NGK's advice for MSP
- Thread starter BOOSTR
- Start date
03BlkMicaSPD
Quality Literature...
- :
- 2003 MazdaSpeed
I will tell you that with the copper plugs, I get alot of fouling, at the track it almost stalled when I hit 2nd gear. when I was done running the idle would drop then come back up, drop then..... So I replaced my plugs and they were completely black, but not worn, and after I replaced my plugs it ran like a new car untill they fouled
, I would hope that Iridium would help prevent fouling.
, I would hope that Iridium would help prevent fouling.03BlkMicaSPD
Quality Literature...
- :
- 2003 MazdaSpeed
Also, some of the hard starting is caused by the fouling of the plugs that our insanely rich cars causes. Put new plugs in it and notice how it fires up instantly.
- :
- 2015 BMW 335i Sedan / 2015 Nissan Pathfinder Platinum 4WD
Yeah..I've read that the copper ones probably should be changed every 3 oil changes or so...guess it depends
MSPDAVE125
Member
No plug fouling with the iridiums for me. Gapped to .030 and very clean after 6 months
Glowmunkey
Member
I'd worry about Iridiums acting as a hot-spot in the combustion chamber... Personally I'd rather run the risk of fouling copper plugs... sure, iridium and platinum may last longer, but platinum can create pre-ignition, iridium may as well. Obviously iridium won't be able to transfer heat as well as copper, that's just basic metalurgy...
And why would you take NGK's word for it? They're in the business to sell a product, what they say should be taken with a grain of salt. They're a good company, but I personally wouldn't use anything but copper plugs while running more than stock boost.
Just my $0.02
And why would you take NGK's word for it? They're in the business to sell a product, what they say should be taken with a grain of salt. They're a good company, but I personally wouldn't use anything but copper plugs while running more than stock boost.
Just my $0.02
- :
- 2003.5 Titanium Gray MSP #1699
I got rough idle when I installed my BKR7Es...I think I'll be switching to the BKR7EIX. Thanks for the info! (thumb)
- :
- 2015 BMW 335i Sedan / 2015 Nissan Pathfinder Platinum 4WD
I just pulled out my ngk coppers and put in the Denso iridium...
Haven't noticed any negative changes yet..seems smooth, etc.
I'm hoping they'll get a better burn, and maybe fix the pinging I get at higher rmp's...They're a little more expensive, but they should last longer...
Haven't noticed any negative changes yet..seems smooth, etc.
I'm hoping they'll get a better burn, and maybe fix the pinging I get at higher rmp's...They're a little more expensive, but they should last longer...
- :
- 2003.5 Titanium Gray MSP #1699
speedfrk said:
Gapped to .32 (the # I got from researching on here) & I checked the install several times. Only had them in for about 400 miles before I got sick of the idle & put the stock plugs back.
Glowmunkey
Member
unwrittenLaw said:
They should actually make pinging worse... greater chance at pre-ignition...
R
robsir00
I used the iridiums in My old 2000 Civic sir and found that the pinging at high rpm when using 89 octane gas in the winter went away . With 93 octane in the summer I found that alot less fumes were coming out of the exhaust with the iridiums buring the fuel more efficiantly . Theses are what im installing in my speed when I do my first oil change. Just my 2 cents.
Glowmunkey said:
- :
- 2015 BMW 335i Sedan / 2015 Nissan Pathfinder Platinum 4WD
servoeyes said:
this is why i'm trying them out
so far so good...no pinging.....when i pulled the ngk coppers out they were fairly black....
Stormtrooper77
Member
- :
- 2003.5 Mazdaspeed Protege
IK22 (Denso)
ps. Good luck finding any of these plugs here. I asked if they can be specially ordered and their responses were "they don't even come up with a part number on file, how can we order them?"
ps. Good luck finding any of these plugs here. I asked if they can be specially ordered and their responses were "they don't even come up with a part number on file, how can we order them?"
