H&S Sport Cat downpipe with CEL light??
15 May 2009, 01:09 PM
#1
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H&S Sport Cat downpipe with CEL light??
Hi I fitting my H&S 1 piece Sport cat downpipe on my 53 reg STi about 200 miles ago, it was running fine until yesterday morning with a Engine light constantly stayed on.
Scanned with Code PO0420 Cat under efficiency?? How normal is that? as I only heard same story on a de-cat. Help..
Scanned with Code PO0420 Cat under efficiency?? How normal is that? as I only heard same story on a de-cat. Help..
15 May 2009, 09:44 PM
#3
I had same problem with my H&S sport cat DP. I had it fitted at Powerstation and they fit a little resistor or something (i'm sure somebody more technical will explain) to stop the ECL. It sailed through its MOT though! 
16 May 2009, 01:35 PM
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Years ago I fitted the TSL equivalent, and cruising on the motorway it threw a CEL, cat efficiency, drove it for nearly a year till I got it mapped.
Get it mapped, it should make 340-350 bhp !
dunx
Get it mapped, it should make 340-350 bhp !
dunx
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