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Old 16 Jan 2011, 08:41 AM   #1 (permalink)
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engine management light

I have just fitted a straight through exhaust a performance air filter to my 02 plate wrx and the engine management light has come on i have disconnected the battery to see if it will reset but nothing. i have also disconnected the air flow meter and the engine stalls so i dont think it is that could it be a problem with the lambda sensor? if so how can i test it? or could it be something else as i noticed the air filter hadnt been fitted properly and not enough air flow was coming through you help people would be great

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Roy
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Old 16 Jan 2011, 08:50 AM   #2 (permalink)
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Re: engine management light

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Originally Posted by royboy View Post
I have just fitted a straight through exhaust a performance air filter to my 02 plate wrx and the engine management light has come on i have disconnected the battery to see if it will reset but nothing. i have also disconnected the air flow meter and the engine stalls so i dont think it is that could it be a problem with the lambda sensor? if so how can i test it? or could it be something else as i noticed the air filter hadnt been fitted properly and not enough air flow was coming through you help people would be great

cheers
Roy
The check engine light is for the catalyst efficiency and will keep coming on til remapped and the code switched off in the remap. It is pretty dangerous to the engine to run a full decat exhaust on newages without mapping but tbh you would get a massive hike in power from the map.
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Old 16 Jan 2011, 09:12 AM   #3 (permalink)
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Re: engine management light

cheers for the reply how much am i looking at to get her re mapped?
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Old 16 Jan 2011, 09:22 AM   #4 (permalink)
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Re: engine management light

I charge 350 for a full custom remap and am fully mobile so can come to you to do it.

Generally on your year of car power will increase to around 270bhp
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Old 16 Jan 2011, 08:25 PM   #5 (permalink)
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Re: engine management light

just bring it in to your local dealer for a plug in it will be cheaper than getting it re mapped to find something else is wrong
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Old 16 Jan 2011, 09:56 PM   #6 (permalink)
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Re: engine management light

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Originally Posted by quazmo View Post
just bring it in to your local dealer for a plug in it will be cheaper than getting it re mapped to find something else is wrong
They will read it. It will come up as code P0420

Then can reset it but the next day it will show up again.

Fitting a complete decat exhaust is taking the car's engine management to parts of the original subaru map that it just wasnt designed to be in.
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Old 16 Jan 2011, 09:58 PM   #7 (permalink)
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Re: engine management light

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Originally Posted by quazmo View Post
just bring it in to your local dealer for a plug in it will be cheaper than getting it re mapped to find something else is wrong
Give it to Duncan mate
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Old 17 Jan 2011, 08:54 AM   #8 (permalink)
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Re: engine management light

cheers for the posts guys but is there anywhere in fife scotland that can do a re map?
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Old 17 Jan 2011, 09:40 AM   #9 (permalink)
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Re: engine management light

Duncan travels and is really good value being open source
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Old 17 Jan 2011, 07:12 PM   #10 (permalink)
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Re: engine management light

Am up newcastle way on the 6th if you can travel down a little or could meet you around edinburgh direction on the 7th ...
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Old 17 Jan 2011, 08:02 PM   #11 (permalink)
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Re: engine management light

just re read original thread sorry about that you will need a re write for the decat by the way was wondering what is the highest you can tune a bug eye sti to without it blowing up to soon can you get it to wr1 bhp.
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Old 17 Jan 2011, 08:23 PM   #12 (permalink)
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Re: engine management light

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just re read original thread sorry about that you will need a re write for the decat by the way was wondering what is the highest you can tune a bug eye sti to without it blowing up to soon can you get it to wr1 bhp.
Mapped several to well over 400bhp on the original engine and gearbox. Think that is better than a wr1 but obviously not on the original turbo.

Most WR1's only really have 310bhp and a bug sti will give 330bhp give ir take with just exhaust, fuel pump and filter with the remap.
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Old 22 Jan 2011, 04:46 PM   #13 (permalink)
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Re: engine management light

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I charge 350 for a full custom remap and am fully mobile so can come to you to do it.

Generally on your year of car power will increase to around 270bhp


anywere near cumbria soon?
as thinking about remap
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Old 22 Jan 2011, 07:36 PM   #14 (permalink)
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Re: engine management light

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anywere near cumbria soon?
as thinking about remap
Hi. Yep - am up that direction at the beginning of Feb - am over in newcastle 4/5/6 feb so could hop over to cumbria for the monday ?
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