Quote:
Originally Posted by Tourbillon
So now we need someone to dyno with the snorkel. I unfortunately have a hole in the air box. If I remember correctly, the hole was the only place for the intake to draw air from. If you cover this, where does outside air come from?
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There is a duct that lead from the airbox to the front bumper, just like the E60 M5 intake design. If any of you remember, this is why RPi designed their own block off plates for the E60 M5 intakes. There was a hole on the bottom that came from near where the front brakes were. RPi discovered that by covering them with a block off plate, they dyno'd an extra 5hp gain. The hole ends up creating a vacuum effect, thus robbing the air that is supposed to be going into the engine. At least this is how they explained it to me. Seems to make sense. This also seems to be proven now that Fly M5 has blocked his holes off, which I guess eliminated that vacuum effect. But who knows it could be completely something else.
