What kind of spark plugs are you guys running out there and are you satisified with them. I'm looking to change mine out along with the wires and maybe a new ignition control module. Any help?

Rule of thumb #1 for Nissan owners.
Use NGK plugs.

NGK heat range 6
stock wires

The cap and rotor should be replaced every 30,000 miles. I replace them every 15,000 miles. Don't overlook this part, it makes a bigger difference than most people think.

NGK :)

dont go for BOSCH...

Denso Iridiums!! Thats what I got LOL whats the heat range on these I didnt know shit about plugs when I bought these my friend just told me they add 2 hp LOL

Originally posted by jacen99SE
NGK heat range 6
stock wires

The cap and rotor should be replaced every 30,000 miles. I replace them every 15,000 miles. Don't overlook this part, it makes a bigger difference than most people think.

You're not fowling the plugs with the 6 heat range? My plugs would look like charcoal after a hard run with the 6's and would even bog when left to idle for a while. SOOOO, I went out and bought a set of NGK Iridium 5's. I can do 3 dyno pulls in a row and the plugs look like the car has never been started.

Originally posted by 2000SR20
You're not fowling the plugs with the 6 heat range?

Nope. The base of the insulator is white and the area near the tip is a tan color.

I was. Maybe its because my car runs so rich at the top end. I've been meaning to get a S-AFC installed to lean it out a bit = more power.

Originally posted by 2000SR20


You're not fowling the plugs with the 6 heat range?

Well, here is some interesting info.

The owners manuals for all SR20's between 1996 and 2001 all show the following spark plug recommendations:

HOT...........................N/A
STANDARD.................PFR5B-11
COLD.........................PFR6B-11 or PFR7B-11

This could be why your fowling. ???????

Yet the '91-'94 (Don't have a '95 to look at) show the following:

HOT...........................PFR5B-11
STANDARD.................PFR6B-11
COLD.........................PFR7B-11

There was also a TSB back in the early '90's that stated you should run the '6' instead of the '5' heat range on the '91-'94 SE-R,NX due to driveability problems, etc.

Seems somewhat confusing.

"Technically" the hotter the plug the more complete it'll burn and the smoother the engine will run. NOW, for certain applications (higher than stock compression, turbo, nitrous) colder plugs would be used in order to control detonation and to literally keep the plug from melting apart.

hotter plugs can cause detonation also. If the plug does not get rid of enough heat, it can ignite the incoming air/fuel mixture. technically, anyway. I'm not saying this will happen with the 5's in our cars, though.

<edit> I guess that is what you said above, I just didn't get it the first time i read it </edit>