Syvecs Forums

To have proper sequential injection, knock control etc etc you need a phase sync. So there must be a cam trigger somewhere.

shmed wrote: ↑Sat Sep 21, 2024 9:07 pm https://shop.battlegarage-rs.com/produc ... ck-off-cap

I would assume that is just because you are COP now. The trigger mechanisms will still be inside the dizzy body

Thanks for being patient with me

I'll open up the dizzy delete to see what is inside.

Hi, this is what is inside the cover:



Turns out that I was using the wrong ECU connector too. Found the actual one in a box of bits and it has far fewer wires connected, which makes life a bit easier.

There will be another trigger in there too for phase/sync ID as well as that visible at the front

I would strongly recommend moving to a crank trigger with a missing tooth, instead of using that 24T trigger on the camshaft.

You will still need the phase/sync trigger inside the dizzy either way

There are two sensors inside the dizzy cover, and there is also a crank position sensor (simple two wire one).

Looking at the old writing, it seems that the two sensors were connected at some point, I suspect they shared a ground.

What I can't get my head around is that there are four wires going to the cam position sensor, but only two required by the ECU (cam phase and ground).

Back again, hopefully with a better understanding of what I'm talking about.

I found this which details the inner workings of the stock dizzy and, more importantly, which wires do what:



So, given that the Syvecs has a single connection for CAM phase, I have connected the red wire (Signal Gnd) to the CAM Pos. Gnd pin on the syvecs, and the black (24x signal) wire to the CAM Phase pin.

The other two are not connected.

Does that sound right?

Looking through SCal, I can't find anything that identifies the number of CAM wheel teeth, which makes me wonder if I should be using the green wire with a single tooth to determine TDC.

SCal config:
Sensor Type: 5V Bipolar
Input filter: OFF
Hight Trigger Threshold: 1.90V
Low Trigger Threshold: 0V
High Trigger in Cranking: 0.50V
Low trigger in Cranking: 0V
Signal Trigger Edge: Falling

Crank and Cam Type: Generic - Single Gap Single Cam

I also have two other questions that might be simple:

1. I'm replacing the old Lambda sensor with an NTK L2H2. Should I change the sensor type to UEGO in SCal? Is there anything else I should be aware of as I can only find the wiring information online?

2. The TBV has three connections, 12v, RSO (Open) and RSC (Closed). I can see in SCal that there are two Throttle Bypass Valve outputs, but (currently) only one is assigned.

Given the config in the images below, I assume that TBV Output A should be connected to the Open circuit.

Should I enable TBV Output B and connect it to the Close circuit? (I ask this because the car obviously worked fine without this being connected)


TBV Ouput A


TBV Output B

Until you see a scope of the triggers, hard to say. Hopefully it is a simple pattern though.

But I would still prefer to move to a crank trigger like 36-1 etc and just use the 1 tooth on the cam for phase/cam sensor.

But go with the Haltech instructions to start, then do a syncscope or get a proper oscilloscope on it, ideally also with a cyl1 TDC reference so you can figure out all the angles. Black and green sound correct though.

As for the lambda, the NTK is the only one an S6 would ever have used. So changing from what to what ?

Not sure on the idle.