more line pressure? video inside
07-31-2011, 04:58 PM
#2
i dont like how the rpms jump up right as it is going to shift. the car never did this until i got the tune after my cam swap. i know the line pressure was bumped up on the previous tune before the cam, but i think the tuner actually ended up lowering line pressure. let me know what you guys think. thanks in advance.
08-02-2011, 07:55 AM
#4
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Poor line pressure rise can indeed contribute to flare shifting. You need to get a gauge on your tranny and run it the same while observing line pressure in order to verify that the line pressure is indeed the issue.
I do not advocate running factory EPC's in high performance application for the very reason that a Tuner can knock out a transmission because of inexperience. It's really easy for a Tuner to just turn a blind eye to line pressure management and simply say that your transmission is failing after a significant mod like a converter or a heads/cam swap.
I prefer to see vacuum modulators in any 60e that has a high stall converter or engine mods. The line pressure rise is very linear, and it's the same regardless of what the Tuner does. It becomes immune to a Tuner who has no clue how to manage line pressure.
If you continue to drive your car at WOT with those flare shifts you'll knock out the 3/4 clutches in no time. You might want to have a different Tuner take a look at it for you.
I do not advocate running factory EPC's in high performance application for the very reason that a Tuner can knock out a transmission because of inexperience. It's really easy for a Tuner to just turn a blind eye to line pressure management and simply say that your transmission is failing after a significant mod like a converter or a heads/cam swap.
I prefer to see vacuum modulators in any 60e that has a high stall converter or engine mods. The line pressure rise is very linear, and it's the same regardless of what the Tuner does. It becomes immune to a Tuner who has no clue how to manage line pressure.
If you continue to drive your car at WOT with those flare shifts you'll knock out the 3/4 clutches in no time. You might want to have a different Tuner take a look at it for you.
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08-05-2011, 01:58 AM
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08-05-2011, 04:36 PM
#12
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I have a performabuilt lvl 2 and a yank pt4000.
The thing shifts perfect with my tune and stock pressure. There is a whole bunch of other stuff to tune for. Mine drove like **** on the stock trans tune. If you had efilive or something you could copy my tune.
The thing shifts perfect with my tune and stock pressure. There is a whole bunch of other stuff to tune for. Mine drove like **** on the stock trans tune. If you had efilive or something you could copy my tune.
