[Shotimes] LPM owners

[Adam Parrott]

Bobby,

The fact that you were running rich "out of the box" with the LPM does not
surprise me one bit.  Most chip makers employ "shortcut" methods for
modifying WOT A/F and other crucial parameters rather than making the
correct adjustments to the proper tables.  Combine these shortcuts with the
already-rich A/F that is commanded under the Gen 2 ATX factory programming
and you usually have the cause of most super-rich-at-WOT conditions.  This
problem could be lessened if chip makers would just employ the "proper"
tuning techniques instead of taking shortcuts in their programs.

As for your supposed lean condition, Bobby, I seriously doubt one exists.
So long as you aren't hearing any pinging, tripping any CE lights or have
any stored codes stating that a lean condition exists, then you should be
okay.  As I stated in my last paragraph, most LPM programs are setup to run
pig-rich at WOT anyways, so I doubt there's anything to worry about in your
case.  If you are concerned that a lean condition exists, then I'd suggest
you either check your codes to see if the EEC is complaining about a lean
condition or hop back on the dyno and have a look at your A/F.

Lastly, if you or anyone else has any questions or concerns regarding the
TwEECer, feel free to shoot me an e-mail and I'll be glad to answer any
questions that you have.  I happen to beez an official ATX TwEECer
beta-tester and have over a year of hard (ATX) tuning experience under my
belt, so I should be able one or two of your questions here and there.  ;)

Adam


----- Original Message ----- 
From: "Bob C" <bcampbell10@woh.rr.com>
To: <shotimes@autox.team.net>
Sent: Sunday, May 23, 2004 10:55 AM
Subject: Re: [Shotimes] LPM owners


    The car is a 93atx, tranny fully updated last summer and is still
tight. I've installed a 80mm maf, d4u1, ss cai (I like the sound), and pp
y-pipe. Other mods to the car is eibach/tokiko and 96 front brake upgrade.
Guess I've always noticed the tail pipes being sooty since I put the lpm on
originally but when finally getting the car on the dyno it confirmed it was
running real rich. On the dyno chart it started out at idle at a 1.3 a/f
reading and then steadily dropped from about 3600rpm on up. I got the lpm
back yesterday and took it for a drive and it definately has a whole lot
more power now as it get's serious torque steer on the 1-2 shift. The 2-3
shift is where I notice a bog (right word?) just before it shifts into 3rd.
Without putting it on a dyno again soon I'm hesitant about driving it much
for long distances for fear of it running lean and hurting something. I've
been doing quite a bit of research on the Tweecer also as of late and it
seems to be 'the' way to go but not being a rocket scientist I'm not sure
of the time it would take to learn the program, although they state you
could send them your lpm and they could make a file for the program to
start from. That would be another couple weeks back on the stock mode.
There's a huge difference in the way the car performs with the stock maf on
it than with the '80 and lpm,
      Any newbies to the tweecer that could give me input on the learning
curve as I'm seriously considering it for the main reasons of not having
the kind of money it'd take to fly TedB here and tune my car and I can see
the dyno time adding up.
    Sorry this is so long folks
----- Original Message -----
From: "Justin Schick" <jschick@aafp.org>
To: <shotimes@autox.team.net>; <BCAMPBELL10@woh.rr.com>
Sent: Sunday, May 23, 2004 11:09 AM
Subject: Re: [Shotimes] LPM owners


> If you want a perfect tune you need to program the LPM while you are on
> the dyno. Anything else is a guessing game.
>
> I went back and forth with Ted 3 or 4 times and never got mine right,
> it would always ping under heavy load at part throttle. Admittedly I
> never put the thing on a dyno, but I ended up getting my 80mm MAF
> calibrated and ditching the LPM altogether, and was much happier with
> the way it ran.
>
> What kind of mods do you have, and is it ATX or MTX? I can see some
> benifit to the shift changes on an ATX, but short of forced induction I
> don't see the need for one otherwise. If I were to get serious about
> having the perfect tune on my car I'd get the TwEECer RT and start
> watching over things myself.
>
>
> Justin Schick
> silver 92 SHO in KC MO
> 205k and counting quickly
>
> >>> "Bobby Campbell" <bcampbell10@woh.rr.com> 5/22/2004 9:19:47 PM >>>
> Just wondering how many times folks had to send it back for a reburn
> before finally getting it right. I got mine a couple years ago and within
> the last month finally put the car on a dyno. Running really rich
> starting right when the secondary opened up. Sent it off and just got it
> back today. It's definitely running stronger but on the top end it seems
> to have a sort of a hesitation like it's leaning out at wet. I'll dyno it
> again soon and find out for sure. Just curious folks.