Ngk Tr-6
The tr-6 is a colder plug than the stock tr55. It is recommended to swap to colder plugs on FI or nitrous setups. Heck, even when n/a I had to change to the tr6 because my tr55 ran too hot.
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Thanks alot for the input fellas. That helps alot. I have good thing about them I am going to gap mine about thirty on 8psi. Hopefully fix my spark blow out on the TR55 that were gapped at 40.
Originally Posted by MiaSSmaro98
pro john why not?what im i suppose to gap it to?why is a colder plug better?
You dont want to run a hot plug like that because of detonation
The combustion chamber pressure rises when you boost and casues more heat. The hotter plug wont pull the heat out of the combustion chamber as well as a colder plug. Too much heat is bad could pre ignite the incoming charge as well. And as for the gap the electrode needs to be closer to the arch because the less the spark has to travel under boost the less chance it will get blown out. The in coming charge is moving way faster then it would on a N/A car and if its gap too big then it will get blown out I hope this makes sense 
