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 Porsche Boxster S 986 - Audi 2.7 Bi-Turbo engine swap View next topic
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Escy
Knows a Bit

Car: Porsche Boxster

Joined: 12 Sep 2015
Posts: 166



PostPosted: Tue Aug 16, 2016 7:43 am Reply with quoteBack to top

I think it would be a lot more work to wire a standalone up plus I don't want to drop another grand on the build if the standard ECU is capable of doing what I want.
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adzn3k
knowledgeable

Car: audi b5 s4

Joined: 22 Dec 2015
Posts: 460


Location: United Kingdom

PostPosted: Tue Aug 16, 2016 7:47 am Reply with quoteBack to top

I guess so to be honest I'm not 100% on the capabilities of the oem item. What software did you use to recode the injectors and stuff?

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Escy
Knows a Bit

Car: Porsche Boxster

Joined: 12 Sep 2015
Posts: 166



PostPosted: Wed Aug 17, 2016 1:12 pm Reply with quoteBack to top

I'm not sure, my mate did it. I've got about 4 different programs on my laptop for adjusting the map.

Could someone with VCDS do me a favour? I want to see what the values are for measuring block 062, the throttle pedal. Want to see what the values are when the pedal is up and what it goes to when it's all the way down so I can compare.
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Escy
Knows a Bit

Car: Porsche Boxster

Joined: 12 Sep 2015
Posts: 166



PostPosted: Sat Aug 20, 2016 10:31 pm Reply with quoteBack to top

Never mind, I know the correct values now.

I recruited some help on the wiring.



I finally got myself the J17 fuel pump relay, it provides the power for the lambda sensor circuits and the injectors. I had these circuits wired up on separate relays but i'm getting a fault code on the fuel pump relay as well as all the other fault codes so have decided it best to re-do it all. My mate picked this up for me from the scrappy as I didn't have the foresight to remove it from my A6.

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Noggymike
Veteran

Car: 2002 B5 RS4
Power: 430 bhp
Torque: Whatever
Engine code: BHP

Joined: 07 Oct 2012
Posts: 11728


Location: In front of you, lol'ing

PostPosted: Sun Aug 21, 2016 6:15 pm Reply with quoteBack to top

Soz to hear of all the niggles, but considering what you are attempting it must be expected.

Loving the sparky at work

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2002 B5 RS4 Noggy
1998 B5 S4 Noggy Avant, FS mid Feb 2017, PM me.
2008 BMW 118d Daily slaaaag
2000 TT 225 Roadster (on going project)
1982 UR Quattro gem in the making
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Escy
Knows a Bit

Car: Porsche Boxster

Joined: 12 Sep 2015
Posts: 166



PostPosted: Sun Aug 21, 2016 8:43 pm Reply with quoteBack to top

Problems were expected.

The Audi fuel pump relay/distribution block fitted a treat on the Porsche relay holder which has helped keep it all neat and tidy. Everything has been wired up.




I got it started. Lots of the fault codes have gone. I've still got a temperature sensor code and the throttle pedal ones but otherwise i'm just left with the ones I expected now that will be coded out. I took a little video of it running. There is an exhaust blow on the v-band from the turbo plus it's in the car port so hopefully it won't be too loud once that's all sorted.

https://youtu.be/32okgq_I2Bg

It made a bit of a mess.

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madmax2
knowledgeable

Car: S4 Noggy
Power: 360
Torque: 500

Joined: 07 Mar 2015
Posts: 302



PostPosted: Sun Aug 21, 2016 8:57 pm Reply with quoteBack to top

I'm one of your quiet readers who just wants to say this is an awesome thing you are building. I love reading your updates...its going to be mental to drive. very jealous
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BennyBoo
Expert

Car: B5 S4 Saloon
Power: Not Enough
Torque: Not Enough
Engine code: AGB

Joined: 12 Mar 2010
Posts: 5645


Location: Grimsby, UK

PostPosted: Sun Aug 21, 2016 9:13 pm Reply with quoteBack to top

Saw this on PistonHeads' Car of the Week Feature

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Slag4 Lag Monster Noggy.

In Progress:
Volvo K24-7400/Audi K24-7000 Hybrids, 2.4 heads, 2.8 Cams, RS4 Rods, External W/G's + Screamers, True Dual 2.5" straight pipes
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C J
Experienced

Car: RS4 B5
Power: 507
Torque: 741
Engine code: AZR

Joined: 16 Apr 2013
Posts: 3441


Location: Nottingham

PostPosted: Sun Aug 21, 2016 9:44 pm Reply with quoteBack to top

He's alive igor, he's aliiiiiiive!

Sorry, had to do it!

Top job!

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RnsE,Milltek,MRC Filter,034 SAI delete,034 hoses,Wagner coolers,Podi gauge,034 TFSI coil conversion,034 snub,034 rear ARB+brackets,B7 brakes,Tanoga SS,Nialls catless 3' dp's,413 pump,630's,DO water meth,MRC stage 3 with LC and FS.
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Escy
Knows a Bit

Car: Porsche Boxster

Joined: 12 Sep 2015
Posts: 166



PostPosted: Sun Aug 21, 2016 9:48 pm Reply with quoteBack to top

Thanks madmax. The Pistonheads' feature was a nice surprise, a nice boost to my enthusiasm as i'm grinding my way through the electrics.
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UrielsMachine
knowledgeable

Car: b5 RS4
Power: full
Torque: sometimes
Engine code: ***

Joined: 15 May 2009
Posts: 495



PostPosted: Sun Aug 21, 2016 11:54 pm Reply with quoteBack to top

Loving this...keep the faith.  

Jas.  

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b5 RS4 Misano Red,several enhancements.
04 allroad 4.2 V8.
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Blairz25
knowledgeable

Car: AUDI RS4 B5

Joined: 09 May 2015
Posts: 376


Location: Derbyshire

PostPosted: Tue Aug 23, 2016 4:59 pm Reply with quoteBack to top

That sounds good
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Escy
Knows a Bit

Car: Porsche Boxster

Joined: 12 Sep 2015
Posts: 166



PostPosted: Sun Sep 04, 2016 1:30 pm Reply with quoteBack to top

I've spent some more time fighting the drive-by-wire fault codes. I noticed the Audi TT uses a similar pedal sensor to the Porsche so I thought i'd try one as it also runs a Bosch ME7 ECU so there is a good chance it could work. Porsche on the left, Audi on the right.



It didn't work so I decided to get an original Audi A6 pedal, that didn't work either.



At this point, i'm stuck, the pedal sensor values are perfect, the wiring is fine, VCDS reads it no problem. Possibly a hardware fault on the ECU (i'll try it on my mates car since the immobiliser has been removed)

Although it's running i've decided i'm going to take a couple of steps back and go for standalone engine management instead of waste more time and money on this. I originally wanted to keep the Audi ECU as I thought it would be the simpler option, I had hoped that the integration into the Porsche dashboard would have been seamless since they are both on Bosch systems and built in the same year, that was naive, nothing works on the Porsche dash.

Cost was another factor in keeping the Audi ECU but since I spent 400 on a wideband datalogger, needed a separate fan controller, and other bits and pieces it was a bit of a false economy. Mapping will be easier on a standalone and I won't have to rely on my mate to do all the coding on the Audi ECU (it's a lot of work as i've changed so much around). I've wasted a load of time pissing about with the Audi ecu which is a shame but you live and learn.

I don't suppose a standalone will be plain sailing either. I need to make a decision if I try drive-by-wire throttle again or go cable.

Here is my Zeitronix datalogger installed. That's now been removed as I won't need it anymore as the ECU's i'm looking at run widebands.


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C J
Experienced

Car: RS4 B5
Power: 507
Torque: 741
Engine code: AZR

Joined: 16 Apr 2013
Posts: 3441


Location: Nottingham

PostPosted: Sun Sep 04, 2016 1:53 pm Reply with quoteBack to top

Ah what a shame.

You'd think the dbw pedal sensors would work as they're both 6 wire Bosch units. Surely there must be some way, or an ecu fault like you say.

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RnsE,Milltek,MRC Filter,034 SAI delete,034 hoses,Wagner coolers,Podi gauge,034 TFSI coil conversion,034 snub,034 rear ARB+brackets,B7 brakes,Tanoga SS,Nialls catless 3' dp's,413 pump,630's,DO water meth,MRC stage 3 with LC and FS.
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lewiswlawrence
knowledgeable

Car: S4 B5 2000 facelift
Power: >500
Torque: >500

Joined: 23 Nov 2011
Posts: 982


Location: Aberdeenshire

PostPosted: Sun Sep 04, 2016 2:56 pm Reply with quoteBack to top

Escy wrote:

I don't suppose a standalone will be plain sailing either. I need to make a decision if I try drive-by-wire throttle again or go cable.


I am sorry to hear about the setback, thanks for keeping the thread up to date. Really enjoying reading your posts.

I think if your Ecu software supports drive by wire then that is the way to go. I recently read some articles by Dave Walker (in practical performance car magazine) of Emerald ECU, extolling the benefits of drive by wire. Mostly people don't use them in aftermarket applications due to the cost/hassle of retro fitting the pedal and body control. Given that you have that done I feel it would be a shame not to use them.

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My attempt to make my ideal road car:
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