Certainly! Furthermore, it is recommended that the battery be disconnected before the ECUs are swapped over.Originally posted by Jason (Mr Torque Steer):
[qb] It wouldn't be a good idea to switch ECU's while you were driving, it would probably cause major engine damage I'd imagine. [/qb][/b]
Apart from the bad weather consideration the main reason I have my stage one mod switchable is that my better half drives the car occasionally and she doesn't always have both hands on the wheel when she hits the throttle.Originally posted by David Taylor:
[qb]I don't understand why you would want to do that? Why not just be lighter on the loud pedal? [/qb][/b]
My insurer is aware of my stage one mod and I did my 'switchable' mod under guidance from my local Saab main dealer - they helped with circuit diagrams & an explanation of how the system worked - they liked the idea & though it could be useful in certain circumstances. Infact they liked it so much they even gave me the dashboard switch that I use to activate the system for free.Originally posted by David Taylor:
[qb] Has anyone with an electrical or otherwise modified system considered informing their insurance company who will no doubt look upon such bodging as a greater risk. They'll take any opportunity you throw to whack up the premium and suggesting that "but it made the car safer for my wife" or "it works better for bad weather" will no doubt stir little positive emotion in the average insurer.
This is the difference. Same effect achieved by different approach to what the question is asking. Switching between two ECUs is more complex than black&white Saab's approach - which does seem pretty good to meOriginally posted by black&whitesaab:
[qb]It would be difficult to switch between two different ECU's but I have a simple modification fited to my stage 1 9000.
The power supply to the APC solenoid is switchable so, when the button is depressed I get full stage 1 power, 235bhp
With the button switched off there is no power supply to the APC solenoid so I only get base boost & 170 bhp.
The block of wood won't work on my car as it goes more quickly at part throttle than at full throttle! I have the rolling road graphs to prove it tooOriginally posted by David Taylor:
[qb]Seriously guys, a block of wood behind the accelerator *really* will work too!