- Will give stock 347/(285*)HP but is more refined compared to the old SE code
- This is a good choice for SE-owners who want to keep stock performance but benefit from the more refined code
(* = in overboost mode)

- Will give about 290HP, but still has the 3k-stumble and the well known A/C-on-off-idle-problem
- Is suited as a performance upgrade for all SE/S4, gives more power and a bit more torque

- Will also give about 290HP and a little more torque +5% in low and midrange
- Gives very good drivability and is a very good and safe performance upgrade for all SE/S4

- Is based on the improved S4s MK5 code
- Max. boost pressure 1.1 bar
- New Version 2.0 gives better boost control in high boost regions conditions
- If you bought the previous version of the chip, an upgrade is available at reduced price (98 Euros), you will receive a brand new chip.

- Is based on the improved S4s Mk5 code
- Max. boost pressure 1.2 bar
- New Version 2.0 gives better boost control in high boost regions conditions
- If you bought the previous version of the chip, an upgrade is available at reduced price (98 Euros), you will receive a brand new chip.

- Special code based on the improved S4s-Mk5 code (#2)
- Max. boost up to 1.25 bar
- Raised redline

- Special code based on the S4s-Mk5 or Sport300
- More radical timing and fuelling than the red one
- Max. boost up to 1.25 bar
- Raised redline
- Best suited to engines with bigger injectors and/or higher fuel pressure and bigger turbo (= Sport300 setup)

Can't take a decision as to what chip you like best to run in your Esprit ? Ever dreamed of having them all and be able to change them instantly ?
Then this product is for you !! :o)
It is a switch board that contains several (eight) different programs.
Once installed, it will let you select your favorite chip most conveniently, just by using a small remote control placed in the cockpit, simplicity itself.
The remote control features a display that lets you know what chip you are using at any given time.
The Switch board is simply plugged into the ECU. Then, the remote control, with it's 2 meter long ribbon cable, is routed into the cockpit.
 
The switch comes fully programmed, ready to use, with the following P.U.K. chips:
 
0) "grand ma" program
1) Original Lotus S4s-MK5-code
2) Improved S4s-MK5-code with the 3k stumble reduced
3) High-Torque-S4s-code
4) High-Performance code 310HP
5) High-Performance code 330HP
6) Red-Race-code
7) Blue race code


Mode '0' ("Grand Ma") limits turbo boost to 0.65 Bar, therefore purposefully limiting the car's performance. This is useful for when you give the keys of your beloved Esprit say to your garage (or your kids!), and are a bit anxious as to what they might do to/with your baby. This mode will limit risks and bring you peace of mind ! ;o)

Warning : although the switch actually lets you change chips literally "on the fly", we would like to remind you that like everytime a chip is changed (generally speaking) or the ECU reset, said ECU needs to "re-learn" the engine, meaning optimum performance will not be reached until a short bedding-in period (30 miles) is completed.
So it is more suited to long term periods, say you switch to mode 6 before going on the track, then switch to mode 5 for road use in summer when roads are dry and warm etc, then switch to mode 2 for road use under wet or otherwise not ideal/"tricky" weather, then switch to mode 0 before dropping the car to the garage, etc.
If you wish to be able to increase performance for short periods, say for the odd 10 car overtaking challenge, then back to normal performance, we suggest the use of our Electronic Variable Boost Controller, which is designed to answer this kind of situations.

Click to enlarge

With this PUK-Chip-adapter the installation of a new chip is just a piece of
cake. You do NOT need to

- open the original MemCal
- no desoldering of the original Chip
- no installation of a chip socket

You just have to put this new PUK-Chip-adapter between the ECU-connector and
the MemCal. When it is popped-in the new chip will be active.

If you remove the PUK-Chip-adapter, the original/old chip inside the MemCal
will be active again.

Click to enlarge

If none of the chips listed on this page suit your particular application / engine set-up, I can develop a chip to match your specific requirements.
Based on either the SE, S4, S4s MK5 or improved Mk5, S300 or GT3 code, all constants and parameters, values and tables can be changed and adapted:

- Ignition
- Fuel
- Boost
- Overboost
- Correction tables
- Idle
- Redline rpm...
- ...and many more...

- Just supply me with a detailed description of your current engine setup and your performance wishes
- Chip comes with a comprehensive 11-page print out detailing its content, tables, parameters etc...
- Development takes only a couple of days

- Saving the old code
- Removing of the "old" chip
- Installation of the chip socket (for easy future chip swap ;o)
- Installation of the chip itself
-> I need the Mem-Cal or the complete ECU for doing this job, delivery time 1 day !!!

- Saving the old program
- Flashing the old chip
- Reprogramming the chip with the new code
-> I need the Mem-Cal or the complete ECU for doing this job, delivery time 1 day !!!

A discount is offered to people who already own a PUK chip and don't want to use their old chip anymore: 98,- Euros plus the difference in price between the chip you want and the one you already have. That means that if you currently have chip #4 or above, you only pay 98 Euros. You must return your old chip to us by post, and upon reception, we will promptly send you the new chip :-)