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Making it shift like new car..??

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Old Mar 23, 2014 | 07:50 PM
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Default Making it shift like new car..??

Hello, have an 01 ss, when I first got the car it would shift right at red line without letting off the gas. Now that it has 30k more miles not so much, kinda takes it's time and seems like it will go past the old shift point. What do I need to do..???... Planning on changing oil filter. Servo? Accum? Shift kit? Thanks!
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Old Mar 24, 2014 | 10:30 AM
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No ideas? I don't think it needs a shift kit, it worked great before....
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Old Mar 24, 2014 | 11:00 AM
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Is it slipping? Is it not shifting at wot at all? Give me more info
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Old Mar 24, 2014 | 11:10 AM
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It just has a delay when shifting at wot. Don't feel like it's slipping, just a delay engagement
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Old Mar 24, 2014 | 11:13 AM
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Have to let off the go pedal to shift or else it feels like it will just keep revving. Before u could just stand on it and it would shift right at redline, with no worries.
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Old Mar 24, 2014 | 11:46 AM
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Have you let it bounce the limiter yet at wot?
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Old Mar 24, 2014 | 11:48 AM
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Nope, scared lol
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Old Mar 24, 2014 | 11:53 AM
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Oh ok...hmm.. Is it every gear? 1-2 shift 2-3 3-4?
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Old Mar 24, 2014 | 12:04 PM
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Ya 1-2 2-3. I will rev it past the shift point but won't hit rev lim. And let off alittle to shift.
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Old Mar 24, 2014 | 12:06 PM
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Tranny shops are telling me to put the scanner on it, like some sensor is not working properly, map maf
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Old Mar 24, 2014 | 12:48 PM
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Yeah it's probably just a sensor.. If it's still shifting fine then nothing is blown
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Old Mar 24, 2014 | 01:52 PM
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I'll try that, thanks
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Old Mar 25, 2014 | 01:19 PM
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State of tune, particularly air-mass-flow fidelity, can
drift and affect trans behavior via the line pressure
(which follows torque, from air mass, in a chain of
figuring that you only get to see the surface of).

Me, I'd start with cleaning the MAF and eliminating
any trickery (incl porting, aftermarket pieces, etc.)
anywhere close-in.
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Old Mar 26, 2014 | 05:32 AM
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Originally Posted by jimmyblue
State of tune, particularly air-mass-flow fidelity, can
drift and affect trans behavior via the line pressure
(which follows torque, from air mass, in a chain of
figuring that you only get to see the surface of).

Me, I'd start with cleaning the MAF and eliminating
any trickery (incl porting, aftermarket pieces, etc.)
anywhere close-in.
I didn't know that, but I did wonder why my trans shifted much harder at part throttle with the maf unplugged.
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Old Mar 26, 2014 | 11:26 AM
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Well, -much- harder is probably a fault-code response,
PCM knows it doesn't know something and makes a
safe choice. Somewhat harder, could just be that the
MAF and the SD tune aspects are in some disagreement.
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Old Mar 27, 2014 | 01:24 PM
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Hmm, I don't think this K&N filter is helping any with my sensors.
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