hey guys its akes again aight i just took at trip from Va to Atl,Ga and my car did ok but it over heated alittle so we stoppped and it cooled down and made the rest of the trip with the sunroof open and windows down and it was fine but once i got down there and i got off the interstate i was driving through my sis neighbor hood my shiftes felt like the cluthch was slipping and i had no power and my exhaust sounded horrible i drove it today(a week LAter) and it was fine. What happened?????

Are your fans coming on?

yea

How old are your spark plugs/wires???

brand new
bosuch pat 4s

Josh,

How recently did you install the pacesetter headers? Have you checked to see that all of the header bolts are tight? It is possible that they may have come loose, and I think a leak would certainly cause a loss in power. I remember when I tore a hole in my stock exhaust manifold on the 200SX SE-R. I hit a curb in hooters parking lot, and it got real loud and was making popping noises. I had also suffered a severe loss in power. Just a thought. As far as the plugs go, I'd try to move on to NGK plats w/ OEM wires in the future.