ok, the car was overheating so i didnt have a chance to really feel it, got the new hoses,etc and thermostat, everything is good so far...

now, im driving it hard , and the car really lags till aout 6500rpm and i dont know why, really bad..........i continued driving it tho for about 2hrs tonight, and as time went on it did get faster, now im just sceptical, what could this be?

thanks !