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Message: [QUOTE="KCTurbos, post: 1338730, member: 13852"] What do you mean by... throwing on the big turbo? Bigger vgt? Bigger non-vgt single? Adding a bigger LP turbo in a compound setup? Either way... are you asking whether or not you have to get your tune adjusted if you put on a bigger turbo. The short answer is yes. The cheapest part of that process will be the new tune, and probably the most important. On a side note: 30% nozzles run cleaner down low, tow easier, and some even report spooling certain turbo setups faster. The downside is that it can be harder to completely clean up and cool off the top end because your PW has to be extended so much past TDC to dump all the fuel that you are missing the "optimum" timing to dump and clean up all the fuel. [/QUOTE]

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