Huh? What SLI ports? Do you mean SLI bridge connector? Well seeing as you have 2x9800GTX+ there would be a fair amount of heat, so if they are a double slot design, they should be ok. I'm not really sure, I have yet to try SLI. My suggestion in this matter I guess would be to get some more fans going. A few extra 80mm or 92mm fans would help. Or even a VGA cooler might be an idea. I hope you have some 120mm case fans. Hope that helps.
I think hes referring to the spot in the shroud thats cut out for the SLi connector.
Yeahp...shouldn't have said "cards"...anyways yeah iv noticed alot of air spouts from that port...with that taped over i know need to increase the speed of the fan above my gpu pcb as another step towards cooling....hmmm