Looking for up-to-date feedback on these plugs? Do they improve performance?

 

i don't think we're going to see a 5HP gain with the plugs if that's what you're asking. i spent the money because i figure it's a good plug.

 

Not sure if the plugs themselves improved the performance but the fact that they're in tight now couldn't hurt

I'd advise all to check torque of plugs to 13 lb-ft.
My number 2 and 3 plugs were barely more than finger tight and #1 one wasn't much better!!!!!!!!!!!! Strange that #4 seemed correct though.
Only thing more disturbing than finding the two loose plugs is the fact that there was so much difference between the tightest and the loosest. Honda must be using QUALITY torque wrenches

I remember someone else on the board, recently, with a break down due to loose plugs where Honda said no way it came from the factory that way. Yeah, well I beg to differ !

My car seems smoother now but it's probably just the placebo effect after finding the loose a$$ plugs.

 

yeah, that's one of the joys of working on my own car: i know all the bolts i put in are properly torqued.

 

I dynoed after the plugs and they did show a marginal gain across the board. However, they are worth the money because the car idles better and it seemed to smooth the VTEC transition a little. After the plugs, the dyno showed a much smoother curve in the lobe change.

 

Where can I get these?

 

http://www.densoiridium.com

go to the online shopping and choose IK22