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hhmmmm engine management came on

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Old 10 July 2014, 05:29 PM
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angel1368
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Default hhmmmm engine management came on

As title in popped on at a steady 70mph on motorway driving, havent noticed car feel any different just annoying light
Old 10 July 2014, 05:38 PM
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SAM-UK300
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do you still have a CAT? I remember when I removed mine it was fine for a while and then one day cruising at 70 the engine management light came on
Old 10 July 2014, 05:39 PM
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best bet is read the code and it will help point you in the right direction.
Old 10 July 2014, 05:54 PM
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i dont have a code reader mate, not a single cat left on it
Old 10 July 2014, 05:55 PM
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assume its been remapped since the decat?
Old 10 July 2014, 06:38 PM
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ive only just bought it and not sure what mods are done, i can see its been de cat and a big silly air filter but dont know if its remapped, bought it off a dealer so couldnt ask previous owner etc
Old 10 July 2014, 06:44 PM
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Ah, my guess would be decat without a map then, first thing to do is buy a OBD2 reader from somewhere like eBay or amazon, between £7-20 depending if you need Bluetooth or wifi (apple phones don't support Bluetooth versions) and then download an app to read the codes.
Other thing worth mentioning is if it has in fact had the cats removed without a map this is very bad and can lead to the engine going bang due to boost spikes etc (more so on new age cars I believe)
Old 10 July 2014, 06:55 PM
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well a huge thank you for this info mate thanks you, should i book it in for a remap now then?
Old 10 July 2014, 06:59 PM
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Well first I would definitely find out what the code is saying...

What year and model is the car?
Old 10 July 2014, 07:01 PM
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says on logbook wrx300 but think its just wrx mate and shes a 54 plate with newer interior dials etc if that makes any difference ..... probably doesn't lol
Old 10 July 2014, 07:03 PM
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Gotcha, well in that case if it hasnt had a map then it definitely should get one... does it have a boost gauge in it at the moment? if so do you know what it is the highest boost it hits?
Old 10 July 2014, 07:40 PM
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im really new to this boost etc mate so i havent a clue, ive came from a vectra diesel lol and nope no boost gauge, these little snags its got i still really adore the car
Old 10 July 2014, 07:49 PM
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Get it to a specialist asap for a diagnosis/dyno session then remap if required and until then avoid driving it hard if you can.
Old 10 July 2014, 09:08 PM
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thanks for that advice matey i will do, anyone know of any good places to take it around the north west/ cheshire areas?
Old 11 July 2014, 12:24 PM
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and today still on and after driving for a few minutes its gone off
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