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 measure a greater amount of total airflow, so that the engine 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 […]
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 […]
