Which spark plugs do i use for...

my d15b vtec swap... but im still running my crx si intake manifold and distributor. So I would use the crx si plugs... correct?

ZFR6F-11 is the correct plug for D15B VTEC... Good luck finding them locally... I had to buy mine from www.sparkplugs.com... But they are one degree colder, or hotter (cant rem which way it goes) than the D16Z6, which is ZFR5F-11... Dont think the intake manifold has anything to do with it... But maybe the distributor does... Im not sure...

Well, the car is not running properly with the stock d15b vtec plugs tha are in there now, so I'm assuming i should use the si ones? any one else?

Swap them out for your old ones... See if that works... But I doubt it... Its probably a wiring problem... Also check and see what plugs are in there... Mine where correct, but I replaced them anyways... But being a used engine, they may not even be the correct plugs...

sorta off topic..but what plugs would be good for my dohc zc?

The correct plugs are ZFR6J-11. I should of looked at my cam cover instead of following what I read on the internet. Now, my check engine light comes on anytime I want to take it easy on my car. ZFR6F-11 will have you running too lean.ZFR6F-11 is the correct plug for D15B VTEC... Good luck finding them locally... I had to buy mine from www.sparkplugs.com... But they are one degree colder, or hotter (cant rem which way it goes) than the D16Z6, which is ZFR5F-11... Dont think the intake manifold has anything to do with it... But maybe the distributor does... Im not sure...

I would hope by now he has this figured out.