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Old 21 January 2020, 12:28 PM
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Blurchow
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Default Intermittent problem

Hi I'm having an intermittent problem with my 04 subaru Impreza wrx. When I drive the car under normal driving conditions it's great no problems at all. When I drive it under full load it gets to between 2500 and 5000 rpm I get 1 or 2 pops from the exhaust and it's good again go into the next gear and same again but it doesnt happen all the time when driving like this. I've replaced the spark plugs all the coils and a test on the maf sensor came back working as it should. Theres no lights on the dash no flashes of lights when it does this and a diagnostic machine test came back with no faults on the engine.
Old 21 January 2020, 03:08 PM
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Is the car standard?
Old 21 January 2020, 03:11 PM
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Blurchow
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No. All was done by previous owner performance cams fully decatted full 3inch custom exhaust performance panel filter all silicone hoses stage 1 remap and walbro 255 fuel pump
Old 21 January 2020, 03:26 PM
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Originally Posted by Blurchow
No. All was done by previous owner performance cams fully decatted full 3inch custom exhaust performance panel filter all silicone hoses stage 1 remap and walbro 255 fuel pump
Are you sure its mapped for the mods correctly.
Old 21 January 2020, 03:45 PM
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Blurchow
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That my friend has been in the back of my mind awhile now but dont wanna waste £200 plus
Old 21 January 2020, 03:59 PM
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Originally Posted by Blurchow
That my friend has been in the back of my mind awhile now but dont wanna waste £200 plus
Get it on a rolling road, they will be able to check afr`s and see any issues.
Old 21 January 2020, 04:01 PM
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Will get that done and see the outcome. Thanks
Old 21 January 2020, 08:37 PM
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DET,as above get it checked before you kill the engine!
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Old 21 January 2020, 10:11 PM
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You can do afrs with a laptop, cable and romraider free version can't you?
I'm sure that's what I used a few years ago.
Old 21 January 2020, 10:46 PM
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Check I mean
Old 21 January 2020, 11:09 PM
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Originally Posted by stamina_daddy
You can do afrs with a laptop, cable and romraider free version can't you?
I'm sure that's what I used a few years ago.
No
you need a wideband o2 sensor and gauge/software

Last edited by ossett2k2; 21 January 2020 at 11:10 PM.
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