Crit, Mike Leach writes the software for the Mopar Perf PCM, matter of fact
he has already supplied Mopar with the software however Mopar won't allocate
the money to proceed with the PCM's at this time. Thats why I went to Mike
Leach. Leach told me what the Mopar PCM specs would be( 5 degree's, 5% fuel
curve increase, 256 mph speed limiter, AC clutch lockout at WOT.) and we
agreed we'd do the same thing to start with. So far, I've had no problems at
all with pinging, I do generally run 93 octane, just because thats me, not
because of pinging. It never pings. As for gas mileage, I have noticed no
change, still get 14-16 around town, and 18-20 on the road. Mopar has the
capabilty to flash, and flash back if the techs keep the old software, but
I'd bet they do not. Mike Leach interfaces with the individual PCM and
manipulates values for each customers needs, the software he writes for Mopar
is flashed into a bunch of new PCM's by Mopar. As for power increases, about
10 hp !
Matt Y2K-HEMI
'00 RC 4.7L 5 spd
In a message dated Tue, 9 Jan 2001 4:36:15 PM Eastern Standard Time, Crit
Bennett <crit@engineer.com> writes:
<< Okay Will, you got me. I forgot that I could switch between stock and
Mopar
PCM... I was just saying that the Mopar units won't do me any good because I
put about 30k a year on the truck and am not about to burn 93 in the tank.
When decelerating in neutral I have the idle fluctuation, but it has never
stalled or been about to. The truck ONLY pings at WOT through 2nd and 3rd,
between 3000 and 4500 revs or so. I'm surprised that Mike Leach gave you 5
degrees without any ping - that's pretty dang good. What did your mileage go
to after Leach's work, and what did you specify to him? I'm surprised that
he'd have the computer figured out so quickly, it being a new engine and all.
If he flashed your stock PCM and can reflash it if you don't like it, why
can't
Dodge? You clearly get better drivabilty than stock, so I'm curious about
mileage and power changes. Thanks.
-----------------------------------------------
Date: Tue, 09 Jan 2001 14:50:00 EST
From: WMBARRET@aol.com
Subject: Re: DML: TSB #18-023-00, Rev. A. Re: Crit
Crit, What exactly are you refering to when you said
"the new PCMs won't do me much good when (if) they're released for the 4.7.
Because you can't go back afterward" ??? Are you refering too a Mopar
perf.
PCM, or the updated Flash from the TSB??? I realize once reflashed you can't
go back, but you can always swap your old PCM on right?? Are you having
Pinging problems now??? rough idle??? I had the rough idle when mine was
new, since then (22K now) I never have that problem, AND even with my Mike
Leach custom PCM with 5 degrees advanced timing I don't get any ping, never
tried 87 gas, I have tried 89 before, no ping.
I'd recommend Mike Leach, he can fine tune the PCM just like you want it,
whatever advance you want, or fuel curve increase, totally custom, and if you
don't like it, he'll put it back to stock and refund your money!
Matt Y2K-HEMI
'00 4.7L 5 spd
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