Petrol mk4 Cupra - Any way to get boost from Diagnostics port?

[Pabs]

Folks,

I've seen several boost gauges that can get their information directly from the diagnostics port, for example the Scangauge II. However, I've noticed that these only work on the diesels.


Does the petrol cupra output to the diagnostics port differ on the two cars? Or are there any boost gauges/readouts that CAN get this information?

Thanks

 

[Pabs]

Ok - can anyone with a liquid gauge confirm if it reads boost for the 1.8T petrol?

If it does, it's not a port limitation - it's a device issue.

Scangauge have released a new model with different firmware (requiring a board change apparently) but waiting to hear back if it reads boost or not. The old version DOES read for diesel.

 

[Damoegan]

I think the Liquid Gauge does read boost, Paul.

Still waiting for ukobd to confirm if the update for the Scangauge will do boost.

 

[Pabs]

Thanks mate. Thought I'd attack it from another angle as well - see if anyone on here had any more info.

I've read that the petrol cupras don't "utilise the MAP sensor PID" - which would indicate that it's impossible to read boost from the diagnostics port. But if the Liquid gauge does, then it has to be possible.

 

[Damoegan]

I'm sure that since you can log boost via vag-com it is possible to get it to work somehow.

 

[Pabs]

fair point. Fingers crossed the scangauge does do it, as it seems like it's exactly the sort of thing I'm looking for.

 

[Damoegan]

Did you actualy get a Scangauge?

If the update does allow it to read boost then its worth doing as its only £25 + P&P...

 

[Pabs]

no, not got one yet. Was going to buy one secondhand, but considering it's price, by the time I've added the £25 odd, it's not much cheaper than a new one. Getting a new one would at least give me warranty, and the updates already completed.

 

[Damoegan]

Cheapest place I've seen them mate http://www.ukobd.co.uk/component/vi...tegory_id=2&flypage=flypage.tpl&product_id=49

 

[Pabs]

Brand new ones on ebay now for about £112, so cheaper still, although not sure if you get caught for import tax - they're in the EU, so shouldn't do.

 

[Damoegan]

Thats good then. Tha last time I looked on ebay for one they were about £150...

 

[truss]

are these like the trip computer? fro mthe look of it the trip computer has some of these features already. whats the difference? accuracy?

 

[Pabs]

These do replicate some of the data that the trip computer displays, but also display a lot more information.

www.scangauge.com will tell you more.

 

[Damoegan]

Also does fault code reading and clearing too.

 

[YellowFR]

Ok - can anyone with a liquid gauge confirm if it reads boost for the 1.8T petrol?

If it does, it's not a port limitation - it's a device issue.

Scangauge have released a new model with different firmware (requiring a board change apparently) but waiting to hear back if it reads boost or not. The old version DOES read for diesel.

My LiquidIbiza gauge reads both command pressure, N75 position, and actual boost pressure fitted in an ibiza FR 1.8T petrol 2005.

Br.

 

[Pabs]

thanks mate. That has at least confirmed it is possible to read this data from the diag. port.

 

[wild willy]

vag check is good also using a pda to display the data.