Quote:
Originally Posted by SeventyOne
nice. Just watch for pinging at cruise and WOT. Personally I think all in at 2500 might be a little early for a heavier truck. You could correct it at cruise if your vacuum canister is adjustable but for WOT you might need a heaver set of springs.
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Following my previous post I took your earlier advice and moved the vacuum advance source from ported to manifold. And like you said, peppier response, and not just off-idle but at all speeds. The truck used to feel maxed out at 60 miles an hour with little pull after that. It now pulls hard up to 75, where I back down due to high engine speed. No detonation under any conditions I could induce including WOT, highway cruise, and pulling inclines at low RPM. I had to back initial down to 11* due to hard hot-turnover and ended with 33 at 2800 RPM. also adjusted the idle AFR using a vacuum gauge. I am very happy with the results of the total tune!
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