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    Thread: 16v Digfant II FAQ

    1. 04-06-2006 01:02 PM #561
      Quote, originally posted by Royale10 »
      are these the injector cups that i need?

      http://www.germanautoparts.com.../93/2

      yes

    2. 04-07-2006 01:27 AM #562
      Just got the car out of storage yesterday, car seems to be working alright, still has the same idle problem .. . and i think it has to do with breaking which leads me toward a vaccume leak . .it idle bounces and stalls itself sometimes. . . but works perfectly with the ISV unplugged(when warm of course).
      I am going to go through all the vaccume connections and see if i can fix the issue. . .I'm nerotic when it comes to having my Digi2 work correctly stock

    3. Member Gabe.'s Avatar
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      04-07-2006 01:34 AM #563
      thank you
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    4. 04-07-2006 05:35 AM #564
      Quote, originally posted by veedubinit »
      Just got the car out of storage yesterday, car seems to be working alright, still has the same idle problem .. . and i think it has to do with breaking which leads me toward a vaccume leak . .it idle bounces and stalls itself sometimes. . . but works perfectly with the ISV unplugged(when warm of course).
      I am going to go through all the vaccume connections and see if i can fix the issue. . .I'm nerotic when it comes to having my Digi2 work correctly stock

      lol, i ripped my engine out, and im gonna start it up tomorrow, i hope its still runs as good as it did. im pretty confident that it will...but its in the back of my mind


    5. 05-05-2006 10:40 PM #565
      My swap starts friday directly after work. i have everything laid out and ready to go lol. i have until sunday evening to get it together. shouldant be hard, the 16v is assembled, the wires are tagged, the clutch and tranny are ready to go in just need a valve cover gasket and im set.

    6. 05-07-2006 02:40 PM #566
      So, i am megasquirtting my car and i thought i would put my lc-1 in my car prior to hte megasquir to get some readings for a laugh....
      My setup :

      2L digi2 16v
      modified 4-1 header (supersprint) 2.25" tt exhaust no cat 1 res
      o2 in the stock cat area
      CSW chip
      no isv

      i cant think of anything else important


      I installed this badboy and i got it running finally and @ idle it was like 12.1:1 and far richer when i moved the idle about, JESUS thats rich ... I will add to this when i drive it around a bit

      -ok did some tinkering with the idle mix, i cranked to around 14.7 (weird that it sat there perfectly, wtf?) i took my csw chip out and it runs way better without it, what a piece of crap it is, fu vwpilot...
      uh ya so.. ineed to do some logging, i cant believe how much better it runs with the idle mix changed, i might put the chip back in, i could have sworn it ran a tad lean whilst i drove around earlier



      Modified by mxman at 7:19 AM 5-8-2006


    7. Member furious GTi's Avatar
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      05-11-2006 12:04 AM #567
      hey guys im doing a digi 2 16v in my 81 caddy originally diesel. i couldnt find anything in search.
      i need to find out a cuple wires to get mine running
      on the main plug that has 5 wires red/black goes to positive side on distributer ? black/yellow goes to what for the injecters? red/green i have no clue red/yellow fuel pump turn on white/yellow..oxy sensor?
      i dont really know what to do here or what ones i really need and if you know where to hook them up on my diesel fues box.. im using the original rabbit fuse box. i already have the black/red to the distributer and the red/ yellow to my fuel pump relay

      and the pics

      i made the fuel rail at school.. its pretty sick for $10




      its all in this

      thanks in advance

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    8. Member furious GTi's Avatar
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      05-11-2006 03:08 PM #568
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    9. 05-11-2006 03:47 PM #569
      i dont understand. if ur running digi2, im going to safely assume u have the digi2 harness? if so, just plug it in the stock locations. if not, u need more help i cant provide. help this dood!!!
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    10. 05-11-2006 04:52 PM #570
      Quote, originally posted by mxman »
      So, i am megasquirtting my car and i thought i would put my lc-1 in my car prior to hte megasquir to get some readings for a laugh....
      My setup :

      2L digi2 16v
      modified 4-1 header (supersprint) 2.25" tt exhaust no cat 1 res
      o2 in the stock cat area
      CSW chip
      no isv

      i cant think of anything else important


      I installed this badboy and i got it running finally and @ idle it was like 12.1:1 and far richer when i moved the idle about, JESUS thats rich ... I will add to this when i drive it around a bit

      -ok did some tinkering with the idle mix, i cranked to around 14.7 (weird that it sat there perfectly, wtf?) i took my csw chip out and it runs way better without it, what a piece of crap it is, fu vwpilot...
      uh ya so.. ineed to do some logging, i cant believe how much better it runs with the idle mix changed, i might put the chip back in, i could have sworn it ran a tad lean whilst i drove around earlier

      Modified by mxman at 7:19 AM 5-8-2006

      How did you make out??

      And with the cabby. if your using the digi2 harness completly everyhting should plug into its spots


    11. Member furious GTi's Avatar
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      05-12-2006 01:02 AM #571
      im using rabbit diesel fues box. with digi2 engine harness
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    12. Member furious GTi's Avatar
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      05-14-2006 02:03 AM #572
      ok i got it running.. but i have a little problem.. it wont rev up.. its like hunting up and down a bit.. but wont rev up.. im thinking its the computer? or MAF? any help would be great
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    13. Member Gabe.'s Avatar
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      05-14-2006 04:12 AM #573
      ok quick question guys... I got my car running on the digi 2 in december when i was on winter break. Unfortunately it sat til i got back for the summer. Once i got home i replaced the injector o-rings and the injector cups just because i hadnt done that yet. When i went to start it it turned over for a sec and then stopped. Now when i try to start it nothing happens and the clock resets. Tomorrow im going to unplug the battery for a bit and reset the ecu to see if the does anything but im thinking i have a wiring issue on my hands somehow. Do any of you have any ideas of what my problem could be?

      I guess that wasnt a very quick question.

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    14. Member furious GTi's Avatar
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      05-15-2006 12:10 AM #574
      PLEASE HELP ME!!!!
      ok i got it running.. but i have a little problem.. it wont rev up.. its like hunting up and down a bit.. but wont rev up.. im thinking its the computer? or MAF?
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    15. Member Gabe.'s Avatar
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      05-15-2006 12:44 AM #575
      ok well i got mine running again, my battery terminals were corroded a bit and my injector harness was grounding out on the intake manifold.
      lilliiilliiliilliilil
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    16. 05-15-2006 12:48 AM #576
      Quote, originally posted by Royale10 »
      ok quick question guys... I got my car running on the digi 2 in december when i was on winter break. Unfortunately it sat til i got back for the summer. Once i got home i replaced the injector o-rings and the injector cups just because i hadnt done that yet. When i went to start it it turned over for a sec and then stopped. Now when i try to start it nothing happens and the clock resets. Tomorrow im going to unplug the battery for a bit and reset the ecu to see if the does anything but im thinking i have a wiring issue on my hands somehow. Do any of you have any ideas of what my problem could be?

      I guess that wasnt a very quick question.

      Clean your battery connections, then charge your battery. . either it dies. . or corroded and got icky over winter. . easy problem to fix.

      As far as the caddy with the diesel fuse box. .. .. if i were you I'd be running a digi2 fuse box. . way less nightmare.. . digi2 can be a nightmare finding problems with everyhting stock . . let alone having it done like that. and you need to explain that problem a bit better. .. because then you opent he throttle something has to happen.. . .because more air goes into the engine. . if its hitting a sort of fuel cut then sure. . you either have a MAF problem or a TPS problem, but your description doesnt explain much. My advice is wire it stock digi2 with digi2 fusebox


    17. Member furious GTi's Avatar
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      05-15-2006 07:45 AM #577
      i know its wired in properly.
      when you open the throttle it will back fire .. or die...
      could this be a fuel problem? maybe one of my lines is pinched
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    18. 05-15-2006 05:17 PM #578
      engine is in, just need to find a 16v intake boot. rigged up an intake, started it, idled at 1000 pics someday

    19. Member furious GTi's Avatar
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      05-16-2006 12:01 AM #579
      my intake.
      its not painted yet

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    20. Member furious GTi's Avatar
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      05-16-2006 11:08 AM #580
      i think the problem that i have is a fuel problem.. i have a mk2 digifart fuel pump in my caddy.. but it sits higher than the gas tank. could this be a problem? im going to drop it down and see what happens




      Modified by furious GTi at 8:37 AM 5-16-2006
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    21. 05-16-2006 07:54 PM #581
      ..****...... my cars down for a bit. came home from work and started it up... idled smoooooth then very slight knocking,. could barely hear it at all. kinda sounded lke lifters tapping, adjust the distributor timing a bit it idles for like 30 seconds then it got louder. shut my eyes, kicked my beer shut it off. drain oil, metal shavings.... awesome... looks like ill be doing some bearings this week

    22. Member furious GTi's Avatar
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      05-16-2006 09:39 PM #582
      what the hell is wrong with my truck!
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    23. Member furious GTi's Avatar
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      05-17-2006 12:23 AM #583
      whats the difference between standard and auto engine harnesses?
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    24. Member furious GTi's Avatar
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      05-19-2006 12:20 AM #584
      ok guys.. heres the update/question
      the fuel rail i made didnt seal the injectors tight so they leaked and i put silicone in them...silicone got stuck in injectors..truck didnt run
      so my dads friend had this fuel rail made for a 16v digi so i got different
      injectors and put it on.. no leaks = good

      now. i got it to kinda rev up . when you hold it wide open it bogs.
      BUT.. the distributer is all the way adjusted. to this

      and when you take out the bolts and turn it more back it gets better..
      cam timming and base timming are bang on..
      anyone know what it is?
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      05-31-2006 03:38 PM #585
      have you checked your CO if that is off it won't run worth tihs, I would also keep playing with the timing, but I know after I put my bmw maf on I just had to get the CO set properly and the car is screamin fast now
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    26. 06-02-2006 08:56 AM #586
      I don't want to flame this thread. Everyone already knows how I feel about Digi II.

      But I am almost finished tuning my Megasquirt, and thought I would update the digi II 16v community on my progress. I used to run on digi II. MS blows it right out of the water.

      Nothing has changed except the EFI. Same injector etc... The car sounds way better in both engine noise and WOT! It is much faster. I can rev till 7500 rpm and the best part... I can monitor everything that happens with my laptop. I also am running th einjector bands alternating, so unlike digifant that just turns on all in jectors at the same time, I'm alternating between two banks. It makes things more efficient.


    27. 06-19-2006 11:52 AM #587
      I completely agree with lovre, digi2 was ok and all but it was such a pain and the engine didnt have nearly as much power as martyn16v's untuned megasquirt map... go ms man... toss digi2...

      there is this weird problem nobody knows how to fix, suddenly you start blowing cts' and your o2 sensor will no longer work with the oem ecu, i had 2 different o2 sensors not work with the stock computer...

      if you ARE going to do this swap, replace all the grounds in your car, make sure you set your VAM (the air meter) for spring tension and make sure you have a digi2 vam that has idle mixture adjustment...this can dial out that crappy digi2 bog you hear about....
      my digi2 16v ran at 12:1 at idle (with lc-1 wideband monitoring)


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      06-21-2006 10:53 PM #588
      Hi ppl

      I'am happy about my digi 2 16V on my GTX. But seem to have problem. I Run with ISV, probably work great. And i Run with 02 sensor in the catalysor. Well when i start my engine, the idle must be rought, bounce 1300@3000 during maybe 1 minutes and stall perfectly at 750RPM.

      Second problem, when a make some quick start, and i accelerate fast in second gear and third and fourth when i shift between 3700RPM and 4900 RPM got a big ''backfire'' make some noise at the end of Exhaust. Somes peoples said to me, probably my FPR dont give enought fuel to my engine. So I ckek my spark plug, and i see in top end, the color is white. Probably run too lean. I thing a have not a FPR ajustable. And my car work well except that problem.

      Here a pic of my car:


      Thx for helping me! Could I ajust my FRP manually? Or just change it for newer one ?

      Thx

      Bruno


    29. 06-21-2006 11:25 PM #589
      i take it ur not chipped. that could cause ur leaning issues. also, ur fpr looks kinda rusty. might wanna change that for good measure.
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    30. 06-24-2006 12:06 AM #590
      were do i put the o2 sensor when i use the dual down pipe with 8v cat and rest of the exhaust

    31. 06-24-2006 12:24 AM #591
      um....in the side of the 8v cat
      '11 Routan SE (black), '99 Jetta GLS VR6 5spd (burgundy)
      FE ///Motorsports VCDS Hex-Can, if you need help.
      http://mefi.us/images/fuelly/sig-us/128853.png

    32. 06-24-2006 02:52 AM #592
      woah bro wasn't aware that i had an o2 port on the 8v cat

      EDIT: on closer inspection i do not have an o2 sensor spot on my 8v cat. my 8v had the o2 sensor on the manifold right below the testing port. could this cat be a universal cat with no o2 port?




      Modified by gruvismalt11 at 8:29 AM 6-24-2006


    33. Member HareRocket's Avatar
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      06-30-2006 02:25 AM #593
      couple questions. i have my motronic o2sensor and also a digi2 o2 sensor which should i use? also, is there any way to stick with my 16v throttle body while running digi2? one last question, do i realy need to replace my crank pully bolt when reasembling pully or can i use same bolt again? thanks
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    34. 06-30-2006 10:34 AM #594
      1. use the digi2 sensor
      2. u can use the 16v TB, just switch over the TB switches from the 8v TB
      3. i dont think you need the change this bolt
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      07-02-2006 04:26 AM #595
      alright, almost done with my swap just need to rig up a good intake system now. ANy suggestions? I want the best airflow possible, but will prob not go with the bmw 535i AFM. any pics/suggestions concerning tubing and length and how to fit tubing to boxy front side of digi2 MAS block?

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