Quote:
Originally Posted by conrad_s13.5
so,....will this need a retune?
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Absolutely, 1j head + 2j booty = retune. The 2jz has a longer stroke, bigger bore, and when mated with the 1jz head he is definitely going to have to re-tune it. Especially with this case since it has probably had head work done and an aftermarket turbo that will need to be dialed in to match the new powerband ( Never read your 1jz swap thread so I'm just assuming here
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