Aftermarket Turbo Controller for m_TDI's - page 2 - TDI Engine -General Info - VWDiesel.net The IDI, TDI, and mTDI source.

• #15 by ventil on 03 Feb, 2008 14:02
• Quote from: "Tintin"

  And how you set the desired boost?  example: 18PSI...  you have a boost spike?

  
  You can set the boost with RV2 trim. If You don't need full boost on low rpm You can set initial low output voltage with RV1 trim. If You want to opposite, You can set RV1 to minimum and connect diode (diodes in rows) between A abd B points on K8004. Boost spike is about 0,5 sec - when I have adjusted 1,3 bar boost - for 0,5 sec I have 1,5. I think is not to much but of course You can to reduce this witch RV1 trim.
  

  Quote from: "lbreton"

  I think this circuit could be taken further by splicing a pot (TPS) into the feed to the dcin to modifiy the boost level relative to the throttle position.

  Yes, of course, You are right.
   bar
• #16 by lbreton on 03 Feb, 2008 14:57
• Quote from: "ventil"

  You can set the boost with RV2 trim. If You don't need full boost on low rpm You can set initial low output voltage with RV1 trim. If You want to opposite, You can set RV1 to minimum and connect diode (diodes in rows) between A abd B points on K8004. Boost spike is about 0,5 sec - when I have adjusted 1,3 bar boost - for 0,5 sec I have 1,5. I think is not to much but of course You can to reduce this witch RV1 trim.
  

  
  
  Thanks Ventil, your control system is a gem.
• #17 by ventil on 03 Feb, 2008 21:51
• I made it for my m-TDI with VNT GT2052 - but everyone, who wants VNT turbo can do this - it's really simple and works well.
• #18 by ahto42 on 22 Sep, 2008 12:22
• Can i use TPS insdead of mpx4250?
• #19 by ahto42 on 29 Sep, 2008 00:38
• And how is the Cruise mode solution?
• #20 by ahto42 on 05 Oct, 2008 04:36
• Quote from: "ahto42"

  Can i use TPS insdead of mpx4250?

  
   :?:
• #21 by aidan on 29 Oct, 2008 12:15
• Anyone who knows much about electronics, how much would it cost to make Ventil's system above?
• #22 by ahto42 on 31 Oct, 2008 13:15
• ca 20$ for k8004, 8$ for big resistors an 'd condensers, 35 $ for used N75 valve, 2$ for scrapyard N75 connector wire.
  im planing to use TPS insdead of pressure sensor
• #23 by T3-mtdi on 07 Jan, 2009 14:54
• I want to built a Vnt controller too. Is this the complete List?:
  
  Voltage Regulator 7805 5V 1A
  Voltage Regulator 7512 12V 6A <- I cant find
  K8004
  4 Resistors 10 Ohm 15 - 25 W <- I can choose between 11 W and 25 W.
  MPX4250 <- I find only MPX 4250DP i think there i no difference
  diodes 1N4148
  condensors:
  1µF 10V <-
  0.01 µF    <-which voltage
  470pF     <-is it realypico Farrad which voltage
  4x 0.1 µF       <-which voltage
  sorry. perhaps these questions seem stupid to many people but im more the mechanic than the electrician!
  Are there any new ideas? Easier ways?
• #24 by Sprockets on 08 Jan, 2009 04:46
• Thought I'd post in here, and pimp the controller I'm building over in the IDI section.  If you're not familiar with it, worth a read as it will be FULLY featured, and hoping for a price of around 120-150GBP.  The schematics (all be it the early design) are over there to  Source code is still in production, so as of yet, nothings available.
  
  To help out T3-mtdi,
  
  the voltage reg @ 6A is a) hard to get and b) expensive.  From a quick look, you should be able to get by with a 5 amp version (which at 12V is a fair bit of juice....)  to get all the parts, just search through digikeys website.  The 5A 12V reg from Nat Semi will do the job, I think part number LM2588S-12-ND, but I haven't looked to far into the schematics to be 100% sure on current draw, if you can't get that, could always run 2 in parallel, then you'd have 10A capability
  
  As for the resistors, go for 25w, as means they can handle more power.  Just means they are generally bigger and more expensive.
  
  The MPX4250-DP is a DIFFERENTIAL pressure sensor, not an ABSOLUTE pressure device.  Google the difference
  
  Yes, the value really can mean pico farad  And the voltage has to be over the maximum it will normally see.  For most stuff, it is 16V rated, but not sure on his flyback design (if any) from the N75, which can see high voltage spikes.
  
  Hope this is of some help.
  
  -Gavin
• #25 by ahto42 on 10 Jan, 2009 06:16
• TPS?
• #26 by oldskool rich on 10 Jan, 2009 16:51
• wow, that jeep is bad ass, one of the best things ive ever seen on here, thats a real inspiration
  
  
  just one question, is that pop off dump valve thing realy needed?
  
  my VNT control is nearly the same as that but mine dont work very well, urs looks a bit more sturdy, think im gona copy you
  
  hydm