Ok let me first say that I am a bit confused why the SLE and the SE have the same hp rating yet the SLE sports a much more efficent dual stainless steel exhuast system! Am I right in saying the SLE should have another 5 or 10hp tacked on the Pontiac rating? And it also is a marketing question wouldn't you want a performance and hp difference to further change the models output?

that is an engine rating.. but the exhaust may make a 2hp or so but thats about it.. nothing you could ever notice and may never see on a chassis dyno at the wheels.

Thanks!

Difference is body and options, that'* what is really supposed to make the difference in the trim levels.

True my friend true... :P

the dual exhaust is for looks only. It doesn't even split until the rear wheels. I don't think the dual exhaust even flows better actually?

The single exhaust is proably sufficient for the N/A motor and outflows the motor. The dual on the SLE is not netting anything but looks. A single exhaust on an SSEi however would be limiting.

Thanks agian!