powertone exhaust - hows the flow?
 

anyone ever get any numbers or can describe evidence of gains from this? batman?

Someone correct me if I'm wrong, but I believe Powertone is just a muffler and tips and not a full exhaust.

so i guess i could just weld it to some big piping and it'll be alright?

what about the claims though:


The World's First Negative Back
Pressure Muffler

PowerTone's unique design creates a vacuum at Idle, which turns into Ram Exhaust at Speed!

POWERTONE unleashes your engine's power by sucking exhaust gasses out instead of pushing them through conventional mufflers that create power-robbing back pressure. Our Patented, Open Chamber design allows air pressure differentials along with the speed of your vehicle to give you:

an increase in horsepower
instant acceleration
better gas mileage
deep throaty sound
exhaust excavation

they have both tips and mufflers.

flows the best.

makes my FD sound like an Italian car.

words can't describe at WOT.

during idle it gurgles like a powerboat in the water.