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Discussion Starter · #1 ·
Will tuned my car next week and have a questions. :duh:

Had a ETS Dump O2 DP and 3 Perrin 3 port (not installed) should I take it to the Tuner shop to get installed or can I installed myself then get the tune maybe the DP but don't now about the tune for the 3 port.
At this moment I'm running with AP stage 2 91 oct, after the tune will need the AP or not.
Planning to change the spark plugs, should I replaced before the tune or its ok if do it later.
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