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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Ngk 2 step plugs



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      11-08-2024, 01:51 AM   #1
SlowE92
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Ngk 2 step plugs

Short post, havent found much info on this. I ordered the ngk 2 step plugs (97506) for my e92 335. I have done the b58 coil conversion and am wondering if i should have gotten these or the 94201.
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      11-08-2024, 08:59 AM   #2
SlowE92
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I figured this out. 97506 is fine with the b58 coil conversion. Delete this thread if needed.
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      11-09-2024, 01:09 PM   #3
mainbearing
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Good to know about the B58 coil conversion. That is the way coils should have been designed from the start.

The N51/52 coil design is poor to begin with, subjecting the windings to excessive engine heat. Hopefully my Delphi coils will last longer after two sets of Bosch junk (factory clip-type and updated, non-clip type replacement).
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      11-10-2024, 12:25 AM   #4
SlowE92
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Quote:
Originally Posted by mainbearing View Post
Good to know about the B58 coil conversion. That is the way coils should have been designed from the start.

The N51/52 coil design is poor to begin with, subjecting the windings to excessive engine heat. Hopefully my Delphi coils will last longer after two sets of Bosch junk (factory clip-type and updated, non-clip type replacement).
I think the delphi coils are very good, i just had to upgrade my coils when buying a single turbo since the b58 are rated for up to 1000 hp.
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