Hey was up everyone. i would like to know what would be the best spark plugs i can use for my new mods i just added to my car and what should i gap them to. Im running the ngk br7es plugs. please let me asap, bc my service light is on saying random missfires


Mods: Evo 8 16G with 10.5 hotside/ Kelford 272 cams/ Beehive springs/ ported: head, intake manifold, TB, Ebay O2 Housing/ Pte 880cc/ Excedy S2 HD clutch/ Buschur 3' Intercooler/ Injen icp/ 3' full exhaust system with test pipe/ APS twin vent bov.

 

NGK BR7ES or BPR7ES gaped to .026

 

ok then. what about the misfires, bc i notice that when in 5th gear crusing at 50 mph, everytime i stepped on the gas, im hearing a rattling can sound. should i changed them to iridiums or not really?

 

I would say 7's also, but depending on boost level , you can use the 8's.

Also with the kelfords, I hope you got a tune to take care of idle and misfire codes.

 

My car prefers coppers

 

im running 20psi for the boost and i did get a tune take care of the idle.

 

what to gap them at?

 

.026

 

what about the iridiums?

 

same

 

hey 4retech, im running 20 psi on boost

 

are the iridiums safe to use on my car, bc alot of ppl told me not to use them.

 

8s are recommended for much higher hp...so use 7s unless you drive a beast...gap is .024_.027

 

Yes Irridiums are safe man Evos come stock with Irridium plugs from the factory.

You just have to be careful gapping them not to damage the tips.

 

I would say .026 to .030 depending on ignition system.