TechnoMotive EPROM Modification Restrictions

TECHNOMOTIVE IS NOT RESPONSIBLE FOR ANY DAMAGE THAT MIGHT OCCUR DUE TO THE USE OR MISUSE OF THESE PERFORMANCE MODIFICATIONS. You should make sure you understand the full ramification of these mods. For example, by removing the fuel cut limit on the ECU, it is quite possible you can "lean-out" your engine and burn pistons, valves, or ring-landings. You should keep an eye on the air-fuel ratio to make certain it doesn't drop to an unsafe level and you should make sure the EGTs (exhaust gas temperatures) remain reasonable. Be sure you understand exactly how each ECU safety restriction removal affects the operation of your engine.

Some items are in developement and not currently available. Please see the Stages page for more information.

CARB and EPA notice

These modifications only affect the car in "high-throttle" situations. Typically, exemptions are granted for modifications that only occur during "high-throttle" situations. In the case of the gauge or the shift light mods, smog related items are not affected at all. One would think that full smog testing of such modifications would not be necessary, but until we get the full green light on an exemption, we must say the following.

For off-road use only in California and other states that have adopted CARB (California Air Resources Board) or CARB-like rules. Not for use on any street-driven vehicle in these areas.

The gritty details

The EPROM modifications are currently only available for those ECUs that already have an external EPROM. To find out if your ECU qualifies, you can follow the instructions for the first generation and second generation DSMs elsewhere on this site.

Please note that we can customize any of the RPM numbers to fit your needs, or implement any custom combination of the items in the stages.

All of the EPROM modifications (aside from the clutch cut) use already existing equipment in your car. Your car will look absolutely stock to anyone else, even the dealer. None of the above mods will impact the use of any scan tools by the dealership (except for the security mod - the dealer will have to start your engine to run the scan tool! - but if you are worried about it, you can always pop your old stock EPROM back in for trips to the dealer).

These modifications are available on both the 1st and 2nd generation ECUs (some 2nd gen stuff is still in betatest). Both generations have been tested at the dragstrip.

These modifications have only been tested on turbo cars so far. We see no reason why most of these mods (except those specifically aimed at turbos) shouldn't work on the non-turbo DSMs. However, we will require at least one betatest iteration to insure there are no problems. If you are interested in being a non-turbo betatest site (2.0l and 1.8l engines), please let us know.

This performance modification involves removing your stock EPROM and replacing it with a high-quality, high-grip socket and a new EPROM with your choice of options. You will have to send us your ECU in order for us to socket it. This means your car will be unusable until we ship your ECU back. Please keep this in mind. If you want to minimize downtime, you can socket the ECU yourself however, we offer no discount, as we do not recommend doing this yourself unless you are an expert.