[Shotimes] Re: LPM program for D4U1

[Kevin & Cheryl Airth]

John:
 I have my LPM set up to NOT modify the line pressure at all from stock. I
have a FPS ATX with the TransGo shift kit. I had Doug L. build it to take
anything up to and including a blower or nitrous. I have since backed off
from the blower idea mainly because of Ben B.'s experiences and comments. I
have a very hard 1-2 shift at any throttle opening but a very nice 2-3 and
3-4 shift. Downshifting is also great. I would also like to tone down the
1-2 shift but have not been able to find out how. Even after I had Ted B.
reburn the LPM to leave the line pressure alone the 1-2 shift did not change
much that I could tell.  I think mine is due to the internal tranny mods. My
wife's ATX was also built by Doug L. with the TransGo kit but I told him to
just make it a great "stock" transmission. This unit shifts superbly with no
harsh 1-2 shift or any other anomalies. Flat out accelerating it will chirp
the tires on the 1-2 shift but at low to normal throttle openings it is nice
and quick and firm but no harshness at all. This car is stock and still has
the H3Z1 PCM with NO LPM  too! Now I think this would have been a better
route for my SHO also.
 I am considering building a external line pressure adjuster as Ben B. has
but don't know if that would help or not.

 My car is almost identical to yours. I have UDP's and a 2" true dual
exhaust in addition to your mods. I use Redline Synthetic ATX fluid. My
wife's SHO uses Mobile 1 synthetic ATX.

 The EPC (Electronic Pressure Controller) measures and adjusts the line
pressure so any variations from internal transmission differences should be
adjusted out.

 I hope you can find something out on this. I did not and have just lived
with it! I have had 3 different programs for my LPM so far and right now
have run this one for almost 3 years. I thought with more mileage the tranny
might change somewhat but I have about 55K miles on it and no changes yet.
It's too bad Ford did not put the TransGo kit in from the factory. I think
they would have made money on the deal!
.
.



> I'm not interested in bypassing Ted B., but rather hear peoples
experiences
> with various changes so I can pick the best mods for my application. That
> does a couple things; educates me on what can be done, and should reduce
the
> development iterations. Ted B. will get the job reprogramming the chip.
>
> I'm curious about the line pressure comments. Are there enough mechanical
> variations from one atx to the next to cause the programming to be unique
> for a particular atx, i.e. spring forces and piston friction.
>
> The tuner you mentioned, is that hardware/software as in SC
Tuner/LPM/etc.,
> or some guy programming for you?
>
> John W.
>
> ----- Original Message ----- 
> From: "Adam Parrott" <parrotta@usa.net>
> To: <TechSHO@topica.com>
> Cc: "John Weidenbenner" <johnjweid@charter.net>
> Sent: Sunday, January 18, 2004 7:55 PM
> Subject: Re: LPM program for D4U1
>
>
> > John,
> >
> > Thanks to my tuner, I know exactly what Ted does with his ATX programs.
> > Unfortunately, I promised him that I would not share any of his code or
> > information with anyone.  Your best bet is to get with him and have him
> > reprogram your LPM.  The line pressure /is/ completely controllable
(from
> > nothing to blow-your-tranny harsh) and also modifiable by Ted.
> >
> > FWIW, getting the firmness right at the various throttle positions can
be
> a
> > kind of black magic.  I've had my tuner for a year now and am still
> playing
> > with the values.
> >
> > Adam P.
> >
> >
> > ----- Original Message ----- 
> > From: "John Weidenbenner" <johnjweid@charter.net>
> > To: <TechSHO@topica.com>
> > Sent: Sunday, January 18, 2004 9:59 AM
> > Subject: LPM program for D4U1
> >
> >
> > I'm running an LPM 80 MAFS can/cone/horn setup on my atx. No other mods
> > - no UDP, stock exhaust.
> >
> > Currently, the program has a boosted line pressure that is too harsh for
> > me and the atx. I don't know what % the boost is set to (or if it's
> > variable at all vs. on/off). Anyway, the 1 to 2 shift at >50% throttle
> > is pretty harsh. 2 to 3 is nicely firm.
> >
> > Also, I'm told that the MAFS tranfer function is enricheded 10%. It
> > doesn't blow black smoke and the sensors are handlind it without setting
> > a fault code. The fuel mileage is roughly down by 10%m maybe a little
> > more.
> >
> > No other program changes that I'm aware of.
> >
> > I'd like some input form those with similar set ups befor I go back to
> > Ted for a new program.
> >
> > Thanks,
> > John W.
> > 93 atx