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  1. Does my intake boot need replacing?

    General E46 Forum
    Hi all, Was just looking over the engine bay (no car problems that I can tell, runs nice!) but I’ve heard cracked intake boots are common so looked at mine while I was poking about. To me it looks pretty damn cracked. But like I said, no issues. Common to look like this or is it on its way out...
  2. Complex Problem - Engine Surge Upper Gears Only

    General E46 Forum
    Hello Everyone, I have a complex problem that I would love help narrowing down. Thank you in advance to any contributors. I don't drive my e46 often and so this problem has been dragging on for some time. I love this car and want to keep enjoying it. Last January I brought the car in to the...
  3. Hesitation between 2500-3000 RPM in Upper Gears - Manual

    General E46 Forum
    I have been trying to diagnose and remedy this problem for several months, and now I need the to call on the collective knowledge of the group. It all began when SES illuminated one morning as I was on my way to dealer for routine maintenance. The car was behaving normally on the roughly one...
  4. Whistling under acceleration between 1500-2000 RPM

    General E46 Forum
    Hello everyone, I have recently been experiencing a whistling occurring somewhere between 1500-2000 RPM. It only presents its self under acceleration and whilst moving. Below or above this rev band, no sound is heard. While the car is parked and revved no sound is present. Otherwise the car...
  5. FS: Mishimoto CAI for 323i, 325i, or 328i (New)

    Engine & Performance
    Selling a new-in-box, never-installed Cold Air Intake kit for 1999-2006 BMW 323i, 325i, and 328i. My wife bought the kit as a gift not realizing it didn't fit my M3, but my loss can be your gain to the tune of about a 5hp bump and some sweet sweet inline-6 intake noise. Retail price $225, asking...
  6. Cold Air Intake 323i

    Driveline, Engine & DME Tuning
    Is the air intake on the 323i more efficient then replacing it with a 3" pipe and a high performance filter? It looks like sucking the air out of a huge box instead of a pipe seems worse or am I missing something. Will it improve my performance on a 2000? This morning the ignition cranked for...
  7. E46 330 Dinan High Flow Intake, Used SOLD

    Engine & Performance
    Used Dinan High Flow Intake for 330's E46 Comes with all hardware and filter. $200 shipped North OC, local pickup.
  8. M54B22 intake manifold swap?

    General E46 Forum
    Hey guys. New to the forum, not new to BMW's. I have a 320i Touring with the 2.2L motor. I have the opportunity to grab the full intake off of a 325ci. So I'm wondering if there are any sizes differences in the 2 manifolds and/or throttle bodies? If there are, i'm definitely not expecting...
  9. E46 330 No Downtime AFE Intake Kit with Extra Filter

    Engine & Performance
    See my other thread here for pictures and details. $270 shipped. $250 local pickup. This system (without extra filter or recharge kit, or pre-filter) retails now for $449!!! Fits E46 330's only due to the larger MAF sensor. PM me if interested or post up in this thread. I accept Paypal...
  10. E46 323 Authentic GruppeM Air Intake

    Engine & Performance
    I have a used authentic air intake for sale. Serial: 02-0106. The body is made of carbon kevlar and there are some damages to the rubber trim. All hardware is included (minus the bracket arm). I had no issues installing without the bracket arm. This will fit E46-320/323/325/328 (coupe/sedan). I...
  11. Help: Whistling and Light Idle Hunting

    General E46 Forum
    So, a while back I noticed that I was getting a certain whine/whistle from my m3's engine bay while driving. The whistle only appears when using light throttle at speed, maintaining speed, or when going downhill. The whistle generally starts around 2500rpm and gets drowned out by the engine...
  12. Afe Intake for 323 and 328

    Engine & Performance
    I have an Afe intake FS/FT. Im pretty sure that it is for a 323 or 328 because it does not fit my 02 330i properly. I am asking $150 for the intake because I am just trying to get my money back out of it. Let me know what you have. Here is the craigslist add for it. Thanks for your time ...
  13. Weird Eventuri Intake Issue

    ///M3 Forum
    A couple weeks ago, I got an Eventuri intake and finally got around to installing it yesterday afternoon. The directions are very specific about how to install the MAF housing, but there's one issue: if I install the MAF housing the way their directions say to (and the way it came shipped from...
  14. aFe Intake & Mishimoto Intake Boots

    Engine & Performance
    aFe Intake $200+ shipping (http://afepower.com/afe-power-54-10441-magnum-force-stage-1-pro-5r-cold-air-intake-system) Stock springs $80 + shipping DSC module $75 + shipping Please PM me for items.
  15. Does Valvetronic negate the effect of aftermarket cold air intakes?

    Driveline, Engine & DME Tuning
    On an engine with Valvetronic such as my N46B20, does the Valvetronic negate the effect of an aftermarket cold air intake (when compared to the stock intake setup)? For this thread, the definition of an "aftermarket cold air intake" is going to be a cold air intake system in which the pod...
  16. K&N Cone Filter Causing MAF Errors? (M52TUB25)

    General E46 Forum
    Early this summer, I fitted a K&N cone filter directly onto my MAF tube as a replacement for the airbox altogether. It sounded awesome and ran great for a while, but then I installed an electric exhaust cutout and things fell apart. In addition to a blow ignition coil (which I swear must have...
  17. Weird errors all over the place

    General E46 Forum
    My 2000 323i wagon blew a coil 2 days ago and I replaced it same-day with a BREMI coil. Worked like a charm for all of 16 hours. Yesterday afternoon, out of nowhere, my car begins to shudder, lose almost all power, and throws SES, EML, and DSC. I pulled over, turned it off, waited 30 seconds...
  18. Stock intake boot fitment causing codes?

    General E46 Forum
    Last month I replaced both intake boots (20014 325 Ci) with stock parts from the dealer. With the lower boot fitted properly and the hard plastic collar/adapter in place between the upper and lower boots, the upper boot almost doesn't fit on the MAF. It is pulling down very hard and is causing...
  19. Cold Air Intake Options for 2000 323i Touring

    General E46 Forum
    So I recently removed the factory airbox and installed a K&N cone filter. The sound is WAY better, but I'm worried that the intake is only getting hot air from the radiator. I have the M-Tech 1 front bumper, so there's a lot of scoop room down there, but the Xenon ballasts are too big to fit the...
  20. Intake installed, sucking sound

    General E46 Forum
    I just installed a k&n intake on my 330i e46. Sounds great exept the initial rev. From 500-1000 rpm there is a sucking sound. This has not happend untill intake was installed. The same sound happends shortly after shutting off the car. What is this?
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