G'day everyone,

As you all have read, I have been busy this year researching a replacement to the Jaycar Voltage Modifier Kit, in the form of a kit, or better yet, already made.

I have found several options that look all fancy in the $500-$600 region that can set a map based on rpm pulse input to set only 16 load sites across the rpm range, with 16 points of adjustment.
An overpriced package that doesn't do the job for what we need it for (MAF and MAP Sensors).

I have put together a kit, the next in line from the very popular one that was available at Jaycar up until 2015 when it was discontinued. The same guy that designed the old kit, designed this new and improved model, however, it didn't make it onto Jaycar shelves. Possibly for liability reasons. Not too sure.

This kit has been a few months in the making, with countless hours going through tech sheets, comparing prices among wholesalers, getting the last of the remaining stocks in the world to get the build price down to pass the savings on. Can't just walk into Jaycar to get this kit together, they don't carry much variety of stock, and they sell most components with 30-400% mark-up. I have a limited run of 50 kits available at this stage. With the shortage of components around the world, kitting has been quite difficult.

This kit has 256 fully programmable levels, called load sites. When tuning the unit, you set your highest voltage and lowest voltage into the circuit, and then this spread is used to calculate your load sites. Depending on the custom configuration needed by the application, by modifying electrical components, the circuit can be tuned to spread the 256 load sites between ±5V or as low as ±0.5V. I think for our MAF Sensor, we'll be needing a resolution of around 4V, and there's a setup that's tailored for that application.

Each of the 256 load sites can be adjusted by 255 points, being -127,0,+127. These numbers alter the output at each load site, and are worked out by dividing the designed circuit voltage spread by 256. For example ±5V has a 10V voltage spread. Spread that out over 256 output adjustment points, is 10 divided by 256, which is 0.039V, or 39mV.

There's 9 different custom configurations for the circuit to allow for the finest possible resolution for the application. Suitable applications to modify 5V sensor circuits include, Mass Air Flow (MAF)(on Air intake), Manifold Absolute Pressure (MAP)(on intercooler), Throttle Position Sensor (TPS), Accelerometer for TCS, Oxygen Sensors, correcting discrepancies between boost gauge and MAP ECU boost readings, and so on.

I have the kit fully assembled, which includes; testing components prior to installation, customising the circuit for your application, commissioning and calibrating (but not programmed) on eBay for $450, shipping for free in Australia, and $10 postage worldwide. eBay take their 10%, so I have had to put the kit up a bit to cover costs. READ TO THE END FOR A DISCOUNT
Check out the eBay listing built kit. https://www.ebay.com.au/itm/294924080047

I am aiming to have the kit listed on eBay as components shortly, for around $250, free postage to Australia, $10 postage worldwide.

Kit assembly is around 7 hours for over 100 components, and you will need;
-Good quality digital soldering iron for sensitive electrical components
-Laboratory power supply for commissioning and tuning
-Digital Multimeter
-Good understanding of assembling components in the correct orientation
-Hand tools and power tools
-3rd hand, tweezers, high quality side cutters

For my friends here on the forum, send me a message to pay by an invoice on email to receive a discount;
-$400 for the fully built kit inc free postage, and an additional $10 worldwide
-$220 for the unassembled kit with detailed instructions, free postage, additional $10 worldwide

Pickup welcome after payment of goods, or cash on pickup.

Located in Hillcrest, QLD
Trading as Gollan Services
ABN 50 463 839 864

Lionel