Author Topic: S3 225 Remap?  (Read 25447 times)

Offline Yohan

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Re: S3 225 Remap?
« Reply #50 on: 13 September 2011, 20:24 »
Maybe the combination of brand new poly bushes everywhere and the SMF are causing phantom knock?

Fingers crossed.

Would water injection help or just hide the problem?
« Last Edit: 13 September 2011, 20:50 by Yohan »

Offline RTechUK

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Re: S3 225 Remap?
« Reply #51 on: 13 September 2011, 21:06 »
Maybe the combination of brand new poly bushes everywhere and the SMF are causing phantom knock?

Fingers crossed.

Would water injection help or just hide the problem?


WMI would mask the fault not the way forward imo( but once done its the way to got)  If I we cannot get the timing up we will have to dial some the boost out as the substained EGTs will be too high as all the effort would be on the turbo to make the power.  Even with the stock map on with the BP super unleaded I am seeing pull of 6kw?

Already wrote the linear DBW settings and the raised the  4x idle upto 900rpm once at opt engine temp as requested, plus found a map related to load based on idle rpm with the clutch pressed in, which when finished should make the solid fly wheel set up 100% times better when pulling off.




Nick




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Offline Yohan

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Re: S3 225 Remap?
« Reply #52 on: 13 September 2011, 21:26 »
Maybe the combination of brand new poly bushes everywhere and the SMF are causing phantom knock?

Fingers crossed.

Would water injection help or just hide the problem?


WMI would mask the fault not the way forward imo( but once done its the way to got)  If I we cannot get the timing up we will have to dial some the boost out as the substained EGTs will be too high as all the effort would be on the turbo to make the power.  Even with the stock map on with the BP super unleaded I am seeing pull of 6kw?

Already wrote the linear DBW settings and the raised the  4x idle upto 900rpm once at opt engine temp as requested, plus found a map related to load based on idle rpm with the clutch pressed in, which when finished should make the solid fly wheel set up 100% times better when pulling off.

Nick


Thanks Nick, really appreciate all the work you and the guys are putting in to this :)

900rpm should make the idle much nicer and look forward to the Linear DBW.

The catch can wont have filled up again ruining another set of plugs? Like you say if it's pulling on BP Ultimate then something can't be right. I can only afford to run V-Power daily though :(

Any luck with a replacement slipring/steering angle sensor?

Would you like to keep it another week? I don't mind, just so I know so I can change the hotel booking.

John

Offline RTechUK

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Re: S3 225 Remap?
« Reply #53 on: 13 September 2011, 21:34 »
Not had chance to do any of the extras yet.. stacked up to the eye balls..lol

Catch can is being vented to atmos at the moment, I will re-read the spark plugs and get the decats on the head and take it from there, I am trying to find a way of testing the VVT while is running under load.

It will be 100% when I have finished... :wink:



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Offline Yohan

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Re: S3 225 Remap?
« Reply #54 on: 13 September 2011, 21:37 »
Not had chance to do any of the extras yet.. stacked up to the eye balls..lol

Catch can is being vented to atmos at the moment, I will re-read the spark plugs and get the decats on the head and take it from there, I am trying to find a way of testing the VVT while is running under load.

It will be 100% when I have finished... :wink:

No problem Nick, I know how busy you guys are!

Good idea venting the can, rules it out completely.

Is the sh!tty I/C piping holding up ok?

As for 100%, can't wait! It will take as long as it takes :)

This is the reason I took the time to drive from Aberdeen down to you guys  :wink:

Offline RTechUK

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Re: S3 225 Remap?
« Reply #55 on: 13 September 2011, 21:42 »
Rob smoke tested it the other day and was spot on, (just a weep around the lower TIP where is meets the comp housing)


What fuel pump are you using?  I will check flow rate and rail pressure if I dont get any where, its running 11.9:1 at the top end.

Nick



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Offline Yohan

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Re: S3 225 Remap?
« Reply #56 on: 13 September 2011, 21:45 »
Rob smoke tested it the other day and was spot on, (just a weep around the lower TIP where is meets the comp housing)


What fuel pump are you using?  I will check flow rate and rail pressure if I dont get any where, its running 11.9:1 at the top end.

Nick

Well this was something I also thought about.

It's the standard 2.8 V6 fuel pump.

Should it have a S3 or LCR pump?

edit - No idea when the filter was last done Nick.... car has done a sh!t load of miles.
« Last Edit: 13 September 2011, 21:48 by Yohan »

Offline RTechUK

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Re: S3 225 Remap?
« Reply #57 on: 13 September 2011, 21:59 »
Leave it with me I will got right back to basics and get my head around it. :-)



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Offline Yohan

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Re: S3 225 Remap?
« Reply #58 on: 13 September 2011, 22:01 »
Leave it with me I will got right back to basics and get my head around it. :-)

Cheers Nick, catch you later :)

Offline Yohan

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Re: S3 225 Remap?
« Reply #59 on: 14 September 2011, 11:49 »
I've been thinking more about this timing issue.

http://ngksparkplugs.com/tech_support/spark_plugs/p4.asp?mode=nml

"Ignition Timing

Advancing ignition timing by 10° will cause the spark plug tip temperature to increase by approximately 70° to 100°C.
 A colder heat range spark plug may be necessary if the ignition timing has been advanced to near the knock level.  Higher cylinder temperatures near the knock level will bring the spark plug firing end temperature closer to the pre-ignition range."

Would a colder set of plugs help?
« Last Edit: 14 September 2011, 11:58 by Yohan »