That's a tough one to gauge. 50-100 I'd say or just enough to torch the exhaust wheel probably. You'd have to ask McRat how much he was using when he had his turbo issues.
will the PPE let you back any timing out of it? How much timing does it have now? Doesn't the 350 tune smoke like a pig? aka get hot?
I agree with Kennedy... your hard parts/charger ain't gonna like you for long. Secondly unless your in 4 hi it should simply blows the tires out on the street.
If you gotta anyway... start small, 40 is noticable.
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