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Old 11-12-2012, 03:51 PM
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F-BIRD'88 F-BIRD'88 is offline
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I'm having trouble picturing 3.5" spiral flows to a 3" side pipe.
The "muffler" insert goes in the 3" side pipe. If the flow tech shorties are not 1.5" primarys you can use them as the start/primary. Some of those shortys have small pri tubes size. should be 1.625" outside dia minimum.

The hedmans are a good buy and can be customized too.

this is the basic 4-2-1 long tube Y collector configuration


Last edited by F-BIRD'88; 11-12-2012 at 03:59 PM.
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