Car Cannot Take Timing

[r33_racer]

Good to see its all sorted. Congrats on the outcome too!

I bet you are happy that issue is in the past now

[GTScotT]

Glad to see this is resolved, I have been watching with great interest.

Today I was having a think and felt worried about the issue occurring on more peoples cars than we would like, and ultimate I came to the conclusion that we are a little stuck when we go for poverty pack Nistune boards.

I am just wondering and thinking aloud, has anyone ever tried to run a different trigger system on their Nistune? Such as a crank trigger or similar? I would REALLY like to know if this is at all possible. Perhaps a call to the Nistune dude in SA is necessary, as I am sure something simple can be written into the code.

[XKLABA]

I have a Ross trigger wheel setup with a convertor box that changes the signal to a factory Nissan signal to run with the Power FC, so surely the Nistune could read that

[Ben C34]

I wouldn't consider nistune to be a poverty pack. Most guys that go srandalone ecu still use the stock cas anyway.

[scotty nm35]

Trent and I were discussing this very topic yesterday after seeing the fault first hand. We agreed the later (VQ etc) motors using a flywheel based trigger with a large trigger wheel behind the starter teeth was a much better idea, as the larger the wheel, the easier it is to pick up the trigger magnetically, hence less noise. Not sure how hard it would be to make something like that work on the RB flywheel though.

As for the stock cas, the spacing is just too small between the cutouts for a lagging optical sensor to pick up. That said, they are very old by now and most probably require replacement. Any idea how much they sell for new?

I wonder how hard it would be to modify the stock harmonic balancer for a trigger wheel? All it needs is a 24 tooth chain sprocket tapped on to it with one tooth ground down, correct? But you would still require the converter box for the Nistune.

[GTScotT]

I'm just being funny about the pov pack, its definitely the cheapest option is all. I'd run it over a lot of other aftermarket units, but would rather run a Link or Adaptronic for that matter. Money talks

XKLABA do you mind telling me who makes the converter box? Is it also Ross? I agree if the PFC can do it, the Nistune can, too. How do you find it works?

[XKLABA]

Scott, the box is actually made by Morristech and sold through Ross as part of there kit, at an extra price of corse

I didn't end up using it, I bought a Syvecs S8 ECU and it reads the trigger sensor directly and the standard Cas for phasing

[GTScotT]

Thanks for the feedback, shame you didn't get to use it with the PFC!

[STATUS]

That's a shame the trace didn't show it up? was that using nistune to log it? Perhaps the sample rate isn't fast enough, as you know everything is happening extremely fast!

It doesnt show up in any ecu in the log.

[Lithium]

It doesnt show up in any ecu in the log.

Yeah, the ECU doesn't know any more than the CAS is telling it in terms of where the crank position is. The ECU will do it's normal calculation on advance and record that in the log, the best chance of spotting a triggering issue is if the ECU is smart enough to realise it has not recorded a trigger in the period of time it should have and then logged it as a warning.... or if a triggering is bad enough the deviation in the logged rpm "curve" has the potential to get quite conspicuous.

[Ben C34]

I thought it might have shown up as erratic timing being delivered in the nistune log. Obviously best chioce is using a scope to log it.

[XKLABA]

Thanks for the feedback, shame you didn't get to use it with the PFC!

Your welcome, it may end up on the 32 yet, with a 36-2 CAS disc and the PFC if I don't bit the bullit and get an EmTron

Paul had it on his car with the link using the nissan signal before getting the M3 put in, he might be able to shed some light on this

[XKLABA]

I thought it might have shown up as erratic timing being delivered in the nistune log. Obviously best chioce is using a scope to log it.

One of the joys of paying big money of a ECU is the Syvecs has a built in 1khz oscilloscope, which was instrumental in finding a sensor issue I had with the Ross setup

[Chris32]

One thing I'm keen to know, did it make that power with the stock airbox?

[Manuel Kasko]

One thing I'm keen to know, did it make that power with the stock airbox?

Two stock airbox

But with it taken off there was an increase. I think it's a page back or in his build thread.

Pretty interesting

[scotty nm35]

The two lines on the graph are with filter and without

Shame we didn't test the airbox closed with no filter, just with the lid off and no filter, (mainly as the filter kept popping out on decel.) The filter was dirty, though I suspect the snorkel holds power back a bit. Stao has drilled lots of holes in the lid of his which obviously works.