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Robbie C's Ibiza Cupra

joehirth

Rate me up baby
Apr 19, 2010
1,896
3
Woking, Surrey
www.facebook.com
Cheers Joe - will see what I find when we have a look underneath in the week.

Just fired the car up on the reset fuelling settings (i.e. as it was prior to the rebuild) and it now drives and boosts fine.

So far £40 of VPower has got me 100 miles, mixed driving, lol

Lol! Don't mess ;). Does it pull harder with the overbore? What were you trying to achieve with the tweaks exactly? I can have a word with Wak at work to see his views on what You should do, if you like?
 
Jan 8, 2007
2,958
1
Wiltshire
OK, bit more info/update

After resetting the fuel settings (to pre-rebuild figures) I took the car on a ~150 mile drive to continue running it in.

On the last 50 miles home the car was intermittently misfiring very badly under load before my EML lit up the dash.

Got it home to check codes and fresh fuel trim figures after 150 miles to find:

fueltrims290511Woking_r.png


Code:
VAG-COM Version: Release 409.1-S

Control Module Part Number: 6K0 906 032 AA
  Component and/or Version: 1.8L 20VT EU3    05 0002
           Software Coding: 10500
            Work Shop Code: WSC 12849
3 Faults Found:
16514 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit
        P0130 - 35-10 - - - Intermittent
17536 - Fuel Trim: Bank 1 (Mult): System too Lean
        P1128 - 35-00 - -
17522 - Oxygen (Lambda) Sensor: B1 S2: Internal Resistance too High
        P1114 - 35-10 - - - Intermittent

The car smells like it's running rich and the exhaust tip is coked black after just a couple of hundred miles so the lean error confuses me a little...unless it's a consequence of a f**ked pre-cat lambda that's only intermittently working?

New set of plugs on order just to tick these off the list, along with a wideband sensor to see if I can get some proper readings.

Thoughts?
 

tarzan

cupra owner from norway
Mar 15, 2008
1,122
0
drammen norway
i have the 17522 fault code to and found that one wire just near the contact was ripped off.So have to fix that.MIne is running fine and us very little fuel.
 
Jan 8, 2007
2,958
1
Wiltshire
That'll be it Joe. Tempted to try MAF as it's a possible symptom of a couple of codes I've had now - process of elimination I guess, though I've had these lambda ones for a while - even before the rebuild when fuelling was fine.

Could try:

1. Inspect lambda wiring
2. Replace wideband sensor to try and get some proper readings to guide me
3. Replace plugs
4. Unplug/replace MAF

Shame you couldn't come out with the car running to it's true potential - last night was a million miles away from that. I'll get there...
 
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joehirth

Rate me up baby
Apr 19, 2010
1,896
3
Woking, Surrey
www.facebook.com
That'll be it Joe. Tempted to try MAF as it's a possible symptom of a couple of codes I've had now - process of elimination I guess, though I've had these lambda ones for a while - even before the rebuild when fuelling was fine.

Could try:

1. Inspect lambda wiring
2. Replace wideband sensor to try and get some proper readings to guide me
3. Replace plugs
3. Unplug/replace MAF

Shame you couldn't come out with the car running to it's true potential - last night was a million miles away from that. I'll get there...

No problem - was good to put a name to a face none the less. What sort of BHP did you think it was running yesterday? I just loved that whine :D

Just remember when unplugging MAF it can mask other faults too but it's a good indication. I remember mine was stalling at junctions and misfiring when a "plugging" bolt popped out of a manifold pipe I deleted. Mind you it was pretty obvious and sounded like a V8 too :rolleyes:

One thing I notice you're not checking which might be worth a look is the OEM narrowband lambda sensor - that code points to the OEM one.

Also just thought I have a brand new wideband sensor you could of tried yesterday!
 
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Jan 8, 2007
2,958
1
Wiltshire
The whine is awesome, I love it

Probably barely over 200 last night with the misfiring - not much at all. Max MAF reading scales to ~230 BHP atm when running properly, which it wasn't.

No worries, my new wideband sensor should be arriving early next week
 
Jan 8, 2007
2,958
1
Wiltshire
Yeh ported AYP small port by JP Phil

Currently tucked the car up in the garage until I can be assed to look at it again - it's been pissing me off royally over the past week or so...

On two occasions now when the car's been left standing for 3+ days it's dumped the entire contents of the water/meth bottle into my charge pipework, pooling in the intercooler :rolleyes:

This has meant I've had to un-do the pipework at the FMIC exit and start the car to rev it out, watching litres of water/meth come spewing out of the intercooler onto the drive.

Enough is enough with Devil's Own kit - I'll be swapping it out for AEM soon. I just can't trust it when it's such a critical component.

I'm also waiting on a new set of plugs and a new wideband sensor to see if these make any difference and I'll inspect the colour of my current plugs when we whip them out to see what indication they give me. Once I'm happy with the fuelling I'll continue to run it in before taking it over to Bill for any necessary tweaks to the map.

I'll get there - just really ran out of patience with it lately.
 
Nov 2, 2004
9,335
0
South Wales
Keep the faith robbie, i know how you feel. Im just gettin the bug back again to do stuff to mine after months of neglect and not bothering.

Im still toying with using my head and porting it rather than trying to find a largeport head.

Any thoughts as i know you must have researched a lot. What did JP say?
 

joehirth

Rate me up baby
Apr 19, 2010
1,896
3
Woking, Surrey
www.facebook.com
Keep the faith robbie, i know how you feel. Im just gettin the bug back again to do stuff to mine after months of neglect and not bothering.

Im still toying with using my head and porting it rather than trying to find a largeport head.

Any thoughts as i know you must have researched a lot. What did JP say?

Uh oh *queue for some major disagreements on largeport vs smallport dispute*

You'll get there with it - at least you can ignore it as you have a daily, think what i've got in store for me.

Has that wideband not turned up yet? As I say offer still stands if you want to have mine (and I'll have your replacement when it comes). Brand new still if you can come and collect it.
 
Jan 8, 2007
2,958
1
Wiltshire
Yeah I will do Phil - just got to a stage last week where I had to walk away from it for a while.

Dale's busy getting his Corsa rebuilt for PV this weekend so it gives us both a break from it until next week when we can take another look and get things sorted.

Have a look at post #932 onwards (page 47-48) for Alex/JP's, Bill's and Issam's views on smallport vs largeport, which seems to focus around volume vs velocity. A large port can flow more, but the gases in the ported small port will move faster which is also an important factor to consider, though many don't perceive large port as noticeably laggy in comparison.

For your powerband you might find a large port more beneficial, I'm not sure as it is application specific and you're using a very different turbo. Mine is built with an eventual goal of high 300, low 400 power figures with minimal lag.

I missed the delivery on the plugs and wideband sensor Joe but am going to pick them up from the depot this week, thanks all the same :)
 
Jan 8, 2007
2,958
1
Wiltshire
Same kit yeah. Possibly, but it's not the first issue I've had with this kit and I'm not comfortable with the fact it offers no redundancy if it fails. The AEM kit appears much more polished - I've built the car with all the best bits I can find to make it as reliable as possible and DO just doesn't cut it

It's strange how it's only done this when left over the course of 3 days, when left overnight the level has stayed the same
 

rsmith

Robbie
Apr 28, 2004
2,797
1
Tipperary, Ireland
I agree, i would not buy the Devil's own kit again, no redunancy scares me especially with the amount of timing added for WMI, mine has stopped working for no apparent reason on occasion, i shorted it to ground and then it magically worked again.

I think i need to switchable map like the Scoobies Valet mode.
 
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Jan 8, 2007
2,958
1
Wiltshire
Yeah it's something I need to bite the bullet with and change and the AEM kit sounds like the best choice

Switchable maps would be awesome
 
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