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jerimy jerimy is offline
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Posts: 42
Join Date: Aug 2018
Car: 2011 BMW 335i M sport
Default Whining sound only with Jb4 active?? - 11-19-2018, 06:49 AM

What the hell??
With Jb4 deactivated my car purrs like a kitten. But whenever I use ANY map, I get that whining sound.
with Map 1, or 5, with 3 gallons of E85 per tank it will get up and scat, but when I pull up next to that civic SI ricer that thinks hes driving a supra at a redlight, that whining is totally embarrassing.
I recently dropped 1000 dollars for a new valve cover, and it didnt fix my issue.
New coils, Plugs, CP, had all my pulleys and belts inspected at the same time. New Fuel pressure sensor. Among other things.
Got a quote for 1365 bucks to replace my rear main seal.
Is it worth the money? or should i just save the money and go ahead and ditch the 335 for an M6?
My 335 is one of the best looking in my opinion

2011 M Sport N55 coupe, BMS intake/ chargepipe, Jb4
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Contra0351 Contra0351 is offline
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Posts: 1
Join Date: Nov 2019
Car: BMW 335i E92/N55
Question 11-20-2019, 09:23 AM

Wondering if you ever got to the bottom of that whining noise? Installed the JB4 a few days ago and Iím getting the same whining noise from my N55 when Iím pulling up to a stop or driving in a parking lot. My first guess was belts?...
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