Members of the ALSC set up to sort the fact from the fantasy and with the help of Paul and Chris at Caulfield Jaguar, who generously donated their dyno for the day, we got down and dirty.

Our aim for the day was to gain standard figures on a base model, stock standard V8 and TT to establish a base line figure for the respective models. All Kw figures quoted are rear wheel Kilowatts. 

It must also be remembered that a Dynamometer reads roller speed and torque and utilizes this data to calculate power, speed, torque etc: 
The dyno is calibrated and a final drive ratio is fed into the system. For all figures on a variety of cars to remain comparable, the final drive ratio must be input into the dyno the same for each car.

The following results are from a final drive input of 2.343 except for the figures on Aaron Elliot's car which were from an input of 2.671 as this was recalled from an old file.

The results were not surprising:

The stock V8 running a standard Toyota paper air filter  - 124Kw 
A stock Twin Turbo model with standard filter also - 135Kw

Next up we fitted the stock V8 with a range of optional air filters and filters.

1. Standard airbox with Factory paper filter.
2. Standard airbox with HKS foam air filter.
3. Standard airbox with Blitz foam air filter.
4. Polished aluminium intake tube fitted with a K and N pod filter.

Click on the images to see the full size file. Most large images will open in a new window.

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As can be seen, the gains were minimal, and in most cases the standard Toyota paper element air filter out performed the other air filters. It must be noted however, that the pod unit was not encased and was breathing hot air directly from the engine bay. 
It may be presumed that if the pod was encased and drawing an abundant supply of cool air from the front of the car, that it would show significant improvement over the other 'after market' filters tested.
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Chaining Down The Beast - Aaron Elliot's V8

Various tests were done throughout the day, on different combinations of exhaust, air intakes (including Peter Scott's BFI system), and the MiNeS VX ROM ECU fitted to Robert Hayden's car. 

Unfortunately the tests on Robert car were inconclusive given a huge drop off at 5400 RPM. The car was being swamped with fuel and ran so rich that the resultant power drop was like turning off the ignition. The MiNeS equipped car was similarly placed out of the box, but delivered much stronger mid range power and was pushing up the numbers beautifully until the 5400 RPM richness issue as can be seen by the following graph. Click to see the larger version which opens in a new window.

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Michael Smith likes to have a clean car before it's dyno'd.

 
Check the number plate.
NT - Outback Australia.
Members come a long way to attend our meeting days.

Ian Wood's immaculate Twin Turbo
(Click on the image for large view).
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