I too tested an excessive with a q45,12" or so intake pipe and then lengthed it about 18" additional and gained 10whp without tuning yet. Payu is right.
That forum members car eggman on his Dyno day. Look at the graph. First pull is #1 (blue)look at his hp and the similarity in the graph to yours.
The red is after the resonator was removed and s...
While I can understand what you wrote.......you seem to not have read his original post clearly.
He DOES have a 3" exhaust.
While I can agree with the stuff you say it's not relevant to his issue.
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We will be testing that mod here soon also. P10FTW bought the stuff a while ago but just started doing other things and put it aside.We are positive we will get gains,based on what you physically s...