Did several before and after checks to compare the intake manifold temperatures in mid Texas summer heat. Average difference was 33 degrees Farenheit lower, using a laser temp gun, after 35 min of stop n go traffic. I can hold my bare hand against the manifold now and it is only mildy warm. I would buy this again, definitely. Plus, not having to use 2 gaskets is a bonus as well!
Reviewed by: Jason from Plano, TX on 3/5/2013