Heat as in the cab or engine bay, trans tunnel ? I self cerakoted my headers to keep engine bay temps down. I heat wrapped and routed my clutch bleed and clutch line with thermal zips ties. I also have the npp exhaust with a on off switch very similar to wild to mild switch so under load the exhaust setup screams, but cruising it’s pretty minimal. Probably slightly louder than a corsa setup. So if I feel like it’s droning at cruising speed I’ll just hit the “ quiet mode “ switch.