Spark Plug recommendation
Senior Member
Joined: Feb 2014
Posts: 357
Likes: 11
From: FRISCO TEXAS
2006 E55
I just did my plugs last weekend and I went one step colder and OMG what a difference. I have 06 55 with 80k on it. mods are mbh headers, primary cat and res delete with x pipe, 010 pump, smaller pulley, bwk, EC tune. car felt good after all that but slightly rough idle and just didn't feel mean enough for what I had. did colder plugs and bam! NGK IRIDIUM IX LFR7AIX2309. they sell them at most auto parts stores but I go mine from large online retailer for cheap.
Thread Starter
Senior Member
Joined: Aug 2015
Posts: 400
Likes: 23
2005 E55 AMG
I just did my plugs last weekend and I went one step colder and OMG what a difference. I have 06 55 with 80k on it. mods are mbh headers, primary cat and res delete with x pipe, 010 pump, smaller pulley, bwk, EC tune. car felt good after all that but slightly rough idle and just didn't feel mean enough for what I had. did colder plugs and bam! NGK IRIDIUM IX LFR7AIX2309. they sell them at most auto parts stores but I go mine from large online retailer for cheap.
Thread Starter
Senior Member
Joined: Aug 2015
Posts: 400
Likes: 23
2005 E55 AMG
Senior Member
Joined: Apr 2014
Posts: 308
Likes: 10
From: Tennessee
Two Torque Monsters...E55/Viper
Senior Member
Joined: Feb 2014
Posts: 357
Likes: 11
From: FRISCO TEXAS
2006 E55
it took me about 2.5 hours from the time I popped my hood to the time I closed it. I pulled air filters and y pipe plus wires and coil packs. as long as you have correct tools its a breeze. for me personally it was a night and day difference. also I have only sec cats and my O2 sensors were throwing codes even with bung extenders on the O2 sensors and since plug change NO CODES!!!!
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Senior Member
Joined: Feb 2014
Posts: 357
Likes: 11
From: FRISCO TEXAS
2006 E55
it took me 2.5 hours and what a night and day difference. also I have my primary cats deleted and even with O2 bung extenders I would throw the cat fault code but since plug change NO FAULT CODES and its been two weeks. car drives better and feels meaner.
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Thread Starter
Senior Member
Joined: Aug 2015
Posts: 400
Likes: 23
2005 E55 AMG
it took me about 2.5 hours from the time I popped my hood to the time I closed it. I pulled air filters and y pipe plus wires and coil packs. as long as you have correct tools its a breeze. for me personally it was a night and day difference. also I have only sec cats and my O2 sensors were throwing codes even with bung extenders on the O2 sensors and since plug change NO CODES!!!!
Thread Starter
Senior Member
Joined: Aug 2015
Posts: 400
Likes: 23
2005 E55 AMG
I read somewhere not to use that as there is a coating of some sort on the plugs already! I don't know if that's accurate or not.
