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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-13-2005, 09:38 PM   #21
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Needs some minor work then... I have seen most 3800'* do about 18 with a lead foot... I usually do 20-21 around town in both bonnies...

One more thing... Can you shrink your sig pics a bit for me... Something like mine maybe... Thanks

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Old 08-13-2005, 09:47 PM   #22
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Quote:
Originally Posted by jr's3800
Needs some minor work then... I have seen most 3800'* do about 18 with a lead foot... I usually do 20-21 around town in both bonnies...

One more thing... Can you shrink your sig pics a bit for me... Something like mine maybe... Thanks
awwww but bigger is better ok ill shrink them (that better?)
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Old 08-13-2005, 09:56 PM   #23
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Yes thats a bit better... Thanks

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Old 08-15-2005, 04:38 AM   #24
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so anyone got any ideas on what i should do? replace the system from the headers back with a better one? if so, what size? come on people i need part numbers/details here *smartass*
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Old 08-15-2005, 12:17 PM   #25
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Most of the piping on your car should be 2.25" from the rear manifold on back... And it should be stainless... I'd get a Magnaflow High Flow CAT 2.25 in and 2.25 out and have that installed along with a new O2 sensor.... If everything else is working as it should and the engine is at operating temps, then I would think you would pass... The 3800 Vin C was one of the lower emissions engines of the time... Not saying that they are as good as todays engines, but the way they were designed was with emissions reduction in mind... I think the moved the piston rings up a bit, the top ring inparticular to help reduce hydrocarbon emissions...

Good Luck

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Old 08-15-2005, 02:38 PM   #26
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Clean and lube your EGR valve.
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Old 08-15-2005, 03:07 PM   #27
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Quote:
Originally Posted by willwren
Clean and lube your EGR valve.
Agreed. Did 1990 have the digital EGR like 1991 did?

Even with the mileage I've got, emissions test results are totally amazing. VERY low and WAY below the limits. Like a new car.
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Old 08-15-2005, 03:07 PM   #28
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fix it and be done with it. I don't miss those tests. What we have here is inspections- horn, lights, turn signals, windshield damage.
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Old 08-15-2005, 06:47 PM   #29
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Quote:
Originally Posted by repinS
Quote:
Originally Posted by willwren
Clean and lube your EGR valve.
Agreed. Did 1990 have the digital EGR like 1991 did?

Even with the mileage I've got, emissions test results are totally amazing. VERY low and WAY below the limits. Like a new car.
Yes, all 3800 C engines used the Digital EGR, so did all 93 Vin L engines, and all 92-93 L67'*.... In 94 they went to the Linear EGR...

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Old 08-20-2005, 03:38 AM   #30
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You have nothing to loose by trying to pass the test as is. If it fails, then look at fixing a few things (keep the receipts handy), and give it another try. I believe if you spend X amount of dollars trying to get the car to pass, and it still fails, they will make the car exempt. The plates on my turbo STE got suspended because of missing the emissions test, which I received no notices for. Of course, my results when I finally took it in were far worse then just not passing the test .....

http://www.w-body.com/forum/viewtopic.php?t=32778
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