What plugs are everyone using on their boosted LD9s and how many steps cooler are they?
12.6 @ 114.6 MPH
There's so many threads on this type of @!#$ it appears no one cares enough to reply... lol.
There's going to be a ton of opinions as well but I used NGK TR6 part #4177 (1-step colder) until I started running over 15psi. Now I use NGK TR7 part #3346 (2-steps colder)... I like copper plugs.
2001 Olds Alero (LD9)
636 whp / 543 ft-lb
@turboalero
[ion wrote: C2]There's so many threads on this type of @!#$ it appears no one cares enough to reply... lol.
There's going to be a ton of opinions as well but I used NGK TR6 part #4177 (1-step colder) until I started running over 15psi. Now I use NGK TR7 part #3346 (2-steps colder)... I like copper plugs.
I have also been using the 4177's on my charger setup and they work great.
Depending on your goals the 3346's might be a good option for you.
FU Tuning
i always just ran tr6s in my car gapped at .020
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