1meantransam

iTrader: (8)

hey ive been running the CraneCams programmer on my car for a while and i have a question about 2 things, if i program it then deprogram it often will that screw up my computer, and if i have both the transmission settings on at all times with programmer will that fry my tranny (performance shift and firm running on tranny)

jimmyblue

iTrader: (11)

In general I think the handhelds try to limit you to
safe settings (though they might not succeed all
the time). It seems to me more trouble comes from
inadequate line pressure (fried frictions) than too
high.

Every time you reflash you run some small risk of
hanging the PCM, not damage per se but once
confused it can take a dealer reflash etc. to get
back to right. Talking communications glitches, not
an actual hard damage but a mis-write of the
memory; the memory itself should be plenty durable.

There ought to be a point where you get past the
need to mess with it so often, hopefully.

JimMueller

iTrader: (9)

I had a 4L60e rebuilt by Art Carr back in 1997. I was also using the firmest shift settings in the Hypertech. I was going through 3/4 clutch packs every 1-2 months. Art wanted to drill a hole in the tranny housing and install some sort of line pressure attachment, but I couldn't find a local shop who would warranty the case.

I'm sure there are better ways to work around the line pressure issue since then but I wouldn't know because I switched to a M6.

Frost

iTrader: (45)

If you have a shift-kit or built tranny the pressure settings need to be left stock. Increased pressures are provided through the build, turning it up in the ECM can bring it to levels that cause damage relatively easily. If the tranny is built, take out TM, set shift points and lockup points to suit and keep times and pressures stock.

1meantransam

iTrader: (8)

well see thats the thing, its stock....i only mess with it to kick the tranny in because that shifting helps out alot for racing, if i had more horse i wouldnt bother but it doesnt have the ***** to back up the lag in shifts.

Frost

iTrader: (45)

shift-lag is TM pulling spark timing.

moehorsepower

iTrader: (3)

Go vacum modulated and let the engine demand the amount of line pressure. No need to adjust anything in the PCM less shfit points ect..

1meantransam

iTrader: (8)

so do you think its ok to leave that shift settings on with the programmer?

1meantransam

iTrader: (8)

???..

1meantransam

iTrader: (8)

anyone?

Frost

iTrader: (45)

Unless you can post or tell the settings, I don't know how you can get an honest response to that.

1meantransam

iTrader: (8)

ill let you know soon