i doubt your gonna feel much at idol
ummm or leave your hand there and let it get burned lol. Like 1fastdad said, you won't feel much. For you to really feel something, you are gonna have to leave your hand there so it can build pressure over time in the exhaust. After a collection of exhaust accumulates, then the pressure will be noticeable against your hand
But i want to know, what made you thinking of wanting to do this? Are you asking how much pressure should you be feeling? Well we don't measure pressure like that on exhausts. We measure cfm flow.
If you want to know the overall cfm flow needed on our cars, it's roughly 430-480 to maximize 200hp. Since most of the time 200hp is netted only at certain rpms you don't need a for sure 430-480 cfm flow. Like for our cars the stock svt mufflers flow 320cfms. IS that good? well flowmasters flow 350cfms....
The cat material which i assume is ceramic, have to go check which i never have done. I'm 90% sure it is ceramic, has the ability to flow 1000cfm before the pathing is too small to allow exhaust fumes.
So thinking cat material is really holding the car back is false. It's just slowing flow down before it can travel through the holes. Any obstruction will slow air flow down but too much flow will result in emptying the cylinder head too quickly and that is what makes you lose power.
BALANCE IS KEY HERE!!!!
Sorry i went off topic here.