Quote Originally Posted by Tech5
guess you dont know what cold air sucked into the OPEN / Header exhaust can do to a motor huh?
So sucking in ambient air temp can cause motor failure?

Gee golly willigers, i better not let my engine breath in any air at all.

What temp do you think ENTERS the motor in the first place?

The exhaust gasses leave the combustion chamber with such force that the only time reversion could even take place is under a lift throttle condition. And even then the throttle plate is closed, and the motor is pulling vacuum anyway.

Show me one car where they took their exhaust off and their motor failed from reversion and you have conclusive evidence.

I rode around for over a YEAR OPEN HEADER REVVING TO 10,000 RPMS ON A STOCK BOTTOM END GSR.