"Welcome to the Lotus Esprit S4 & S4S Chip Page"

On this page you will find custom performance chips for the Lotus Esprit S4 and S4S GM ECM that have been successfully installed with no ill effects.

We cannot accept any responsibility for the results good or otherwise, for  performance modifications found on this page, that have been installed and/or performed by anyone other than us.

One warning, the Lotus Esprit Gearbox is renowned for 2nd. gear failure and damaged half shafts etc., if greatly abused.   We do  NOT support  "dropping the clutch" at full power under any circumstances.

Occasionally we do get used performance chips, and offer them for sale. They are all tested, fully functional and come complete with a brand new 28 pin low profile chip socket to fit the Lotus' stock MEMCAL. We also buy Lotus Esprit, S4, S4S, X180R etc. performance chips and MEMCALS.  Please Email us for more details. If you are looking for a particular chip, please let us know.
                           

We are currently looking for #7 and any Rev 2 Chip, Please Email us if you have any for sale or trade.