Project B7 420-R - 4.2 V8 40V BiTurbo Content

Post any info regarding parts for conversion and swaps.
and any posts regarding swaps help.

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Nollywood
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Re: Project B7 420-R - 4.2 V8 40V BiTurbo Content

Post by Nollywood »

One of the issues encountered by C5 RS6 owners converting their cars to manual, is coding.

By this, I mean coding the ECU to have the characteristics of a manual. This allows the idle to be lower, prevents “rev hang” when clutching down for gearshifts, and generally makes drivability smooth. It also permits cruise control to function.

As the C5 RS6 had no manual option, the ECU has no option to be soft coded to control the engine as a manual. It will also trigger the ABS and ESP warnings, they will be non functional as a result. As the ECU will be looking for the absent TCU in the original Tiptronic car, a CEL will be triggered, putting the ECU in limp mode.

I am avoiding this, by running 2 x B6 1.8T 190 (BEX) ECU’s. And a custom wiring harness, based loosely on 2 B6 1.8T items. The B6 ECU’s of course will be 100% compatible with the B6 ABS module, and more importantly, the B7 RS4 instrument cluster can be modified to work. The C5 RS6 ECU would be less compatible here.


2000 Audi B5 420-R, Pelican Blue:Work In Progress.
2000 Audi B5 420-R DTM, Santorin Blue: Work In Progress.

Nollywood
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Re: Project B7 420-R - 4.2 V8 40V BiTurbo Content

Post by Nollywood »

It’s almost unheard of for a Seat Exeo to make big engine numbers, but that’s exactly what’s going to happen here.

The Exeo was available with gasoline motors, but I haven’t seen any here in the UK. So the first item to come out of the car, besides the engine, with be certain wiring harnesses:

Engine bay.
Central distribution harness (dash).
Left kick panel harness.
Right kick panel harness.
Rear section harness.

The only harnesses that will remain, that have nothing to do with the car being an oil-burner or gasser, are:

Left front door harness.
Right front door harness.
Left rear door harness.
Right rear door harness.
Left lamp / license plate lamp harness.
Right lamp harness / rear wash / wipe harness.
Ceiling wiring harness.
Tailgate wiring harness.

It’s possible to retain all the wiring, and add the gasoline-specific wires - fuel pump relay, fuel pump etc, but I won’t this build to be OEM, with little or no splicing of wires.

All the removed harnesses will be replaced with the wiring from a 2007 B7 2.0T gasoline.
2000 Audi B5 420-R, Pelican Blue:Work In Progress.
2000 Audi B5 420-R DTM, Santorin Blue: Work In Progress.

Nollywood
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Re: Project B7 420-R - 4.2 V8 40V BiTurbo Content

Post by Nollywood »

Complete B7 RS4 Avant charcoal head lining, with associated pillar, sun visors, grab handles etc. The driver’s visor has the Audi garage opener, which is great.

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2000 Audi B5 420-R, Pelican Blue:Work In Progress.
2000 Audi B5 420-R DTM, Santorin Blue: Work In Progress.

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ChrisJC
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Re: Project B7 420-R - 4.2 V8 40V BiTurbo Content

Post by ChrisJC »

Nice. Keep it coming...
Chris.
--
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8

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