maximadan96

i had a stock 3.48 pulley good for 5-6psi of boost and now im going down to a 3.33 pulley 9-11 psi my friend with a camaro said i should go down 2 plugs colder so enige wont detinate? i dont know if i should go down 1 spark plug colder or 2?

Sonic

One. And stop ignoring the other org members on the Pike.

wicked1044

hmmmmm, playing with the pulley huh? :

wicked1044

do you know how to check your plugs to see if there fine?/ i'd say you should change them to colder plugs...

MardiGrasMax

iTrader: (14)

As long as its just the edge. if the "purplr " goes farther than 2/3 down the ground strap to the threads your getting too lean.

Silver specs are also not good on the white ceramic part.

With your set up I would also compare the plugs to be sure your fuel and nitrous distribution is fairly even. The plugs should look similar for all cylinders. If their is a big difference between some of the plugs I'd back off the shot size or go pro fogger (nozzle per cylinder), or get a set of rings ready to go in the motor in a short time.

Remember the only way to properly read spark plugs while using nitrous is to make a full nitrous run to 100mph or so and cut the car off and coast to a stop, then read tha plugs. If you let it run with out the nitrous for even a small amount of time after the nitrous use the plugs are not a representation of the nitrous's effect on the motor.

mtrai760

iTrader: (19)

If you don't shut off the car and check the plugs immediatly after running NOS, you will not be able to tell if you are running lean or detonating!

MardiGrasMax

iTrader: (14)

In that case I'd go and purchase the piston rings.

APEXi EGT Gauge it the best