as far as exhaust temps, people believe that the cooler the the better, not in the case of exhaust. exhaust gasses love to flow fast, and the faster they flow, the better the car breaths. the best intake system starts with a good exhaust. if the gasses flow faster they will move out of the cylinder faster and draw in a better quality of air into the cylinder.
now, the way to keep exhaust gasses flowing faster is to keep them hot. ny going with ceramic coated headers you are allowing that pipe to hold heat therefor not allowing the gasses to slow down. people that hallow out their cats, all they are doing is making a place for those gasses to expand and cool down, so what they are doing is allowing those gasses to get stuck in a sense.
Me, what i like to do is get a good set of ceramic headers and still put header wrap on it to make that manifold hot as heck. gotta makesure the material of the manifold can take it though without major warpage or cracking.
i do it for performance and on certain years, for the 02 sensor.
1998 GMC Sonoma Ext. Cab two seater.... system is a must!
1972 Camaro-The Beast
2008 Chevy silverado. 3-5 drop. 18'* nice grill...nice truck...
1974 Datsun 260ZR- 94 RB25DET Swap... Stupid fast!!!
Originally Posted by Bwayney
This is awkward...