16v Digfant II FAQ

[Das Kraut]

Quote, originally posted by boopizi »

................. i like the idea of a 16v digi2 but most the mrk2 turbos i'v seen are running stand alone ecu.

or Digi 1 which I am contemplating. Sorry Digifant II.

[rychas1]

yes. timing has to be set @ 2500.

[1990Cabriolet]

i have 1 1990 cabriolet digifont 1.8, 4 cyl single over head 5 spd

im getting no power to the fuel injector rail, thus it cranks but dosn't turn over unless you spray gas in the intank and it'll run til the prime is gone

we checked the computer relays.. seem to be,

any ideas? all is welcome! short in the wire? the computer? other?

anybody have the same car or simular problem??

this is our only car currently so it's a big problem as far as work and school!

it's currently at 13 1/2 and coolidge at a friends home..

thanks VW fam/guys! Mike

[1990Cabriolet]

i have 1 1990 cabriolet
digifont (I or II I'm not sure)
1.8, 4 cyl single over head 5 spd

im getting no power to the fuel injector rail, thus it cranks but dosn't turn over unless you spray gas in the intank and it'll run til the prime is gone

we checked the computer relays.. seem to be,

any ideas? all is welcome! short in the wire? the computer? other?

anybody have the same car or simular problem??

this is our only car currently so it's a big problem as far as work and school!

it's currently at 13 1/2 and coolidge at a friends home..

thanks VW fam/guys! Mike

[dedhkrz]

Quote, originally posted by 1990Cabriolet »

i have 1 1990 cabriolet digifont (I or II I'm not sure) 1.8, 4 cyl single over head 5 spd im getting no power to the fuel injector rail, thus it cranks but dosn't turn over unless you spray gas in the intank and it'll run til the prime is gone we checked the computer relays.. seem to be, any ideas? all is welcome! short in the wire? the computer? other? anybody have the same car or simular problem?? this is our only car currently so it's a big problem as far as work and school! it's currently at 13 1/2 and coolidge at a friends home.. thanks VW fam/guys! Mike

Wrong forum.
Maybe this will work a little better
http://forums.vwvortex.com/zeroforum?id=152

[Mk2 SAiNT]

Is there a way to bypass the MAF and run ITBs?

I finally got around to thrumbing through this thread but not all the pages. So forgive me if someone has already answered and replied.

[Nart]

plz some one help me

i have a 1.8 16v engine with digi2 system

i have some problems :

1: when the car runing For long time and rough drivin at high speeds

when i turn oFF the car and i wanna start it again .... its start so deFecult unless i wait the car to cold then it will start normaly .

2: i cant do the timing thing For the engine right ... i keep hear the valves singing at rought drivin

i cheked all the wires and i made it as u said letraly

[ohfllifer]

Quote, originally posted by Nart »

plz some one help me 1: when the car runing For long time and rough drivin at high speeds when i turn oFF the car and i wanna start it again .... its start so deFecult unless i wait the car to cold then it will start normaly .

I had this problem. I put in a ford starter silenoid as a starter relay and it has worked so for. Its a starter heat soak problem.

[jettason28]

x2 on the heatsoak. Check out this thread:

http://forums.vwvortex.com/zerothread?id=2593146

[OhioBenz]

wiring....

hope you can follow me in this post:

http://www.ohiovw.com/forum/de...26090

[Nart]

jettason28 thx dude great work

but my starter problem not like that:

Symptom: You turn the key and nothing happens. Nothing. Not even a click. The voltmeter does however show you sucking major current.

when my car is hot and i wanna start the car .... u can hear the starter
workin but so weak it cant start the engine and aFter 10 seconds oF weak workin the engine run!

[ohfllifer]

Quote, originally posted by Nart »

when my car is hot and i wanna start the car .... u can hear the starter workin but so weak it cant start the engine and aFter 10 seconds oF weak workin the engine run!

It could still be a heat soak problem. Mine did both, some times it would not do a thing and other times it would crank really really slow and strained. Or maybe your starter is just getting old.

[Nart]

ya i think u r right i will use the starter silenoid as a starter relay

and i will see what will happen .... or i will change the starter

thx everybody

[OhioBenz]

Quote, originally posted by Nart »

ya i think u r right i will use the starter silenoid as a starter relay and i will see what will happen .... or i will change the starter thx everybody

i've never had to use a relay... just replaced the thin wiring with heavier stuff.....
run 3 GLI's like that - no more problems!

[Nart]

Guys Plz Tell me whats wrong with my engine !!!

i cant control the idle and the revs oF the engine

i have 1.8 16v kr with digifant2 system but without a knock sensor !!

is that wrong! or what !

i did a long search and i cant Find anything! and i cant control that engine!

[beggo]

well i was wonderin if any one has done a real motronic to digifant 2 conversion. like a car that is motronic converted digifant? because most of there cars are already digifant

[Capt.Dreadz]

Wow...I haven't been in this thread in a long time. I've long since upgraded.

Quote, originally posted by Capt.Dreadz »

[cabrio2.0]

i know this is an old post but i hope u r still active on this subject, or if any one can help. doing 2.0 16v into a 85 cabriolet mk1, i have a digi2 ecu and harness, was also sent a knock sensor with the harness, there isn't a conection for the socket. does the knksnsr conect right to the harness or is there some place else that i should be looking to conect it to?

[erich83]

HEllo!
Who has finaly managed to adapt a electronic injection on a KR engine?
What are the minimum parts requested?
How much did you pay in parts to make this modification?

[MKIIJERKSTORE]

First Major Kudos to you on the car and swap!!!

I have a 1991 GTI 8V and want to do a 16v swap.

I am wondering if you were runnning a 8V digi2 computer like i already have or did you pull the digi 2 out of the 16v passat and what year passat was it from...

[rychas1]

the digi2 is the same across the board. passat had 16v motronic, not digifant. all 16vs were motronic cis-e. all 8v were either digifant or cis/cis-e. so basically, its taking out your physical 8v motor (leaving all wiring there) and bolting in the 16v, plugging up the 8v wiring. the total tweaks are minor in the scheme of things.

[MKIIJERKSTORE]

wow!!! that easy huh!!! Damn game on for me!!! i think i saw a 16v at the local junk yard score!!!!

[rychas1]

that easy

[boopizi]

How would you guys say your 16v over all preforms on the digiII system oppose to CIS or Motronic? Just curious if you should go head to head.

[rychas1]

the guys who did the swap the right way dont have issues. mine was pretty much flawless. i have some issues, but they were 16v issues, not management issues. jsut the usual wear/tear that wouldve happened anyway. once its dialed in, it makes good power, just like factory. i thnk people were under the impression that a digi2 swap would make the car faster/more power than cis. that was never the goal. digifant is, however, much more reliable and easy to diagnose/fix than cis. for me, the only reason a 16v went in was that my 8v crapped out. easy choice. now, swapping a perfectly good runnng cis for digifant is just silly, unless u just reeeeeeeeeeally want digifant. and ill say this...i didnt have any trouble pulling a cis 16v 5speed in my digifant2 16v automatic 3speed past 130mph. that is not a typo. it really was a good setup.

[cabrio2.0]

do you have any other pics of motor, basicaly different angles?

[boopizi]

Quote, originally posted by rychas1 »

the guys who did the swap the right way dont have issues. mine was pretty much flawless. i have some issues, but they were 16v issues, not management issues. jsut the usual wear/tear that wouldve happened anyway. once its dialed in, it makes good power, just like factory. i thnk people were under the impression that a digi2 swap would make the car faster/more power than cis. that was never the goal. digifant is, however, much more reliable and easy to diagnose/fix than cis. for me, the only reason a 16v went in was that my 8v crapped out. easy choice. now, swapping a perfectly good runnng cis for digifant is just silly, unless u just reeeeeeeeeeally want digifant. and ill say this...i didnt have any trouble pulling a cis 16v 5speed in my digifant2 16v automatic 3speed past 130mph. that is not a typo. it really was a good setup.

Vary interesting.

[chemicalbro13]

i have been runing the digi2 16v for a while now and i am still having some minor problems with not getting enough air...so i got a bmw maf and tried to hook that up but i could get it to idle great when adjusting the spring but then it wouldnt run worth **** but i could get it to run good but not idle at all.....and when i use the vw maf it bogs off the start in first but once im above 2k rpms it takes off....any info on the bmw maf or maybe thats not my problem...any help?

[rychas1]

the bmw maf is not your issue. it should run on the regular vw vam as is. i did 0 mods to mine, and it ran fine. check vacuum and plug/grounds.

[gerk123]

Hey guys, I have a 1991 Jetta coupe with a 1.8 16v swapped into it (digi 2) my car seems to be burning alot of gas and when i say alot i mean alot..(95L of gas and got 360 kms) anyways it seems to run alright when I start it up in the morning until i start driving it. On occasion the rpm's will get stuck at 3000 and when i tap the gas it makes some kind of sucking noise then it climbs down...the idol is also very weird i've adjusted the idol screw several times now and it keeps going back to 1500rpms to 2000rpms. BTW the car has no cat and I think i O2 sensor is gone..any input is appreciated.

[rychas1]

Quote, originally posted by gerk123 »

Hey guys, I have a 1991 Jetta coupe with a 1.8 16v swapped into it (digi 2) my car seems to be burning alot of gas and when i say alot i mean alot..(95L of gas and got 360 kms) anyways it seems to run alright when I start it up in the morning until i start driving it. On occasion the rpm's will get stuck at 3000 and when i tap the gas it makes some kind of sucking noise then it climbs down...the idol is also very weird i've adjusted the idol screw several times now and it keeps going back to 1500rpms to 2000rpms. BTW the car has no cat and I think i O2 sensor is gone..any input is appreciated.

the answer is there. your car is stuck in rich mode. change the cts, get a cat and o2, clear the codes, and see waht happens next..

[Sallad]

Quote, originally posted by beggo »

well i was wonderin if any one has done a real motronic to digifant 2 conversion. like a car that is motronic converted digifant? because most of there cars are already digifant

I'm in the middle of doing that right now.

My car is a MK3 Jetta that came with a 1.8 Mono-Motronic, then I swapped in a 9A from a Passatt. (CIS Motronic) now I'm swapping in a DIGI 2 setup, just need the fuel reg installed and I'm ready to fire it up.

[rychas1]

Quote, originally posted by beggo »

well i was wonderin if any one has done a real motronic to digifant 2 conversion. like a car that is motronic converted digifant? because most of there cars are already digifant

i have seen a few, yes. motronic pulled out, digifant 2 put in.

[gerk123]

Ive had enough with digi 2, im going digi 1 with a turbonator

[amstad]

rychas1
We are mid way thorugh swaping out 8v auto to 2.0 16v 5spd.
Couple questions;
1) What is best 8v throttle body to use for simple plug and play? Our 8v auto throttle body is quite different for throttle cable connection compared to 16v. We definitely want to be able to just plug in the throttle switch and cable.
2) Any input to cold start injector hook up using digi 2 vs. old 16v set up?