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Boat has twin 598 Chevy big blocks with PSI blowers. On low boost it went 158mph off of GPS at maybe 3/4 throttle. Its pretty impressive how fast it can accelerate. Each engine makes 1650hp on race gas and full boost.
The boat had some issues with idle, air fuel was off and it burned up a couple pistons on the old tune. These are all out race motors in a boat. They mainly wanted a safe tune and the idle and air fuel fixed, not necessarily more performance. When we were tuning it we were gaining mph at the same rpm so it was gaining performance as a byproduct of getting the tune cleaned up.
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Mostly DCB around here. 
Tuned something different 
