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depends on what kind of remap it allows you to do :D
have a word with the company you are going to remap it with and ask them for a rough idea :D
 

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Unless your engine and its components are not in perfect health (which by the sounds of your issues, your's are not), a remap would not be 'effective' and will increase the fuel consumption.
 

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mate i tune cars - and i'll let you know something...

your car cannot be remapped; it's too old. post '96 BMW's can be remapped, yours on the other hand will have to be 'chipped'. this involves removing the ECU, taking out the EEPROM chip and using a chip reader to obtain the information from your vehicle (fuel maps, ignition timing/advance, vanos, boost maps (if it's a turbo) and so forth). once that data has been gathered, the file can be modified and re-written on a NEW chip that will go back into your ecu. that's the only headache with older cars; it takes a bit longer, but the result is still the same.

if you drive the car 'nicely' - you'll definitely notice an increase in MPG - but, as somebody already suggested, it might be an idea to check your car on a diagnostic machine because if things like your lambda sensors are going duff, you'll be wasting petrol if the car isn't running nicely!

hope that helps - pm me if you need help, i've gotta go fit some angel eyes *grunts*


Nick
 

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would the lambda sensor make it run rich,even if you had a good induction air supply.
 
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