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New TB/Plenum may be messing car up... Wont downshift at WOT...

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Old 08-14-2008, 10:12 PM
  #1  
GStam66
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Default New TB/Plenum may be messing car up... Wont downshift at WOT...

Ok so i got a ProProducts 75mm tb and plenum, installed it 2 weeks ago, love it, definitely feel a difference in throttle response but theres one little issue...

Sometimes when i floor it from a roll, the car doesnt downshift. Car is also idling a bit lower than before, about 100rpms lower.

Before the TB and plenum, i ran a 9.07, afterward, best i could hit was 9.3.


Im assumin the TPS was tweaked a bit when we were transferring it over to the new TB, but i want some input and ideas here before i go and mess with it.
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Old 08-15-2008, 10:40 AM
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ackuric
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test your tps voltage and make sure its 4.5+ at wot
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Old 08-15-2008, 12:25 PM
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GStam66
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k, would it also be possible that 30-40 is just a dead spot for automatics when it comes to going from a roll?
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