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      02-26-2022, 09:17 AM   #2
iqraceworks
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Drives: 2007 335i
Join Date: Aug 2019
Location: Missouri

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From the little bit of research that I've done on this.......the B58's and Eldors put out close to the same amount of power. I have seen guys on other forums claiming they are making 700+HP with big single turbos and Eldor coils. The B58's require some wiring changes and brackets to mount them....seems like a royal pain in the butt.

That being said...I'm running the OEM Delphi coils from FCP Euro and I should be making close to 565-575hp at the tires on an E40 mix and bigger turbos at 27psi....and I have no issues with misfires.

With 100k miles on your coils......ANY new coils are going to help big time!!

If I were you...I would just order the N55 eldors from FCP with the lifetime warranty and be done with it 👍
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