DougK

I am new to aftermarket mods and the rotary experience. I was wondering if anybody has bought Ididium spark plugs and if they are worth the cash?

dannobre

iTrader: (3)

Stock plugs are iridium...and expensive about $40 each.......

DougK

Thanks.

army_rx8

only reason to swith is if you are runnign boost (not sure how much till you switch plugs) and you need a colder plug.

someone correct me if i am wrong.

dannobre

iTrader: (3)

The plug wires are a good mod. Mine helped smooth out the idle...and I hope they help the weak spark at high RPM's. Guess I won't know till the next dyno...to see if it smoothed out the crap up top

brillo

I replaced my plugs with the new ones and have the RB spark plug wires. I haven't noticed a huge difference in the idle vibration with the wires but the throttle response seems better. My plugs after 12K miles weren't too bad, but I figured that I should got ahead and replace them since I've been through several flashes and the initial breakin.

I need to do a dyno run to see what I'm putting down now.

zaku

Denso has specific design irdium spark plug (two model, one for normal car, the other for power tuned car) for RX8, It's said it had silicone coating for preventing flooding. I change it with autoexe plug line concurrently. The pedal response is improved, but hard to said any improvement in HP gain.

guitarjunkie28

try running bur9eqp's in the trailing ($9 each), and close your leading gap to .028-.032 in the leading (stock plugs) if you're having problems up top.

twinturbosupra94

what is considered high boost 6-8psi...i think i am going to replace them with the denso plugs.....do i need to gap them or do they come pre-gapped perfectly?