Let`s Talk About Spark Plugs.... - BMW Forum

antose9 · 05-16-2005, 01:37 PM

Hiya all,
so, after first week of joy driving my 540, time for tune up. I`d like to go for Denso Platinum, any other ideas?
What spartk plygs do you guys use, and why? Wanna get nothing but the best for my BM

superdeadman · 05-16-2005, 02:36 PM

get bosch platinum with 4 metal thingies (hehe i'm not a tech man)
that's what comes stock on your bmw (at least my 528i) Expect to pay like 6 bucks/spark but i guess it's worth it.

billB · 05-16-2005, 05:36 PM

Whatever is dealer recommended so I get them from the dealer...worth the extra buck!!!

GoRan008 · 05-16-2005, 06:16 PM

I would go with the OEM spark plugs. I changed mine not too long ago and everyone that I asked said to go with OEM. And if I recall, they were bit cheaper than Bosch Plat 4.

G

billB · 05-16-2005, 06:17 PM

Quote:

Originally posted by GoRan008@May 16 2005, 06:16 PM
I would go with the OEM spark plugs. I changed mine not too long ago and everyone that I asked said to go with OEM. And if I recall, they were bit cheaper than Bosch Plat 4.

G

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THIS is very true....

antose9 · 05-16-2005, 11:07 PM

I got Autolite Double latinum, 2.99/each - I eas told by couple poeople, that they are way better than Bosch, and cheaper, too.... I went for cold ones, anyone used Autolite plugs?

BEX · 05-17-2005, 07:15 PM

Quote:

Originally posted by antose9@May 16 2005, 10:07 PM
I got Autolite Double latinum, 2.99/each - I eas told by couple poeople, that they are way better than Bosch, and cheaper, too.... I went for cold ones, anyone used Autolite plugs?

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OEM always provides better power, economy for me. I would stay away from autolite though and try a BOSCH plug instead. Just my .02cents

antose9 · 05-17-2005, 07:21 PM

What`s wrong with Autolite? Has anyone had some bad experience with them?
A9

dedahed · 05-18-2005, 04:57 PM

I used NGK Laser Platinum with 'the four thingies'... no apparent issues.

rb26 · 05-18-2005, 05:18 PM

I used the Bosch plugs with the four "thingies", through a dyno run at my buddies shop, they actually gave a .3 hp gain.

rb26 · 05-18-2005, 05:20 PM

I used the Bosch plugs with the four "thingies", through a dyno run at my buddies shop, they actually gave a .3 hp gain.

Dustin540-6 · 05-18-2005, 06:49 PM

Denso Iridium is the way to go. They cost about $10/plug, but you will notice a difference in performance and efficiency.

///M Power · 05-18-2005, 08:18 PM

I have bosch platinum +4. $36 spent.....and i dont notice a difference. It's just a peace of mind issue I had to do s I dumped a lil extra cash into it. I doubt it makes a difference and copper may be better.

tstolber · 05-22-2005, 09:22 AM

I have used bosche super 4's and Splitfires on other cars and the splitfires made a noticeable difference even over good standard plugs on an Escort XR3I.

One thing I would say about BMW aftermarket parts is that they are rarely as good as the standard kit.
I read a review on air filters which was a report on quite a scientific test of all the filters available for E34s. I believe it was on a 525. The standard BMW filter flowed just slighly more than a K&N pannel filter but the K&N filter let it 5 times more dirt and grit into the engine than the standard filter. This was observed in the engine oil. So I guess this would drasticaly reduce the life of the engine.

From experience pannel filters make virtualy no difference, induction kits do but I think its best to leave it alone unless you are gonna do a full on proper job!