W3STY's Progress Thread

What colour S3 Avus for the Track?

  • Porsche Guards Red

    Votes: 43 57.3%

  • Kawasaki Green

    Votes: 32 42.7%
  • Total voters
    75
StaceyS3 said:
Good stuff Fred now that's service ;) friends

If your cruising about racking some miles up your more than welcome to pop to mine :)
Click to expand...

Thanks for the offer mate. I have the engine bed in now so I'm not overly fussed on racking up miles. I need to see what the furling is doing with the 4 bar FPR on. It might be a bi iffy so I don want to be to far from home just in case.
 
Just read the fuel adaption figures before I fit the 4bar FPR clear the codes then go for some logging.

3barFPR.jpg
 
Rosso TT said:
Hey Westy, what about fitting slightly bigger injectors and scale them with unisettings?
Yesterday i stumbled across a vwvortex thread that explain how to convert to E85 fuel.
What other knowledgeable people think of this method?
Here's the link VWVortex.com - DIY: a complete guide to convert your chipped 1.8T to run on E85 FlexFuel ethanol (in 4 easy steps)
Click to expand...


Is that guide seriously suggesting fitting bigger injectors and running e85 by just tweaking unisettings?! That's surely just asking for trouble.. I can't believe anyone recommends that's an acceptable way of doing things... Am I wrong? Is unisettings that good and reliable?
 
as suspected, the long term trim is pulling the added fueling of the 4bar FPR, but seeing as at WOT it relies on the maps rather than measured values, it appears to made a difference the the IDC's
 
Did a couple of AFR graphs for comparison between the 3 bar FPR and the 4 bar one:


3BAR
3Bar-FPR-AFR-Graph.jpg


4BAR
4Bar-FPR-AFR-Graph.jpg


As you can see, the 4 bar is making the car run slightly richer on boost but at least the injectors aren't being maxed out. I'm happy with the fuelling going on all the above figures and I did go for a bit of a blast this morning and the car feels strong.
 
Westy said:
Did a couple of AFR graphs for comparison between the 3 bar FPR and the 4 bar one:


3BAR
3Bar-FPR-AFR-Graph.jpg


4BAR
4Bar-FPR-AFR-Graph.jpg


As you can see, the 4 bar is making the car run slightly richer on boost but at least the injectors aren't being maxed out. I'm happy with the fuelling going on all the above figures and I did go for a bit of a blast this morning and the car feels strong.
Click to expand...

What I don't understand is why requested changes from 3-4 bar? The requested value is taken from lamfa it's a value table thus it should request the same regardless, it's not like it knows you changed fpr. Only reason it might be different is if load is different but then the graphs aren't comparable!
 
beachbuggy said:
What I don't understand is why requested changes from 3-4 bar? The requested value is taken from lamfa it's a value table thus it should request the same regardless, it's not like it knows you changed fpr. Only reason it might be different is if load is different but then the graphs aren't comparable!
Click to expand...

The graphs are made from "Lambda Bank1 specified and actual" block 031 so maybe it's slightly different to the map actually requesting the fuel :think:

All logs were done on the same stretch of road in 3rd gear so load and conditions will all be similar.
 
beachbuggy said:
What I don't understand is why requested changes from 3-4 bar? The requested value is taken from lamfa it's a value table thus it should request the same regardless, it's not like it knows you changed fpr. Only reason it might be different is if load is different but then the graphs aren't comparable!
Click to expand...

Fuelling doesn't always come from LAMFA... LAMFA is used under normal conditions but BTS maps and knock maps come into play should circumstances arise... any of these could be potentially throwing the logged AFR out depending on whats happening in the engine... the ECU calculates lambda request based on these conditions and applies the lowest requested AFR...

Not overly conclusive tbh... would be better to assess this from the actual logs with relevant blocks to see what else was happening at the time... egt's, lambda live adjustment etc...

<tuffty/>
 
Blocks 001 (lambda control), 031 (Lamda request/actual), 112 (EGT)

Block 002 will give you injector on time...

There is also an enrichment factor for the calculated EGT's which (from what I understand) is measured from the heater temp of the Lambda probe... this is typically set to 820 deg on the S3 and is where the ECU starts to use enrichment tables beyond LAMFA... this (I think) is on block 034...

This may be of use too
http://www.ross-tech.com/vag-com/m_blocks/

<tuffty/>
 
Noticed today that my exhaust is slightly blowing by the de-cat where I had taken it apart. I've got to the stage now where I think it's time to get a custom cat back system.

I've only had one quote so far and that was from MIJ near Brum for £395 for a 3" system. What seems to be the going rate for a custom 3" system and can anyone recommend anywhere in the south east?
 
Shame your not around my end mate, i paid £500ish for my xspower dp n decat fitted along with a custom 3" system all the way through with a oval tip, looks awesome and sounds amazing but ismt over kill :).
 
MIJ used to be good but seems they've slipped. Could be a test mule for piper? Just means you'll have to take a trip to Folkestone but the system is free I think or atleast very cheap. Bit far up this way although not too far once you move. BTB in daventry. Bit more money perhaps but a damn good quality system. Just look at their site lol
 
Because it'd be a development system they haven't done before. They don't do anything Audi currently according to their site. Unit18 developed a few systems with piper recently, that's how I know. The 8l s3 scene is pretty big, just look at the amount of people you see posting up with new cars. Worth an email perhaps. Looking around earlier all the systems I found were over 500quid so if they could do better than that they'd be onto a winner.
 
Jason.s said:
Because it'd be a development system they haven't done before. They don't do anything Audi currently according to their site. Unit18 developed a few systems with piper recently, that's how I know. The 8l s3 scene is pretty big, just look at the amount of people you see posting up with new cars. Worth an email perhaps. Looking around earlier all the systems I found were over 500quid so if they could do better than that they'd be onto a winner.
Click to expand...

So you don't know for definite that they will do a cheap system lol. I've got a couple of local places to get quotes from first but I might bang an email to piper just to see.
 
I pinged over a nice email to Piper to see what they think. I doubt they'll do anything for free but it's worth a go to try and get a cheap system as a guinea pig car. I'll let you all know what they say.
 
i think I need a 3'' zorst as well these days.

It's all well and good having an ultra quiet car, but I fancy a bit more sound if I'm honest! It only records 86dB on the sound checks at trackdays!
 
Have messaged Ali at the unit to find out so I'll post up what he comes back with.
 
Prawn said:
i think I need a 3'' zorst as well these days.

It's all well and good having an ultra quiet car, but I fancy a bit more sound if I'm honest! It only records 86dB on the sound checks at trackdays!
Click to expand...

Mines 3" (fnarr!) and is pretty quiet... well... until I open her up a bit :)

<tuffty/>
 
Just need a smaller backbox or cut it open and pull some of the baffle out. My jetex is too quiet for my liking. The backbox is huge and it's the only box in the system. Expect mines about the same volume as prawns just about. Sounds nice around the mid range but up top is mainly engine sound and down low there's hardly anything. I'm used to asbo spec systems lol.
 
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