He's most likely pushing 400 crank hp at best and for whatever reason, he's referring to it as rear wheel. Maybe he's a novice? Looks like it considering the pics.
400 crank is your max NA and that's with a solid tune.
Ask him what tune he's running.
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Favorite Quote.
"I'm not gonna kill you... I'm just gonna Bash Your Face In" Jack Nicholson-"The Shining". 1980
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