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Firstly, Hi, secondly, possible issues with cutom exhaust 

 

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 Post subject: Firstly, Hi, secondly, possible issues with cutom exhaust
Posted: Fri Nov 13, 2009 8:01 pm 
Fordmods Newbie
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Age: 35

Posts: 1

Joined: 13th Nov 2009

Ride: BF MK2 XR8

Location: Melbourne
VIC, Australia

I have a 11/07 built BF MK2 XR8 sequential.
I have recently have a new exhaust fitted, it still has the standard headers but it now has high flow cats, the mid muffler removed and twin 2.5" pipes in place as well as a red back muffler on the rear.
The car sounds pretty good but soon after i had it put on the engine warning light came on, i called ford and they said it isn't a big issue but do to the exhaust they wouldn't look at it under warranty.
Any ideas on how to fix this? cheers

-the oxy sensors have not been touched
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 Post subject: Re: Firstly, Hi, secondly, possible issues with cutom exhaust
Posted: Fri Nov 13, 2009 9:21 pm 
Getting Side Ways
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Posts: 595

Joined: 2nd Oct 2007

Power: 327 rwkw

Location: Perth
WA, Australia

Good idea to put it on a diag machine and get the fault code. Go from there.
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 Post subject: Re: Firstly, Hi, secondly, possible issues with cutom exhaust
Posted: Sun Nov 15, 2009 1:08 pm 
EFI Guru
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Age: 52

Posts: 4289

Joined: 5th Nov 2004

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Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Being a BF it has 4 HEGO's. The aftercat HEGO's are a diagnostic to the cats, ie they check that they are working properly. Most high flow cats do not work as well as the originals because quite simply, they all about flow and not very good at actually catalysing the nasty stuff. Often these aftermarket cats have poor heat insulation which, combined with a large internal structure make for not enough temperature for them to work correctly.
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 Post subject: Re: Firstly, Hi, secondly, possible issues with cutom exhaust
Posted: Tue Nov 17, 2009 9:44 am 
Getting Side Ways
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Age: 31

Posts: 1085

Joined: 6th Nov 2004

Ride: BF XR Turbo

Location: Castle Hill
NSW, Australia

as pete said, your ecu thinks your cats arent working correctly hence the warning light. If you were to get the car tuned your tuned could turn off the warning light function for you. My BF XR6T had the same issue with fittment of a hiflow cat, retuned, more kw's and no pesky light :)





-mitch

 

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BF XR6T 6spd Auto. 60lb injectors, Hybrid Cooler, Custom Piping, Custom Surge Tank, Actuator.

12.3 @ 114

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