Car chemistry inserts

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Feb 15, 2006 | 12:39 PM

unknown_host

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From: Medford, Oregon

Car: 1989 Iroc Z L98

Car chemistry inserts

Anyone have any idea how well these inserts flow? Anyone ever heard them in person?

Feb 20, 2006 | 09:09 PM

1bdbrd

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From: Kansas City

Car: 1991 Trans Am

Engine: L98

Transmission: T56

ls1 guys tried them at one point to take away the rasp and it did. they sounded great but hurt hp quite a bit. i think some lost 20hp or so if i remember right...

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