"There's never an ultimate car. It's only what can be best for today and then we try to make it better." Dr. Porsche. Porsche continued developing the 911 for more than 30 years. SunSpeed have the same long term dedication as Porsche for our Honda-Elise conversion.
The SunSpeed Honda-Elise installation is DIY for competent automotive technicians. It is strongly recommended that any one attempting the installation be familiar with both the Elise and the Honda sides. We recommend that you have both the Elise workshop manuals and the Honda workshop manual and the electrical ETM. The technical information for US version Honda can be obtained from Helm Inc. We can also recommend experienced technicians for Installation.
For ANY technical issues requiring information please send detailed description to:
Weight - Always The question. Here's some numbers measured @ Sun Speed: Weight
Electrical - S1 speedometer: all interconnect looms / harness after SN 122 (June 2007) are Rev3 Speedometer picks up signal from the Honda power train, not the Lotus wheel sensor. Owners requiring this revision can exchange the original SunSpeed loom for Rev3 for nominal cost.
Electrical - S1 speedometer: from January 2008 available option to calibrate the speedometer signal to the instrument*
Electrical - S2 speedometer from March 2007 is driven thru the original Lotus ecu and therefore retained* Supplemental instructions available.
Electrical - S2 temperature gauge from March 2007 is taken thru the original Lotus ecu and therefore retained* Supplement available.
Electrical - Check Engine / MIL light is wired to the original Lotus display at light position "BATT" If this red light is on it means to do an OBD / On Board Diagnostics check. The recommended device: OBD2 All In One.
Electrical - Honda engine grounding. Standard feature of the Honda power train to have sufficient engine grounding throughout.
Electrical - inertia switch / fuel pump cut off: All versions can retain the function* The Honda ecu will shut off the fuel if the engine is not turning. for racing applications it's drivers' option to eliminate this device.
Rear motor mount HD version available for racing
Reverse lock-out function is retained via the Honda ecu. For the correct function it's necessary to have installed the Vehicle Speed Sensor (VSS) The reverse lock-out engages above 12 mph and disengages below 9 mph in the USA version.
VSS must be installed for all applications using the stock ecu. If not installed the engine fuel will be cut off at 5,500 rpm.
MIL / Check Engine light . If the check engine light is on run diagnostics by shorting out the appropriate pins or using this diagnostic scan device OBD2 All In One will identify and trouble codes.
fuel pump - controlled by the ecu. Pump will cycle on for 2 seconds when the key is turned on.
VTEC After Burner (VAB) can be programmed to kick in above 5,500 rpm. Important to install protective panel below engine. After Burner.
Fuel pump - Sun Speed link wiring keeps the original Honda function. I.e. the fuel pump will cycle on for 2 seconds when the ignition key is turned on. If the engine is not cranking the fuel pump will shut off. this function is controlled by the Honda PCM (power train control module) / ecu.
Fuel pump - if the vehicle is stationary or the VSS is not connected the fuel will be cut off at 5,500 rpm
Fuel pump connectors - when possible, provide additional clearance for the connectors and larger access panel.
On Board Diagnostics (OBD II):
Recommended OBD II scan tool - OBD2 All In One
Check engine light / MIL - S1 version this light is wired to the display "BATT" LED.
Trouble codes - can be read by bridging the OBD II connector and counting pulses on the Check Engine LED.
cables on S2 produced after May 2004 are too big to fit the Sun Speed assembly. Customer replaced with earlier cables.
Exige - to retain the original Lotus oil cooler it's necesary to use an adapter on the Honda engine