Wideband lambda control, also known as wideband regulation is when a wideband’s signal is used to control closed loop fueling. M4.3/M4.4 equipped cars, such as the 850 or 1998 V70, C70, XC70, S70, came from the factory equipped with a narrowband oxygen sensor. The purpose of the oxygen sensor is […]
The short story – upgrading your MAF housing isn’t about reducing a restriction in the intake system – it is done to allow the ECU to register a greater amount of total airflow so that the car can be tuned accurately. The long story – the MAF uses a heated […]
The factory fuel pump wiring on P80 Volvos is insufficient at providing enough power for upgraded fuel pumps. As counter intuitive as it may seem, sometimes upgrading a fuel pump without upgrading the wiring can actually decrease fuel flow. This is because larger pumps require more power to flow the […]
The purchase of a ‘Tune It Yourself’ ECU comes with support only for hardware. At the time of purchase a minimally modified base tune will be emailed to you, as well as flashed to the ECU prior to shipment. This base tune is a factory 607 or 608 ‘rev5’ tune, […]
Datalogging is the keystone to high performance engine tuning. From the factory, there is only one practical way to datalog information from the ECU; via OBDII. Unfortunately, from a tuning standpoint, OBDII is woefully inadequate at datalogging. Due to the communication overhead involved in the OBDII protocol, only a meager 3 parameters at less […]
Iridium, copper, platinum, multi-electrode, single-electrode, plutonium, space dust! The list of spark plug options at first glance can be daunting. Many manufacturers claim their spark plugs will boost performance and increase mileage. Online preachers will swear that their $20 quad iridium tip plugs will yield 21.256 extra HP. The truth […]
The custom datalogging routine programmed into a VAST ECU outputs 45 parameters from the ECU at 20-25 samples a second. 26 of these parameters are available for viewing in the Data Dash. This is a view of the ‘Data Dash’ available while datalogging. The Data Dash provides a graphical view of […]
This is a collection of turbo maps with curves mapped for whiteblock engines. Engine size is assumed to be 2.3L, although there won’t be much of a difference for 2.4L and 2.5L engines. The lines drawn in the maps below indicate the efficiency area in which the turbo would operate […]
