JCunningham

iTrader: (4)

Magnuson TVS1900 @8psi on a 2012 6.2L 10.5:1 comp. w/ Headers.
Should I be running different plugs? Magnuson said stock with 6psi.

03sierraslt

iTrader: (22)

I would be, try some NGK BR6EF. That's a non projected TR6.

JCunningham

iTrader: (4)

so should i just run the standard type BR6EF or do they make a platinum or iridium plug

03sierraslt

iTrader: (22)

Run standard, avoid platinum tips etc. standard plug dissipates heat faster from tip to help avoid detonation.

TX Tahoe Z71

iTrader: (28)

+1, that's what I run

Area47

pull a plug on number 7. count how far down the threads the carbon line is. if it's more than three, put a colder plug in there.

JCunningham

iTrader: (4)

ok thanks BR6EF it is when i put the headers on

AKlowriderZ71

iTrader: (22)

I agree with these guys.

MB2008LTZ

Ok so what's the difference between BR6EF & TR6.....? I recently picked up a Roush tvs1900 and it did not have the "colder heat range" spark plugs. I have asked around and have gotten several different answers ....So which is best for me? Truck is 2008 5.3 non flex fuel.

03sierraslt

iTrader: (22)

Please read the above post from this thread. For both parts of your question.