LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

is there a fix to low backpressure?????

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Old May 17, 2003 | 11:56 PM
  #16  
Robbie's Avatar
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Joined: Apr 2001
Posts: 586
From: Greenville SC USA
Sounds like you have a leak somewhere or a bad sensor. I had no problems after deleting the EGR and AIR tubes and etc.
Old May 19, 2003 | 04:52 PM
  #17  
BUBBA's Avatar
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Joined: Dec 1969
Posts: 3,499
From: PORTLAND, OR, MULTNOMAH
Emissions people in Oregon plug into dash. When Ed Wright did pcm he diabled some readouts and I failed DEQ. He advised that I reinstall my stocker for passing. I did. I passed.

Since then, I had PCMFORLESS reprogram my PCM. Brian enabled the codes. Last month I sailed through Emissions testing.

On the down side my engine experienced bearing failure the next day and I now have a brand new short block.

Afterall, I did have almost 8 grand on the clock
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