Return to Denso Iridium ITV22 Spark Plug: Mazdaspeed 2.3L MZR DISI (Set of 4): (HR:7)

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0 of 0 people found the following review helpful:

Happy so far! June 29, 2014 Reviewer: J-Dog from Sydney Australia   Put these in a mostly stock '06 MS3 (stock plus intake). Granted my old plugs had 87,500km on them since last change at 100,000km, it was like a different car to drive.   Increased power, more responsive, and a bit less black smoke (fuel) out the back. Was this review helpful to you?

7 of 7 people found the following review helpful:

Neato December 25, 2009 Reviewer: Chad Sparks from Glenpool, OK United States   Put these on last night. Install was easy. Just pull tmic cover off, take out nuts off the tmic and rotate it to the side. Pull coil packs off, then plugs. I gapped mine at .30. Three off them were at that already, one was at .26. I've heard with an AP they need to be at .26 but I don't know. Lots of people say they run best at .30. Make sure you pull the boots off your coil packs and stretch out the spring inside them. Being sure to stretch them out on the ends more than the center. Make it about twice as long as it comes. This will make a big difference, allowing the spring to make contact with the plugs and will eliminate hesitation and overall give much better performance. Was this review helpful to you?

2 of 2 people found the following review helpful:

ITV22 August 20, 2009 Reviewer: Nick from NJ United States   great on stock engine, and then later on a seamless install of Cobb Accessport. Only concern is some say Cobb AP requires a .28 gap. Engine noise is greatly reduced, hard to tell when car is off or idling. Was this review helpful to you?

1 of 1 people found the following review helpful:

Major improvement June 3, 2009 Reviewer: Jeff from Saint Louis, MO United States   More power, faster acceleration, less engine noise and easy install.  These one step colder plugs will improve preformance especially in hot weather when IATs are very high.  You don't need to change the gap with these... just install and go. Was this review helpful to you?

0 of 0 people found the following review helpful:

Denso itv22 May 30, 2009 Reviewer: Boyer from Allentown, PA United States   Installed along with Cobb Accessport. had to pop off the intercooler but have had zero issues with Accessport maps. definitely a must - buy the next time your plugs need to be replaced. We at my house next day as well... Was this review helpful to you?

0 of 0 people found the following review helpful:

Denso Iridium Plugs February 23, 2009 Reviewer: Rawyzf from Blaine, MN United States   Great product, easy install, very good response! Was this review helpful to you?

0 of 0 people found the following review helpful:

Cheap upgrade November 30, 2008 Reviewer: Jeff G from Alpharetta, GA United States   I replaced my plugs at around 40k miles with these and it made a noticeable difference in responsiveness and acceleration. I recommend these if you're looking for a cheap way to improve performance. Was this review helpful to you?

2 of 6 people found the following review helpful:

how u doin spark plug September 25, 2008 Reviewer: REDD in TEXAS   SPARKITY SPARK Was this review helpful to you?