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15 psi studder

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4g63awdtalon

20+ Year Contributor
252
0
Mar 28, 2003
omaha, Nebraska
91 galant

i turn the boost up to 12 or even 14 pulls fine

turn it up to 15 or higher it studders the whole car shakes
i have fuel cut elimanation, 2g mas, ngk new plugs but 2 steps colder, 650 ccs

i have it tuned on the wideband to mids to low 11's

can any one tell me why it studders over 15 psi...wouldnt i detect a boost leak before that??????????

:dsm:
 
caps were just replaced not but 2 weeks ago along with keydiver chip...also the studdering had been happening before the ecu?!?!?!?!
 
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