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    Thread: He wanted more.....NLS road racer round 2. stage ITB's!

    1. Member M3NTAL Kev's Avatar
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      04-28-2012 12:38 AM #26
      Wow. I'm very interested in the ITBs as well... I really miss my e30 M3.

      Once you're done, can you share more detailed info?

    2. Senior Member skidplate's Avatar
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      04-28-2012 01:10 AM #27
      I can't wait to hear the noises that thing makes.
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      I remember when people modified their Volkswagen to enhance the driving experience. What ever happened to Fahrvergnugen? Bags are for kids that grew up watching Pimp My Ride. Turbo is for all of us that enjoy actual motorsport.

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      04-28-2012 05:32 PM #28
      Quote Originally Posted by jaja123 View Post
      Id imagine the engine would not last nearly as long with itb. It seems like more of a track car so I guess its fine.
      Why?
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    4. Senior Member skidplate's Avatar
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      04-28-2012 05:48 PM #29
      Quote Originally Posted by jaja123 View Post
      Id imagine the engine would not last nearly as long with itb. It seems like more of a track car so I guess its fine.
      They would have little to no affect on the engine's longevity.
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      Quote Originally Posted by Mr. Knappy View Post
      We really need breeding standards like they have with dogs.
      Quote Originally Posted by pete@blackforest View Post
      I remember when people modified their Volkswagen to enhance the driving experience. What ever happened to Fahrvergnugen? Bags are for kids that grew up watching Pimp My Ride. Turbo is for all of us that enjoy actual motorsport.

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      04-28-2012 07:41 PM #30
      itb usually have no air filters correct? so its sucking in unfiltered air. Im not against it though its exciting to see this on a 2.5.
      5 cylinder FTW

    6. Member thygreyt's Avatar
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      04-28-2012 07:43 PM #31
      Quote Originally Posted by jaja123 View Post
      itb usually have no air filters correct? so its sucking in unfiltered air. Im not against it though its exciting to see this on a 2.5.
      they will prolly have some sort of mount for a common filter...

      prolly a filter for the dd and a trumpet for the race days.

    7. 04-28-2012 08:08 PM #32
      Ive also seen them with filters on each of the trumpets.

    8. Member thygreyt's Avatar
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      04-28-2012 08:17 PM #33
      Quote Originally Posted by DerekH View Post
      Ive also seen them with filters on each of the trumpets.
      filters would have to be small... cause it doesnt look like a lot of clearance.


    9. 04-28-2012 08:38 PM #34


      Its doable

    10. Member thygreyt's Avatar
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      04-28-2012 08:40 PM #35
      i have seen a lot of the option 1... First time seeing such small filters.

    11. Member mldouthi's Avatar
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      04-28-2012 09:16 PM #36
      Quote Originally Posted by thygreyt View Post
      i have seen a lot of the option 1... First time seeing such small filters.
      Those look like motorcycle filters.

    12. Member M3NTAL Kev's Avatar
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      04-29-2012 08:48 AM #37
      Quote Originally Posted by DerekH View Post


      Its doable
      It's might be a good idea to move the filtration further away from the air horns by using an airbox to smooth out the flow and reduce turbulence at the air horn opening. Years ago a bunch of us noticed this while tuning our e30 M3s on the DTM CF airboxes.

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      04-30-2012 08:29 AM #38
      may have a plenum like a true race car has.

      example

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    14. Member thygreyt's Avatar
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      04-30-2012 08:37 AM #39
      Quote Originally Posted by nothing-leaves-stock View Post
      may have a plenum like a true race car has.

      example

      wouldnt that hinder performance...? i mean, usually on plenums with side entrances, cylinder one gets lean (too much air in) and cylinder 5(in our case) gets rich (too little air)

      with individual filters, then all of them get the right ammount of air. Unless of course that the plenum was for the dd...

      anyways, just wondering.

    15. Member M3NTAL Kev's Avatar
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      04-30-2012 09:51 AM #40
      Quote Originally Posted by thygreyt View Post
      wouldnt that hinder performance...? i mean, usually on plenums with side entrances, cylinder one gets lean (too much air in) and cylinder 5(in our case) gets rich (too little air)

      with individual filters, then all of them get the right ammount of air. Unless of course that the plenum was for the dd...

      anyways, just wondering.
      It depends on the shape of the airbox and volume of the plenum. You have to consider the flow of air into each trumpet. Having filtration that close to the trumpets may slow down flow and create turbulence - though it will sound fantastic. Keep in mind every modern race car with ITBs that you see runs some form of airbox.

      BTW, that airbox looks really nice. TWM has some great components, but I don't see anything for the 5cyl. yet - the roller throttles, if modular would be great.
      Last edited by M3NTAL Kev; 04-30-2012 at 10:02 AM.

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      04-30-2012 09:56 AM #41
      that was an example....
      MOST true race motors have them. and it won't hurt.
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    17. 04-30-2012 11:18 AM #42
      sooooooooo exciting!

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      05-01-2012 09:14 AM #43
      Nice work Josh, I am jelly of the ITB's.

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      05-01-2012 03:46 PM #44
      Quote Originally Posted by VikingVR6GTI View Post
      Yep, that was my first thought too. A nice set does not automatically make a chick attractive. Especially when that "chick" is a dude.

    20. Member nunumkv's Avatar
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      05-02-2012 11:24 AM #45
      Sell me ITBs?

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      05-03-2012 03:15 PM #46
      Quote Originally Posted by jaja123 View Post
      Id imagine the engine would not last nearly as long with itb. It seems like more of a track car so I guess its fine.
      Incorrect. Here's what an M63 engine looks like with the cover off. 8 cylinders, 8 throttle bodies, 8 nasty looking runners.

      My neighbor has 202,000 miles on his '01 M5 without any problems, if you don't count a lot of tires worn to the cords.


    22. 05-03-2012 03:21 PM #47
      Quote Originally Posted by brian81 View Post
      Incorrect. Here's what an M63 engine looks like with the cover off. 8 cylinders, 8 throttle bodies, 8 nasty looking runners.

      My neighbor has 202,000 miles on his '01 M5 without any problems, if you don't count a lot of tires worn to the cords.



    23. Member GTACanuck's Avatar
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      05-03-2012 03:39 PM #48
      Quote Originally Posted by Danny@C2Motorsports View Post
      X1000000

    24. Member tay272's Avatar
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      05-03-2012 03:52 PM #49
      Whattt thats freakin crazy man, had no ideas those engines were like that.
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    25. Member M3NTAL Kev's Avatar
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      05-03-2012 08:40 PM #50
      Quote Originally Posted by tay272 View Post
      Whattt thats freakin crazy man, had no ideas those engines were like that.
      All of the M cars have had ITBs with the exception of the US Spec. e36 M3 and the recent 1 series M.

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