Looking for some recommendations what plugs I should run, Currently running ctsc stock boost but come spring bumping it with a 3" pulley so should bring me up to around 11-12lbs thinking I should be running cooler plugs... Thanks for any advice

 

i'm running 9's because i'm running about 15lbs or so on pump gas stock compression

 

8's

 

The NGK stocking number 2668 is a good one, most of us use these. They are heat range 8 which is one step colder then stock, this is what you need now and should be fine for 13-15psi

 

I think I have the 7173's that are also an 8 heat range. Does anyone know if they are as good as the 2668's that was mentioned?

 

You want BKR8EIX (#2668)

 

Oh, those are the plugs I used to run. Good plugs but spendy.

 

So I should be running cooler plugs even at the stock boost is what your saying right? Not to be a newb but what are the benifits or why do you do this in a fi setup

 

Just use some NGK coppers R5671A-X is your best bet replace X with whatever heat range you want, I run 10's but you should probably run 8's

Colder plugs transfer more heat to avoid pre-ignition from a glowing plug. Iridiums are a rip off and don't work as well as copper plugs.

 

Colder plugs reduce the chance of pre ignition, it is recommended to move to the next colder heat range on the stock CT boost level, as your boost level goes up you may consider going to 9's, however if you go to cold of a plug you can get incomplete burning and develop more deposits resulting in poorer everyday running efficiency, some guys running at higher levels make this compromise.

Copper plugs are cheaper but are non resister, which is not recommended for our car which uses OEM resister type plugs, some have experienced electrical interference issues with copper plugs which is why some choose to steer away from these. I tried them, car seemed to run fine but I had issues with my radar detector, erratic false alarm behavior so I went with the more expensive alternative which is the 2668. You can do a search on copper plugs and learn a bit more on the kinds of issues people were having with them, and then there are always the exceptions which have experienced no issues with those plugs. They are cheap enough to warrent trying for yourself. I dont believe any permanents damage has been cuased from these but again do a search and see what your own impressions are first.