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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Supercharger stuff (MILVs+AA+BPC)



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      09-19-2021, 04:17 PM   #1277
Seattlesquash
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Anytime, and yes 110 mm is huge… you need to be below 100 mm and you feel some significant differences!

Congrats on backing off some work, good feeling I am sure!

Cheers, and have a great Friday lads!
For sure, it does!

I saw it mentioned above that you upgraded the supercharger idler pulley. What size idler pulley and belt did you go with for the 3.4 inch pulley? Also did it reduce the noise at idle on the unit? My idler pulley is kind of loud and Im tempted to put a ceramic bearing in it or replace it to shut it up lol
That's a good question. Not sure on belt length but surely reduced from 110 version but less w 22 Rpd's idler pulley. When you say it sound is great and no annoying rattle!
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      09-22-2021, 07:55 PM   #1278
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I did it myself, easy job! 8h tops and that was going really slow. Instructions are great and I skip bringing it into fender as that fitting was stupid and definitely restrict flow… and you will see what I did in pictures previously. I recommend tuning it beyond ESS if you want big gains, but great system either way! DO IT!
Thanks for the info! This is totally the plan, cant but a 335 cause my car is perfect already, this will make it even more perfect
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      09-22-2021, 09:40 PM   #1279
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Originally Posted by Seattlesquash View Post
I did it myself, easy job! 8h tops and that was going really slow. Instructions are great and I skip bringing it into fender as that fitting was stupid and definitely restrict flow… and you will see what I did in pictures previously. I recommend tuning it beyond ESS if you want big gains, but great system either way! DO IT!
Thanks for the info! This is totally the plan, cant but a 335 cause my car is perfect already, this will make it even more perfect
You Said it! Same deal for me and love the linear feel of the online 6, and feel retained with these mods!
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      09-23-2021, 10:16 PM   #1280
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Update! It's definitely time to ditch the 3 stage manifold now. My large DISA failed/shorted out/caught on fire today in a drive thru. Still smelling the lovely smell of an electrical fire. Tons of smoke from the DISA valve even when the car is in accessory mode. Not related to the PCV heater, tried running the car with the PCV heater disconnected and still had smoke from the inner DISA.

For additional information, I installed brand new OEM DISA valves from FCP Euro at the time I installed the 3 stage manifold. It was at 55k miles. So I've been running that manifold with no issues for 3 years and 30k miles now.

N54 manifold time, I guess!

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      10-09-2021, 07:39 PM   #1281
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It's all back together with the N54 manifold in! Huge thanks to BigInBoca for all of his insight on the N54 manifold install, I copied your use of the nylon spacers and cut bolt sleeves and it worked perfectly.

But I gotta say the current charge pipe situation isn't the most beautiful thing. Basically had to use a shortened 45 degree hose bend and a hose coupler on the end of the ESS chargepipe and while it seems pretty solid, I'd be hard pressed to say it's pretty to look at. Just waiting on the tune update from StageFP and I'll be rolling again! Then I'll be off to see them on the 21st for MILVS and the 3.4 inch pulley tune.

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