07-09-2010, 10:59 PM
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Senior Club Cobra Member
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Join Date: Nov 2003
Cobra Make, Engine: ERA #698 428 Toploader
Posts: 292
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Not Ranked
The side pipes look huge on the outside but its on the inside that counts. My 1st set had 2" pipes with a baffle so I had 4 2" primaries going into a 2" pipe, very restrictive. Then I went to a set with 2.250 glass packs and now have 3" glass packs. I did other work so I cant tell how much the pipe changes added.
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