16v Digifant 1 FAQ

[B4S]

ok. enough is enough. Digi1 uses tps. The throttle body on a G60 only has a idle switch and a WOT switch. correct? The ecu "senses" the thorrtle position by using the difference between each of these switches. correct?

Basic question- The G60 throttle body I bought has an idle switch and a wot switch. Is that all i need?

Digi-1 does NOT use a TPS (unless it's a Cali-digi-1 setup, but that is completely different than regular digi-1 from the G60 corrado the rest of the world got). The digi-1 ecu does not 'sense' throttle position, it only knows if the throttle is closed, open, or at WOT. It uses the difference in MAP signal to determine acceleration fueling, as opposed to a TPS like later Motronic cars used. Any digi-1 throttle body with an actual TPS came from an automatic car, that uses the TPS signal to determine shift points/pressure.

[snikfrits]

I already got a FI chip from SNS. As for the TPS...I figured that out a while ago. thanks though. I always got confused because some people called it Tps (throttle position sensor) when it's more of an idle position sensor. I'm just stuck on the last random wires on the fusebox side of the digi1 harness.

[Mathew...]

anyone have any good/bad experiences with digifant 1 running a 16valve turbo? I'm looking into a custom sns chip. I have an adjustable aeromotive fuel pressure regulator and an aem wideband so i can make sure im never lean. Im running a t3 super 60 at 10lbs with 42lb injectors. Oh and autotech sport cams and autotech 8k springs as well...

Any thoughts on how well digi 1 will run this motor with a custom sns chip?

[snikfrits]

Hate "bumping" threads that aren't FS threads, but I really need help. And matthew, if I could do it again, I would go MS. Good luck with getting into contact with sns, but the motor will run fine with an sns chip. I have one now, but I got it from a person on here.

[whootwhoot]

back from the dead.

I'm about to make the switch from motronic to digi 1 but i had a few questions before i start to purchase parts. These may sound dumb but i am new (really new) to any sort of modifications to my car. This will be my first "real" project. As of right now this is just for a stock N/A 2.0 16v

bear with me
So how do you go about choosing the correct FPR and and injectors? I understand that for situations that require more fuel you get bigger injectors and a FPR that compensates for the pressure. But how do i know the correct one to get based on MY stock motor? i don't want to get parts just because a DIY said so. I've been looking at the Fuel Injection data for motronic and here they are
System pressure- 6.1-6.6 bar
Differential pressure- 1.3-1.6 bar
Residual pressure- 3.2 bar
based on these values where does a person decide to go with a 3.5 bar FPR and #30 injectors (these are from the motronic to digi DIY) instead of these values do i actually go out and measure the pressure at the injectors themselves?

Also, i am going to install and air/fuel gauge as well as it was strongly recommended. how do i know what the correct ratio is for my car?

sorry if i sound stupid but i like understanding things before diving in. any feedback is appreciated.

[Dave926]

Just do it, do not think.

Get a BBM rail and either mk2 or mk3 fpr adapter, stock digi 1 injectors install and go

The bosch fpr's are pretty robust, and will easily bypass the extra pressure/volume from a motronic pump no problem. Ive been doing it for years.

[whootwhoot]

Just do it, do not think.

Get a BBM rail and either mk2 or mk3 fpr adapter, stock digi 1 injectors install and go

The bosch fpr's are pretty robust, and will easily bypass the extra pressure/volume from a motronic pump no problem. Ive been doing it for years.

so i should go with the 3.0 or 3.5 bar fpr? thanks btw

[snikfrits]

I think that depends on what management you're running. Most SNS chips use a 3.5 fpr. Just FYI

[Dave926]

3 bar is whats stock on digi 1. I would also consider tuning the car yourself. SNS sucks to get in touch with

[whootwhoot]

im actually having bbm make me one. ill ask them

[Dave926]

For the amount of money your going to spend on a bbm chip you can get a chip burner for less, and tune as much as you want. A wideband isn't a bad idea here either.

[whootwhoot]

It was $100. Is that alot?

[exjnv]

Hey guys... Ive got a problem with my digi1 16v setup. its a 1.8l 16v on digi1 with an sns chip. the car runs great but when the WOT switch is engaged the car falls on its face.. any ideas? bad switches or bad chip? stock motor with external oil cool and im running no thermostat

[Dave926]

Your missing the point, its a map based tune. Its a generic tune that might fit your car ok, but will never be 100%.

[Ho11ywood]

I just got my Corrado 16vT running and i cant figure out where to put my low oil pressure switch. Ive seen the Digi 2 sensor pick floating around but i havent seen a Digi 1.

[Dave926]

www.a2resource.com

[Ho11ywood]

Is that for me Dave?

[Ho11ywood]

Nevermind i solved it myself. I used the low oil pressure switch and the spacer thats on the corrado g60 head and threaded it into the back of the 16v head and it works perfect.

[Ricecookr]

This thread is so damn dead... anways.

I have a 87 jetta, ce1 fusebox

2L 16v swap.

Digifant 1.


Car was running.

All of a sudden i can't get it to run, I have gas, fuel pressure, i also have power at the coil.

The only thing remotely related to wiring or electronics was that i welded on the body with power to the ecu still on, i never heard any problems about this but some peoples say its a big deal.

I cant get any spark, engine cranks strong but doesn't run.

Any help? just had the wiring redone and it was running fine

[Dave926]

You probably nuked the ecu. Check my threads that I started, your having the same issues that I did.

[Ricecookr]

the car started a few times after the weld so i dont see how it could be nuked?

how do i check the ecu?

I have my bentley handy for checking the coil and such but not the ecu

[Ricecookr]

I hate you for making me search for a digi 1 ecu.

But i love you because looking thru your thread, i found out green wire was off the - pole of the coil.

[Ho11ywood]

This thread is so damn dead... anways.

I have a 87 jetta, ce1 fusebox

2L 16v swap.

Digifant 1.


Car was running.

All of a sudden i can't get it to run, I have gas, fuel pressure, i also have power at the coil.

The only thing remotely related to wiring or electronics was that i welded on the body with power to the ecu still on, i never heard any problems about this but some peoples say its a big deal.

I cant get any spark, engine cranks strong but doesn't run.

Any help? just had the wiring redone and it was running fine

Make sure your hall sender is plugged in.

[Ho11ywood]

Does anyone have the side view picture of the 16v head with the digi 1 sensor positions?

[Ho11ywood]

[Dave926]

read the directions on that original picture

[Ho11ywood]

read the directions on that original picture

Cant you just say yes thats correct or no dont do that?

[Ho11ywood]

Well i went ahead and made myself a wire harness to plug into the black digi 1 coolant plug with a spade terminal on the other end and viola my temprature gauge works. All you have to do is cut off the black digi 1 plug and install a spade terminal on the hotwire and plug into #5. The hotwire on my car is yellow and red and the ground is brown of course. Make sure you ground that brown off.

[whootwhoot]

so i have this charcoal solenoid valve unplugged. Does anyone have any idea what i should do with it? Plug the line?

[MSpeed]

Im in the prosses of converting my 16v KR to digifant, but im wondering about the engine harness. The two plugs by the ecu plug. Do all of these wires need power? how do i connect these?

[Hoodie89Golf]

I am in the process of converting a 2.0 16v to digi 1. I have most of it hooked up and figured out but was stumped on the o2 sensor. I narrowed it down to one plug that I think has to be it but it doesnt look like any of the pictures I have seen. Maybe previous owner switched it out or I am just really confused. Anyways I have some pictures of it, if this is infact the o2 plug how should I go about splicing or whatever to make it work with a ce-2 plug? I know this is an old topic so I posted in both digi 1 threads hoping someone will see it. Thanks

[elpitufillo]

Back from the dead

Well, i been searching for some days now, and i dont seem to find exactly whats i need

So i got a corrado g60 with 2.0 16v n/a digi 1 build now
It has the stock golf throtle body, wich got a vacum slot in the back (near of the firewall) and i have it open, because if i cap it, my car just dosnt idle and dies.

Any info?

O yeah, right now im running on the g60 stock ecu, im about to buy the chip from bbm

Thanks!!

[Skursh]

Bringing this back to life..

I wanna keep this cheap, I am on a tight budget.

I'm new here and kinda new to this.
This is my first time switching over to something else.

I have a 1990 g60 corrado
1.8l 16v from a gti. Setup for motronic
G60 tranny
G60 clutch
I am putting the motor in them and I have to switch over to digi 1
I am not going turbo,I want a reliable dd!!

I have
1. G60 wire harness
2. G60 Ecu
3. G60 injectors
4. G60 radiator
5. G60 bay harness
6. Motor mounts, bbm solid ft motor mount
7. I have both g60 and 16v throttle bodies

I need
1. Fuel rail. (found on eBay, 79.00,http://www.ebay.com/itm/OBX-H-Flow-F...&forceRpt=true)
2. G60/16v co pot sensor bung from bbm
3. A chip, idk which one I need


What radiator hoses will fit?
Can I use a g60 fpr?
What else do I need?
Do I need to extend or buy adapters for the fuel lines?

I read a lot of this and everyone keeps saying something different

Anyone please help!! Im confused

[9aba16vt]

So to start off.. you need to get everything to convert the g60 to 16v, then work your way to all of the other things. You can go 16v na with exactly what you have now.

[Skursh]

So I don't need to convert to efi.