2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

88 GTU failed emissions

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Old May 18, 2012 | 11:39 AM
  #51  
rotarygod's Avatar
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From: Houston
That's a HUGE difference. Are you sure that motor is ported?!
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Old May 18, 2012 | 12:04 PM
  #52  
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From: Visalia, CA
Originally Posted by j9fd3s
congrats! did they do both tests in 3rd gear? my guy does the 15mph in second, and so they both end up around the same RPM
He did both in 2nd gear. He said going to 3rd gives bad readings as it loads the engine harder.


Originally Posted by rotarygod
That's a HUGE difference. Are you sure that motor is ported?!
Yes, I ported it myself (attached photos).
Attached Thumbnails 88 GTU failed emissions-secondaries-stock.jpg   88 GTU failed emissions-secondaries-template.jpg   88 GTU failed emissions-secondaries-ported.jpg   88 GTU failed emissions-primaries-stock.jpg   88 GTU failed emissions-primaries-template.jpg  

88 GTU failed emissions-primaries-ported.jpg  
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