Now here's a nugget of info you can believe or not... We opened up the airbox and found that the trumpet had been removed. A local racer ran his similar PRO-3 car on the dyno with and without this trumpet and found removing the trumpet LOST 4 HP!
So we yarded a trumpet out of my street E30 to get that 4hp back!

Side shot of trumpet:

End shot:

Re-installed:
So we yarded a trumpet out of my street E30 to get that 4hp back!

Side shot of trumpet:

End shot:

Re-installed:

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