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Settings for 81zxt CAS


PITA_Z

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I'm having trouble understanding how exactly I should have have my settings in TunerStudio for using the 81zxt CAS.

I have done as Tony D has done with his with CAS plate and rotated it 72*, but past that, I don't really know what to be

doing.

Here are my current Ignition settings (MSII, latest 3.1.0 extra code)

I thought I should be using toothed wheel, but then the Trigger Wizard under tools & Trigger Offset are disabled..

post-18551-029810100 1302500416_thumb.png

 

post-18551-031950200 1302500421_thumb.png

 

 

I've read & read a lot, but still taking a while for all this to sink in.

Edited by PITA_Z
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I'm getting no response at all from the composite/teeth loggers in TunerStudio while cranking.

I tested the wires as they should be according to moby's info for an 83zxt CAS.

I hope one of you can tell me what settings to be using on the Ignition Options page, as it's probably wrong.

 

 

Dizzy side ------------ Harness Side

Red (12v) B/W

White (MS trigger) G/B

Green (not used) G/Y

Black (gnd) Black

I got (checking just on MS side connector):

Battery voltage on Red-B/W

4.2V on White-G/B (with 1k pullup)

& connection to ground on Black-Black

Can someone tell me where to be looking next to get the CAS reading properly?

Meanwhile I'll continue reading through the manuals.

Thanks.

Edit:

I was fiddling around with the connector between the CAS & MS wires and the fuel pump was coming on & off.

FP wasn't coming on normally when I had it connected & turned the key to power up MS, so I guess I just have a

bad connection there.

Edited by PITA_Z
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You need to use Basic Trigger, and the Trigger Angle / Offset needs to be adjusted so the spark timing you see with a timing light matches what you see in the tuning software. (The correct number will depend on how the distributor has been adjusted.) Toothed Wheel is only used when you have a missing tooth type wheel, or two separate trigger wheels working together. Basic Trigger is what you use for six equally spaced pulses.

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