ricklmesa@cox.net

I got the NGKTR5's with my procharger kit and thats what im running now. The NGKTR5's are standard heat range copper Vpower plug for high performance. I was wondering if I could run the NGKTR6's? Those are a single heat range "Colder" Vpower plug for hi -boost & NOS applications. Now Im not running hi boost but I am running some. Could I run the tr6s with out any troubles? Would the car haft to be retuned? I got about 1000 more miles on the tr5's untill they need to be changed.

bscottie

a lot of debate over running the tr6, it seems that is what vortech ships/installs with their s/c, several people running them and not having any trouble yet, the tr5/tr55 is what I think most are running as it is actually listed as a plug for our car, just with the copper core