Off-Road X or H Pipe Fox Mustang - Error Code? - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 11 Old 06-17-2019, 07:39 PM Thread Starter
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Off-Road X or H Pipe Fox Mustang - Error Code?

My BBK catalytics have broken apart and I need to get a replacement.

I searched on Google and here to see if the BBK off road H-pipe will throw a code for a Fox Mustang, but the closest I could get was that a 1994 Cobra will.

So, I have a 1989 Mustang. If I run an off-road pipe, will it cause a check engine light? I believe it only has upstream O2 sensors, so really don't believe that it will but would like confirmation before purchasing.

Other then the potential smell and being a bit louder, are there any other negatives?


1989 Convertible LX w/AOD:
ATK - HP06 Engine (w/ E303 cam), K&N Panel Filter, 75 MM PRO-M Mass Air meter, 70 MM Edelbrock Throttle Body, Edelbrock Performer Intake, MAC H-Pipe w/cats, Flow Masters, Flex-A-Lite fan, and Under-Drive Pulleys.
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post #2 of 11 Old 06-17-2019, 09:58 PM
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You'll be fine or replacement cats are $50 a piece on amazon. You'd probably be within the same dollar range doing new cats


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post #3 of 11 Old 06-18-2019, 10:53 AM
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No, it won't cause a check engine light. It shouldn't on a 1994 Cobra either.

The CEL when you remove cats started with the OBD2 Mustangs in 1996.

Downsides are the smell, the noise, and possible harassment by your local law enforcement professional...but the last one can differ based on region.

Mike
--1988 Mustang LX 5.0--
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post #4 of 11 Old 06-18-2019, 06:54 PM Thread Starter
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Thank you. I ordered last night to get in on the tail end of the LMR sale.

I would add cats, but have concerns with the last ones breaking down after just 60 to 70k miles. If it is too loud, I'll take the advice to get some cheap cats welded in.. Or maybe a quieter muffler.
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post #5 of 11 Old 06-18-2019, 09:53 PM
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To be honest 60-70k miles is actually a pretty long time for aftermarket cats. I’d just go back with what you had before.
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1996 Mustang
347, 205 11R's, Box R Intake, Ported lower, custom comp cam, 42lb injectors, 255LPH, pro-m 80, 75mm Cheap-ass TB, 1 3/4 x 3in LT's, exhaust by me, A5 trans, 4.10

422WHP/456Ft/lb. Tuned using QH by Tony @ Tuners Inc.
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post #6 of 11 Old 06-18-2019, 10:32 PM
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That is true unless you fork over $$$$ for Gesi cats

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post #7 of 11 Old 06-19-2019, 08:47 AM
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I'm actually surprised someone drove that far with aftermarket cats. Usually these cars are not driven that much.

I have a bassani catted X-pipe, but at my typical 200 miles per year of driving, its going to take me 300 years to get up to that sort of mileage on them.

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post #8 of 11 Old 06-19-2019, 08:58 AM Thread Starter
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Quote:
Originally Posted by Mustang5L5 View Post
I'm actually surprised someone drove that far with aftermarket cats. Usually these cars are not driven that much.

I have a bassani catted X-pipe, but at my typical 200 miles per year of driving, its going to take me 300 years to get up to that sort of mileage on them.
Bought the car in 1996 and had the h pipe put on. It was my daily driver. Engine blew and it sat for a while. Car is driven far less now, though.

I'm worried I made a mistake. Oh, well.. guess ill find out. I've recently been in a 69 camaro and a 72 mach 1... I would assume it's about the same... (hope?)

1989 Convertible LX w/AOD:
ATK - HP06 Engine (w/ E303 cam), K&N Panel Filter, 75 MM PRO-M Mass Air meter, 70 MM Edelbrock Throttle Body, Edelbrock Performer Intake, MAC H-Pipe w/cats, Flow Masters, Flex-A-Lite fan, and Under-Drive Pulleys.
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post #9 of 11 Old 06-19-2019, 03:00 PM
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Don’t sweat it you did fine. Been cat-less for decades here.

Si vis bellum para pacem

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post #10 of 11 Old 06-19-2019, 04:50 PM
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Don't worry about it at all, it gives a nostalgia to the whole experience


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post #11 of 11 Old 06-27-2019, 05:07 PM Thread Starter
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just an update for posterity... Had it put on. I haven't driven a whole lot yet, but it sounds about the same at idle. It has a real nice growl at WOT, though. Haven't had any gasoline smell, despite the top being down. Feel a little bit more power from stop, but that is likely due to removing the broken down cats more than just because I am now catless.

1989 Convertible LX w/AOD:
ATK - HP06 Engine (w/ E303 cam), K&N Panel Filter, 75 MM PRO-M Mass Air meter, 70 MM Edelbrock Throttle Body, Edelbrock Performer Intake, MAC H-Pipe w/cats, Flow Masters, Flex-A-Lite fan, and Under-Drive Pulleys.
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