» Site Navigation | | » Recent Threads | 1999 M3 Swap 09-07-2023 10:10 PM 05-02-2024 08:18 PM 6 Replies, 330,000 Views | | | | | | | 05-23-2012, 02:25 PM | #1 | Junior Member Join Date: May 2010 Location: canada Posts: 16 | Which spark plugs u uesd Bosch or NGK I replaced my spark plugs with BKR6EIX NGK, the first few days seems no bad, but later on not any improvement than old ones How about yours | | | 05-29-2012, 02:17 PM | #2 | Junior Member Join Date: Apr 2012 Location: Surrey, BC Posts: 7 | I was running stock NGK, but switched to Bosch Iridiums and noticed improved idle, and off idle acceleration. | | | 05-29-2012, 02:29 PM | #3 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | Autolite #3922 (Boosted) #3923 (NA stock) | | | 05-29-2012, 05:01 PM | #4 | Senior Member Join Date: Dec 2010 Location: Wichita Falls, Texas Posts: 1,364 | Bosch copper core oem plug...experienced BMW mechanics will tell you not to waste your money on fancy, expensive plugs in these cars. They run the best on basic plugs. | | | 05-29-2012, 10:03 PM | #5 | Junior Member Join Date: May 2010 Location: canada Posts: 16 | Bosch FGR7DQP? Not cheap, expensive than ngk. Autolite good enough? I found some m44 engines use ngk oem plugs, they have BMW label on them, but no part number. | | | 05-30-2012, 03:53 AM | #6 | Member Join Date: Apr 2012 Location: SoCal Posts: 49 | I ran out of options at the local stores for the correct NGK so wound up with Bosch platinum 4 prong deals from Napa. They were the only store of 4 that had anything they could pull off the shelf. Anyway, the 4 prong platinums seem to be working well after 1k miles. The car had some misfire codes and those have disappeared since, related to the old worn NGK's I assume. | | | 05-30-2012, 05:24 AM | #7 | Junior Member Join Date: Apr 2012 Location: Surrey, BC Posts: 7 | People who preach that copper is the end all and be all, obviously have never used iridium plugs | | | 05-31-2012, 01:39 AM | #8 | Senior Member Join Date: Dec 2010 Location: Wichita Falls, Texas Posts: 1,364 | Quote: Originally Posted by TG Goose People who preach that copper is the end all and be all, obviously have never used iridium plugs | No I haven't. My information comes from Mike Miller, an indie BMW mechanic in Pennsylvania who writes a monthly tech Q and A column for Bimmer Magazine. | | | 05-31-2012, 04:18 AM | #9 | Junior Member Join Date: May 2010 Location: canada Posts: 16 | Quote: Originally Posted by TG Goose People who preach that copper is the end all and be all, obviously have never used iridium plugs | i use the ngk iridium plugs, but didnt feel any difference. | | | 06-11-2012, 08:14 AM | #10 | Junior Member Join Date: Jun 2012 Location: Invercargill, New Zealand Posts: 8 | How much would a set of new Bosch spark plugs cost roughly?? i wouldn't mind going over my Ti and replacing a few things here and there to make sure it's running smooth | | | 06-11-2012, 01:12 PM | #11 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | Quote: Originally Posted by TG Goose People who preach that copper is the end all and be all, obviously have never used iridium plugs | Copper conducts electricity very well for cheep. There is no HP gain by installing expensive plugs. If you index your plugs on some engines you can gain some HP but not the M4x | | | 06-11-2012, 11:29 PM | #12 | Junior Member Join Date: May 2010 Location: canada Posts: 16 | Quote: Originally Posted by arun318Ti How much would a set of new Bosch spark plugs cost roughly?? i wouldn't mind going over my Ti and replacing a few things here and there to make sure it's running smooth | CAD$20 to CAD$40 | | | 06-13-2012, 04:57 AM | #13 | Senior Member Join Date: Feb 2007 Location: Fl Posts: 1,353 | NGK BKR6EQUP's on any M42 or M44 that's normally aspirated. These are factory high power plugs and they work much better than any BOSCH plug I have tried on the M42 or M44. __________________ SUPPORT 318ti.org! CLICK THE LINK ABOVE! Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! www.BimmerBum.com ALL NEW! 318ti Specific Parts For Sale www.facebook.com/BimmerBum BMWCCA #132203 95 318ti Club Sport 98 318ti Active S50 Swap | | | 07-11-2013, 12:50 PM | #14 | Junior Member Join Date: Jan 2013 Location: Holland, MI Posts: 9 | I know this thread is a year old, but let me add a bump for NGK BKR6EQUP. Just replaced Bosch Iridiums with the NGK and actually noticed a significant improvement in smoothness and power. Got mine at Advanced Auto for $7 a piece. | | | 07-12-2013, 03:27 AM | #15 | Senior Member Join Date: Mar 2005 Location: Portland Or Posts: 2,666 | Tried the Iridiums in a Jeep, 318ti 330xi.. They only lasted about 12K in the jeep. Same with the 318.. Pissed off the 330 took them out within a week. Dave __________________ Dave - PDX 1995 318ti - Active Black and Tan. 2005 330xi - Mtech 1 - 6spd - Orient Blue/Black | | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |