Author: zilog357

This document is about installing a performance chip on a 1993 – 1995 BMW 325i or 525i ECU (Motronic DME).   E36 Model   First of all, you will need to locate the DME and uninstall it from the car.…

While this covers installing a chip on the USDM version (US Domestic Market) Honda P28 ECM, the procedure is the same for almost all 1992-1995 (OBD-I) Civic and Integra ECMs. The circuits of all of them are based on the…

What is it? The Honda VTEC system is a dynamic valve timing adjustment, mounted on the engine head. It dynamically adjusts the exhaust valves’ timing by means of oil pressure. This oil pressure is controlled at the same time by…

  What are those infamous IAT resistor mods and performance modules, and how do they compare with real EPROM performance chips? Need a guide to try it out by yourself? Find out here… Some background The ECM can do such…

Racing or performance chips: What are they?       EPROM Tuning Chips The chips referred to when talking about performance chips are EPROM memory chips or Flash EPROM memory chips which contain a program for running the engine (inside…

Recently, we have seen a new racing performance scam: the “regulator performance chip”. What is this new type of “performance part”? I have read some auctions and sales pages listing a “Performance Module” which is nothing more than a voltage…

Have you ever wondered what the Octane Rating of Gasoline is? Every time we go to a gas pump to fill our car’s tank, we always have the choice of what octane rating we wish to put in. More than…

The following process will cover the DOHC engine of the 1993-1995 Honda Prelude (OBD-I) 1 – With the engine cold, remove the upper timing belt cover, the valve cover, the spark plugs, and the distributor cap. Exhaust and intake valves…