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Originally Posted by rowan194
Cheers. Didn't think of that. If the output is a little dodgy it would explain why the trans didn't even thinking about kicking down until the point that I released the accel, maybe it didn't even see me pressing harder for those few seconds... but wouldn't the butterfly being physically further open still do something to the engine revs?
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Yes, these things can cause a bit of havoc when they play up.
I guess with the butterfly open, you would let more air into the intake. Given the map sensor is in the intake, it would register and it would raise the rpm. Suppose if the TPS was not corresponding to this action, things like the injector pulse, gear selection would not necessarily be able to react to your commands.
Let us know how it goes. Good luck.