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Is It A Good Idea To Reflash a PCM Periodically?
#1693676
11/02/14 10:15 PM
11/02/14 10:15 PM
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Joined: Jan 2003
Posts: 12,861
Gloucester,VA STOP MOVING HERE
RangerDan440
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 12,861
Gloucester,VA STOP MOVING HERE
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Just what the title says. The warranty on my Challenger is up in a couple of weeks and I was thinking of doing it before it expires.
68 Valiant 408
69 Charger 318
69 Cougar 351W
70 Torino GT 351C
71 Country Squire 351W
71 Road Runner 440+6
71 Satellite sedan 318
73 Duster 318
73 Challenger 383
77 Grand Prix 455
83 Malibu 9C1 383
84 Delta 88 403
87 Grand National
96 Ram 360
09 Crown Vic
10 Challenger R/T M6
15 Challenger Hellcat M6
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Re: Is It A Good Idea To Reflash a PCM Periodically?
[Re: RangerDan440]
#1693677
11/02/14 11:36 PM
11/02/14 11:36 PM
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Joined: Mar 2007
Posts: 3,277
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,277
West Coast, USA
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The car learns and self-adjusts to a limited degree over a few hundred miles. When you reflash it, it erases all that learning.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Is It A Good Idea To Reflash a PCM Periodically?
[Re: RangerDan440]
#1693678
11/03/14 12:02 AM
11/03/14 12:02 AM
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Joined: Sep 2003
Posts: 10,645
Houston, Tx
AlexP
I Live Here
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I Live Here
Joined: Sep 2003
Posts: 10,645
Houston, Tx
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Quote:
Just what the title says. The warranty on my Challenger is up in a couple of weeks and I was thinking of doing it before it expires.
I don't feel that it is wise to do it frequently. The ECU is very vulnerable while being flashed.
The car learns constantly..unless you've had something mechanical go bad and cause the tune to go astray, leave it alone.
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Now if you've loaded an aftermarket tune...that's a whole different animal 
