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Hello, I have a stock 1977 L48 (dual exhaust only with stock muffs).
I am wanting to add headers, 2.5 inch pipes, hi-flow mufflers, intake etc. I was wandering if I should dyno before starting any changes to see if there is actually any improvements.
I know the L48 is a dog in muscle car standards...but hey, it's what I got.
Also, I live in the Forth Worth, TX area, anyone know of a dyno shop?