Anyone ever dyno before and after installing a Cat?

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T78supra

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Joined Jan 29, 2002

1,495 Posts

Discussion Starter • #1 • Feb 22, 2002

My T78 just dynoed at 601 with a 3" cat at 15psi 11.9-1 A/F on pump gas.

The shop is now removing the cat and dynoing to see what the increase is. I'm thinking about 30 HP.

I wish my EVC III wasn't on the fritz so I could dyno at 20psi.

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