Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Results 1 to 9 of 9

    Thread: OBX ITB's..... Help.

    1. Member simon-says's Avatar
      Join Date
      Oct 20th, 2007
      Location
      Portland,Oregon
      Posts
      1,975
      Vehicles
      1978 Miami Blue 16v Rabbit on side drafts, 1980 Jetta Coupe,1988 Vanagon Wolfs., 2003 TDI Golf, and,
      08-14-2012 11:50 PM #1
      I'll make this short and sweet.

      I have idleing problems with these ITB's.
      2500rpm's fully closed.

      Megasquirt 3
      9A block
      X-Flow head
      11.5:1 comp.
      278 cam
      1mm oversized valves
      JE FSR pistons
      Any help would be appreciated. Thanks.





      VW&AUDI Performance Maintenance Repair.
      http://doublejmotorwerks.com/
      Northwest Premiere UnitedMotorsport Software Dealer
      APR Dealer. TDTuning Dealer. VAG-COM.

    2. Member SirSpectre's Avatar
      Join Date
      Mar 20th, 2011
      Location
      Milwaukee, WI
      Posts
      1,091
      Vehicles
      2000 Cabrio 2.0 \ 2013 FRS
      08-15-2012 08:04 PM #2
      You'd get a better response in the SEM, ITB/ Carb forum. BUT Yes. You will have idle problems with ITBs. Its just the way it is. ITBs are SSSSSUUUUPPPPPERRRR hard to get to idle well.

      Which tuning method are you using? Alpha-N or MAP? At any rate, try running it a little rich at idle. Warm it up and see if it gets better when not cold.

    3. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      08-15-2012 08:48 PM #3
      278 cam? Do you mean 288? Or 298?
      ITB's are a PITA to tune. I'd look into your software if you can. Maybe have an expert take a look, maybe they can fix it?

    4. Member simon-says's Avatar
      Join Date
      Oct 20th, 2007
      Location
      Portland,Oregon
      Posts
      1,975
      Vehicles
      1978 Miami Blue 16v Rabbit on side drafts, 1980 Jetta Coupe,1988 Vanagon Wolfs., 2003 TDI Golf, and,
      08-16-2012 12:22 AM #4
      Quote Originally Posted by SirSpectre View Post
      You'd get a better response in the SEM, ITB/ Carb forum. BUT Yes. You will have idle problems with ITBs. Its just the way it is. ITBs are SSSSSUUUUPPPPPERRRR hard to get to idle well.

      Which tuning method are you using? Alpha-N or MAP? At any rate, try running it a little rich at idle. Warm it up and see if it gets better when not cold.
      I'm running the MS3X full seq. I am running the blend ITB setting. Today I went back and re did the tb settings and got it to idle a little lower.(1350rpms from 2700rpms). I am running it a little more richer to help it from getting soo hot so quickly.
      Thanks for the reply.

      Quote Originally Posted by Hurt View Post
      278 cam? Do you mean 288? Or 298?
      ITB's are a PITA to tune. I'd look into your software if you can. Maybe have an expert take a look, maybe they can fix it?
      Yes the cam is a TT276* sorry had to remember. The software is definitely the next move.
      Thanks for your reply as well.
      VW&AUDI Performance Maintenance Repair.
      http://doublejmotorwerks.com/
      Northwest Premiere UnitedMotorsport Software Dealer
      APR Dealer. TDTuning Dealer. VAG-COM.

    5. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      08-16-2012 07:42 PM #5
      Quote Originally Posted by simon-says View Post
      I'm running the MS3X full seq. I am running the blend ITB setting. Today I went back and re did the tb settings and got it to idle a little lower.(1350rpms from 2700rpms). I am running it a little more richer to help it from getting soo hot so quickly.
      Thanks for the reply.

      Yes the cam is a TT276* sorry had to remember. The software is definitely the next move.
      Thanks for your reply as well.
      If this car isn't driven daily, go with a 288* or even a 298*. You won't regret it!

      No problem, I'm always willing to put my $0.02 in!

    6. 08-18-2012 03:18 AM #6
      lower it!!!!!

    7. Member simon-says's Avatar
      Join Date
      Oct 20th, 2007
      Location
      Portland,Oregon
      Posts
      1,975
      Vehicles
      1978 Miami Blue 16v Rabbit on side drafts, 1980 Jetta Coupe,1988 Vanagon Wolfs., 2003 TDI Golf, and,
      08-20-2012 11:05 PM #7
      Okay so,

      I have done about 3hrs. of research and a friend has also helped out. And we came up with this.


      DOW CORNING MOLYKOTE 321.



      This is used by FORD and Mitsubishi on their throttle bodies. They say to never clean them! If you do clean them, then you need to reapply this stuff to the butterfly/bore. Let it dry and crack open the butterfly, adjust your idle stop screw. Enjoy your low idle setting.

      I will install the manifold in the morning along with the new phenolic spacer. (helps keep the fuel rail cool) I bet with the stop screw out all the way, it wont start. Screw in the stop screw until it idles.

      :beer
      VW&AUDI Performance Maintenance Repair.
      http://doublejmotorwerks.com/
      Northwest Premiere UnitedMotorsport Software Dealer
      APR Dealer. TDTuning Dealer. VAG-COM.

    8. 08-20-2012 11:35 PM #8
      did you lower it, cause you should

    9. Member
      Join Date
      Oct 4th, 2002
      Location
      Belgium, Europe
      Posts
      674
      09-13-2012 02:13 PM #9
      mine leaked everywhere.. everywhere..

      removed the butterflies and welded everyhole shut, using 1 big TB
      Secretary / co-founder - Corrado Club Belgium

      http://www.corrado-database.nl/index...corrado&id=855

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •