Help With tranny settings Please.

[Brief Encounter]

Hello all,

Ive been unscrewing my hole tune, and it's transmission time.

So far Ive fixed the shift points, and am currently happy with my 4th gear lockup speed.

Everything else i have no idea what I am doing.
I have calculated a 6% Difference as to what the speed should be, and what it is.
IE, Rpm's 5800=67 mph, should be 73.

Could someone give me so pointers as to what would make my transmission last longer and work more efficently please.

Here is the tune.

PS. Specs in sig.

[flea]

For starters set the TCC duty cyle max to 100 and min to 90. You don't want the TCC slipping during lockup.

[Brief Encounter]

can you explain exactly what that does, as at 100% there is 0% slip.
and why 90min, what is the point to that.

thanks
Rich

[flea]

GM (and other auto manufacturers) typically use TCC settings that result in a soft, smooth lockup. Most people don't buy cars for performance or modify cars for additional performance.

Smooth engagement of the converter = slip = premature ware; not a big deal for 90% of the cars out there because they are low torque and horsepower.

With TCC duty cycles set correctly for high performance applications engagement feels more like you have shifted into another gear as opposed to being transparent with OEM settings.

I'm not sure this is necessarily a great analogy but think of PE enable settings for most OEM applications ..... PE is typically delayed (primarily for EPA requirements/better gas mileage). For performance cars when you hit WOT you want to enter PE immediately, not have it come on gradually so 1,000 rpm's later you have actually entered PE and the target AFR.

[flea]

you are not likely going to get the calculated mph vs actual rpm to match.

Foremost, it takes time for the shift to occur. As the rate of engine acceleration increases the difference between calculated/estimated mph vs actual rpm will typically increase (in first gear things happen really fast). What factors are referenced for the shift to occur? Can be either mph or rpm (typically the one that is hit first).

[Brief Encounter]

yea, it took me a few trys to figure out the lag time.