B5 A4 Quattro With V8 32 / 40V Swaps - Performance And Gas Mileage.

[Nollywood]

I thought I'd put this out here.

I'm curious to see what those with B5 V8 swaps get out of their cars.

Gas mileage (indicated).
Gas mileage (logged).

Performance. Is it what you expected? Are you satisfied, or disappointed? Do you crave more?

If anyone has measured 0-60mph, or quarter mile times, it'll be nice to share too. Any pulls against a buddy's car (what car?) What gears were used?

If anyone has had their car on a dyno too, awesome. Please, share specs too.

Engine type:

4.2 V8 32V from D2 A8 - 300hp.
4.2 V8 32V from D2 S8 - 340hp (Euro).
4.2 V8 40V from D2 A8 - 310hp.
4.2 V8 40V from C5 A6 - 310hp.
4.2 V8 40V from C5 S6 - 340hp.
4.2 V8 40V from D2 S8 - 360hp.
4.2 V8 40V from D3 A8 - 335hp.
4.2 V8 40V from B6 S4 - 344hp.

Mods:

ECU / tune.
Air intake / filter.
Exhaust / CATS.
Deletes.

Transmission type:

01A 5-speed from 1.8T.
01A 5-speed from 2.8.
01E 6-speed from B5 S4.
01E 6-speed from B5 2.5 TDI.
01E 6-speed from B6 3.0.

Shared experiences here will help us work out if our cars are performing as they should, or if the engines have more to give.

Thanks all.

[revolution337]

I'm have a 2001 B5 A4 swapped with a 40v from a C5 A6. SAI delete, come filter intake, custom 93 octane tune from JHM, milltek catless downpipes. Mated to an 01A 1.8 trans. Never dynoed it, but butt dyno feels plenty fast to me. Best MPG I got was 23 on the highway. Best time at the 1/4 mile was 13.1 at 102 mph. Beat a bolt on B5 S4 in the 1/4 mile and from a 30-100 roll race. Overall I'm very happy.

[Nollywood]

Not bad. I'm still breaking in my clutch, so I haven't run WOT as yet.

[redline380]

Best time at the 1/4 mile was 13.1 at 102 mph.

Very solid time, and I am sure the tranny ratios are not helping you any.

[Nollywood]

Due to breaking in my clutch, no full data yet. I'll fill things in as time goes on.

Base car: 2000 A4 2.8 30V Quattro Sport, 5MT with ESP.
Engine: 4.2 V8 40V, from 2005 A8 D3 Quattro, 335hp with dual-stage intake as D2 S8.
Intake: OEM D3 A8 4.2 airbox, shortened 23mm to fit B5 frame rail, 60mm K&N cone filter inside, standard SAI.
Exhaust: B6 S4 6MT de-CAT downpipes, mated to unbranded B5 S6 stainless CAT-back.
Management: New D2 S8 ECU, factory tune.
Transmission: 01E 6-speed gearbox, rebuilt in 2012 with A6 2.5 TDI 5th and 6th gears.

Power: ---hp.
Torque: ---Nm.
Performance: 0-60mph -.- secs / quarter mile --.- secs / max --- mph / km/h
Indicated mpg: 16.2mpg city / --.-mpg highway.
Actual mpg: --.-mpg city / --.-mpg highway.
Indicated range: --- miles.
Achieved range: --- miles.