The SharkTuner Alpha-N system for the Porsche 928
The SharkTuner Alpha is an additional system for the SharkTuner Mk 2. This innovative option dispenses with the need for a Mass Airflow sensor (MAF) which is normally fitted to all Porsche 928 32v cars from MY87-95. Eliminating the MAF gives great freedom in using alternative intake systems e.g. Individual throttle bodies (ITBs); custom runners etc.
ITB's give much better engine breathing than the standard 928 intake, which is very restrictive at the high ends of the power range, especially for larger engine versions such as GTS and stroker engines.
The SharkTuner Alpha also removes the major obstacle in using more radical cams in the 928 engine. The stock MAF will give completely erroneous readings when subjected to any reversion pulses from the intake due to more cam overlap. In the past this has forced tuners to use a much higher idle speed to mask the problem. Not very friendly with a 5 speed, but almost impossible with an Auto ‘box !
The system operates as an Alpha -N fuelling system. This uses a precision throttle position potentiometer giving a measurement of engine load, in combination with air temperature and atmospheric pressure sensors for the necessary air mass corrections.
The User Manual for the SharkTuner-Alpha system can be down loaded here , and read in conjunction with the SharkTuner Mk2 and PEM User Manuals on this site.
Availability & Pricing
The Sharktuner Alpha system is available now. The price is $450 USD or equivalent in Euro or GBP.
PEMs for use with S4 and later 928s available at $100 USD each.
VAT will be due on European sales.
The main SharkTuner distributor in the USA, Australasia and Far East is Jim CorenmanUnits are also available from 928 Specialists in NC
For sales to the rest of the world please contact JDSPorsche