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Engine Management Light???
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Old 23 May 2011, 07:52 PM   #1 (permalink)
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Exclamation Engine Management Light???

I have recently just got hold of a 2003 STi Bugeye. The car is awesome, the only thing that is annoying me with it is the engine management light is always on.

The car apparently has a full decat exhaust system on it (there is receipts confirm a full system) and it has a prodrive ECU; has a dyno read out for 327BHP.

The guy I got it from says it comes up with cat efficiency (or something like that) when plugged into the diagnostic machine. Am I right in assuming that where it is decated it is confusing the Lamba sensors?

The car runs like a treat so don't think anything major must be wrong. Is it worth getting it checked out for myself or just take his word for it? Also is there a way of getting rid of it, if the decat is the problem (i've toyed with removing the bulb but not sure if this is the best idea?).
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Old 23 May 2011, 07:57 PM   #2 (permalink)
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Re: Engine Management Light???

Removing bulb will not sort the problem or any future problems get it on the diagnostics yourself see what the codes are.
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Old 24 May 2011, 06:08 PM   #3 (permalink)
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Re: Engine Management Light???

The light is their to make you aware of any potential running issues - I would in no way suggest removing the bulb. With the exhaust mod you would need to establish if the car has been re-mapped to accomodate this. Or it could be a faulty sensor - tbh it could be any number of things. If you have outlaid on such a nice motor give it the benefit of having it looked @ by a specialist, dont take it to a dealer as more often than not they will just eliminate the code and light and say thankyou very much Mr 70. Ive learnt from this, get it to a reputable specialist to determine what the problem is. You ll probably find the motor will run even better also!!! Ben
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Old 24 May 2011, 09:03 PM   #4 (permalink)
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Re: Engine Management Light???

Cheers for that. Yeah think I'll take the advice and get it looked at. Just have to find a specialist in or around Southampton.

I got it up on some ramps today and had a look underneath and its confused me more... its got the first cat removed but looks like it has some type of sports cat as the second one. But what i also noticed that the sensor before the cat (or cats if they were there) was not there and has been removed and blanked, although the sensor after the cat is there. Am i right in assuming that the first sensor should still be there even if it has the first cat completely removed?

Oh and it has been remapped, not to say it was necessarily done properly i suppose?
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