashing. Just make sure your battery is in good shape and don't mess with the cable wfile it's programming. Outside of those setbacks, I like the HPP3
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Old Apr 30, 2002 | 07:54 PM
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Default Re: Why does HPP3 screw up the ecm?

can you hook another (by booster cables)cars battery to the LS1 's just to be safe?
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Old May 1, 2002 | 06:39 AM
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Default Re: Why does HPP3 screw up the ecm?

i thought of that but hypertech says not to do it because there can be power surges which is bad.
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Old May 1, 2002 | 02:56 PM
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Default Re: Why does HPP3 screw up the ecm?

what about having a trickle charger setup while doing the down load?
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Old May 4, 2002 | 08:58 AM
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Default Re: Why does HPP3 screw up the ecm?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 99SSragtop:
<strong>can you hook another (by booster cables)cars battery to the LS1's just to be safe?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes you can. Just make sure the other car is not running. Another option is to take a fully charged battery you have lying around, and jumper that to your cars battery (same thing, actually). That way, absolutely no worries on battery failure or low voltage. It's how I always do mine. Works great.
Ed

<small>[ May 04, 2002, 09:00 AM: Message edited by: C5XTASY ]</small>
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