Denso Iridium ITV22 spark plugs

[funksilver07]

Looking to add a set of these to my MS3. What's the gap for the MS3? Looks like they come with a .030-.032 gap out of the box. I'm on the stock tune, power mods=DP/RP, Nano SRI, TIP, Forge BPV. Will that gap be O.K. ?

 

[karl hungus]

bet the gap is fine. i have a box of itv22s waiting to be installed and if iirc, they come pre-gapped and you can't adjust them or they'll break.

 

[Mz3Hatch]

Just replaced mine on thursday .. They weren't pre-gapped at all .. One was at .045, another at .015, so i had to check and re-gap them all. Buy a gapping tool and just be extremely careful or you can break or cause damage to them. Proper gap is .028-.031. Not a hard install, biggest pain is removing the TMIC!

 

[Nliiitend1]

FYI, Cobb recommends a 0.26-0.28 gap on the ITV22 (at least when used with the AP)...

 

[TheRealDefman]

Not a hard install, biggest pain is removing the TMIC!

And that isn't very hard.....

 

[funksilver07]

FYI, Cobb recommends a 0.26-0.28 gap on the ITV22 (at least when used with the AP)...

I don't have an AP, the .030-.032 out of the box should be fine. I'll definitely make sure to check them out before they go on the car...

 

[scatt nasty]

I have the Denso ITV24's and did not gap them. They come pre gapped. I just twisted them in slowly until I hit resistance. As if I was hand tightening untill they were snug. Everything has been fine for 10k miles.

 

[Nliiitend1]

I don't have an AP, the .030-.032 out of the box should be fine. I'll definitely make sure to check them out before they go on the car...

If I remember correctly, the ITV22 plugs come pre-gapped to ~0.028...at least mine did. (dunno)

 

[Sport6]

If I remember correctly, the ITV22 plugs come pre-gapped to ~0.028...at least mine did. (dunno)

Mine came closer to the .030-.032 when I checked mine out of the box..

 

[Mz3Hatch]

And that isn't very hard.....

Correct .. Its not, just that hose clamp on the front tube is under the BPV .. When I re-installed i slid that clamp screw around to a much easier acces point!

 

[funksilver07]

Mine came @.030 out of the box. Putting them on this week when I get a minute to install them...

 

[btkrausen]

mine were @ .030 outta the box too

 

[ericrapp]

My 22s were consistent to each other but the 24s were pre gapped at about forty and yes i broke one. The FoMoCo were at about forty also. 22s FTW

 

[funksilver07]

Yea, mine are on the car and they feel great...very smooth delivery.

 

[karl hungus]

i'm getting a stutter @ low / constant throttle between 2500-3000 rpm.

cleaned my maf, sri filter, bpv, gas tank (w/ seafoam) and no joy.

think my itv-22s are causing the problem so i plan to go back to the stock fomoco's.

 

[ericrapp]

do you have the ms ca intake. I went through plugs rather quickly. I do not like iridiums for performance driving i don't think. I have the itv 22s with about 4000 on them. Have you looked at them and checked the gap again. Also when was your car manufactured?

 

[Blendercloud]

Running Stage2+SF 93 map on my MS6 with the ITV22's. I originally gapped them at .032. Had major issues with stuttering and overall power loss. I pulled them out about 120 miles later and regapped them at .028. Those issues are greatly reduced. Still very, very mildly noticeable compared to the stock plugs though. I have read elsewhere that the colder plug is going to be just a tad rougher anyway.

 

[ericrapp]

yes jack of all has a point. The idea of running the colder plug is for those who beat the snockers out their motor creating more heat which might create some knock. The car will want to pull timing if it is registering detonation so power is lost for safety sake. This plug is also for higher than stock boost for the same reason if understand the theory correctly. The plug is for more protection not a power upgrade, but i had not heard about the rougher running but i also use an .028 gap.

 

[Blendercloud]

yes jack of all has a point. The idea of running the colder plug is for those who beat the snockers out their motor creating more heat which might create some knock. The car will want to pull timing if it is registering detonation so power is lost for safety sake. This plug is also for higher than stock boost for the same reason if understand the theory correctly. The plug is for more protection not a power upgrade, but i had not heard about the rougher running but i also use an .028 gap.

I've posted a datalog from my AccessPort from a 2nd and 3rd gear WOT run last weekend. This is with the stage2+SF 93 map. I'm peaking at around 20.5psi of boost and holding 19.5psi or so. Before I changed the plugs to the ITV22's I was seeing Knock Retard in the mid-range anywhere from 1.2 to 4! Afterward, you can see for yourselves, it has all but diminished. Those very minor values are likely do to atmospheric differences and engine anomalies that the ECU is trying to compensate for. Needless to say, once I figured out that you can't gap them at the stock levels, they ran fantastic and have all but alleviated my detonation issue.

I hope this helps!

 

[ericrapp]

I hope i am not getting off track, but will the accessport graph you the timing in relation to rpms? or throttle position? Thanks.