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1979-2004 V6 Mustang Tech Discussions

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Unread 04-08-2008   #16 (permalink)
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Quote:
Originally Posted by 963.8 View Post
Did you replace the gasket? Was it a new manifold? If not it might have been warrped.
Yeah i bought a new manifold from Dorman along with the gasket.
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Unread 04-08-2008   #17 (permalink)
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Originally Posted by andro45 View Post
Ok guys so i replaced the exhaust manifold, it wasn't easy but got it done. Now i am dealing with a completely new issue. I got a ticking sound coming from that same exhaust pipe and its vibrating excessively. Someone suggested that my catalytic converter might be clogged, any suggestions as to what it might be? the cats or something wrong with the install?
The ticking sound may be an exahsut leak. Did you bolt on those exhaust manifolds at the right torque spec?

New gaskets, right amount of torque (manifold to block & mid pipe)...Then you shouldn't be hearing any of those ticking noises.
__________________
2001 V6 WhitePony 4R70W:
-- BBK 1 5/8" Ceramic Shorty Headers
-- K&N FIPK Gen II 57 Series
-- 2.5" True Dual Exhaust:
- MAC 2.5" O/R H-Pipe
- MagnaFlow 2.5" Hi-Flow Cats
- FlowMaster Original 40s
Future Master Technician of BMW Motor Co.
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Unread 04-09-2008   #18 (permalink)
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Quote:
Originally Posted by whitepony331 View Post
The ticking sound may be an exahsut leak. Did you bolt on those exhaust manifolds at the right torque spec?

New gaskets, right amount of torque (manifold to block & mid pipe)...Then you shouldn't be hearing any of those ticking noises.
yeah i did, is there any chance it might be the catalytic converter?
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Unread 04-09-2008   #19 (permalink)
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How long have you had this car?

Cats can last you for quite a while, but if you're hearing some ticking noises under the car where your cats are...then it looks like you need to replace them.

Is your Check Engine light on?
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2001 V6 WhitePony 4R70W:
-- BBK 1 5/8" Ceramic Shorty Headers
-- K&N FIPK Gen II 57 Series
-- 2.5" True Dual Exhaust:
- MAC 2.5" O/R H-Pipe
- MagnaFlow 2.5" Hi-Flow Cats
- FlowMaster Original 40s
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Unread 04-10-2008   #20 (permalink)
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I got about 72,000 miles on the car, thats why i was a bit skeptic that it might be the catalytic converter since they usually last longer. I dont have the check engine light on, should it be on if the cats are shot?
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Unread 04-11-2008   #21 (permalink)
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Most definitely your CEL (Check Engine Light) will be on if your cats are shot.

Your O2 sensors will start to read unwanted air goin' through.

I've done some reading about 99-04 exhaust manifolds on our Ponies, and TSBs stated that the passenger side exhaust manifolds will crack due to the condensation.
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2001 V6 WhitePony 4R70W:
-- BBK 1 5/8" Ceramic Shorty Headers
-- K&N FIPK Gen II 57 Series
-- 2.5" True Dual Exhaust:
- MAC 2.5" O/R H-Pipe
- MagnaFlow 2.5" Hi-Flow Cats
- FlowMaster Original 40s
Future Master Technician of BMW Motor Co.
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Unread 04-13-2008   #22 (permalink)
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Quote:
Originally Posted by whitepony331 View Post
Most definitely your CEL (Check Engine Light) will be on if your cats are shot.

Your O2 sensors will start to read unwanted air goin' through.

I've done some reading about 99-04 exhaust manifolds on our Ponies, and TSBs stated that the passenger side exhaust manifolds will crack due to the condensation.
Well as i was driving my car to work the CEL went off so that plus the ticking sound im guessing its the catalytic converter. should i replace all 4? what can u tell me about high flow catalytic converters?
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Unread 04-14-2008   #23 (permalink)
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you should probably check your cats, because mine cracked because they were stopped up, you would think that they'd last longer but they dont, i live next to a ford mechanic, and e told me that the stock back cats are horrible for stopping up, cut them of and put straight pipe in, but make sure you leave the 02 sensors in, mine ran alot better after i did that.
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Unread 04-14-2008   #24 (permalink)
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you should probably check your cats, because mine cracked because they were stopped up, you would think that they'd last longer but they dont, i live next to a ford mechanic, and e told me that the stock back cats are horrible for stopping up, cut them of and put straight pipe in, but make sure you leave the 02 sensors in, mine ran alot better after i did that.
Yeah, you'll have the flow. But you're also polluting the air!

And!!! Too much flow = loss of rear-end torque.
__________________
2001 V6 WhitePony 4R70W:
-- BBK 1 5/8" Ceramic Shorty Headers
-- K&N FIPK Gen II 57 Series
-- 2.5" True Dual Exhaust:
- MAC 2.5" O/R H-Pipe
- MagnaFlow 2.5" Hi-Flow Cats
- FlowMaster Original 40s
Future Master Technician of BMW Motor Co.
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Unread 04-14-2008   #25 (permalink)
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Quote:
Originally Posted by andro45 View Post
Well as i was driving my car to work the CEL went off so that plus the ticking sound im guessing its the catalytic converter. should i replace all 4? what can u tell me about high flow catalytic converters?
Hi-Flow Cats?

My first dual exhaust set up:

O/R H-Pipe w/ two hi-flow cats and FlowMaster 40s.

This setup was okay, I liked the fact that it was LOUD, it felt like I didn't have any cats at all. But...I was losing some of my back pressure. Plus the ride quality feels like you're gliding through air.

My current set up:

Stock cats/hi-flow cats/h-pipe/flowmaster 40s.

Not as loud as my first setup, but I got my damn back pressure!!! Still sounds good in my opinion. But I'm going to upgrade my exhaust system again.
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2001 V6 WhitePony 4R70W:
-- BBK 1 5/8" Ceramic Shorty Headers
-- K&N FIPK Gen II 57 Series
-- 2.5" True Dual Exhaust:
- MAC 2.5" O/R H-Pipe
- MagnaFlow 2.5" Hi-Flow Cats
- FlowMaster Original 40s
Future Master Technician of BMW Motor Co.
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Unread 04-15-2008   #26 (permalink)
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Quote:
Originally Posted by whitepony331 View Post
Hi-Flow Cats?

My first dual exhaust set up:

O/R H-Pipe w/ two hi-flow cats and FlowMaster 40s.

This setup was okay, I liked the fact that it was LOUD, it felt like I didn't have any cats at all. But...I was losing some of my back pressure. Plus the ride quality feels like you're gliding through air.

My current set up:

Stock cats/hi-flow cats/h-pipe/flowmaster 40s.

Not as loud as my first setup, but I got my damn back pressure!!! Still sounds good in my opinion. But I'm going to upgrade my exhaust system again.

So that ticking sound is it that the filter inside the cat dissolved or reduced somehow and its now just bouncing around in there? Im thinking about going w/ the 2 hi-flow cats, the loss of some back pressure did not decrease your performance significantly right?
Im sorry i ask so many questions but i need this car to get me through college and i want to do everything right.
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Unread 04-16-2008   #27 (permalink)
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No it did not decrease the power.

Just make sure you know of a well-known muffler shop that can create a badd-ass yet powerful exhaust system with those cats.

I'd say...

Cut the last two cats off. Weld on the two hi-flow cats...then run your duals from there.

You can't miss!
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2001 V6 WhitePony 4R70W:
-- BBK 1 5/8" Ceramic Shorty Headers
-- K&N FIPK Gen II 57 Series
-- 2.5" True Dual Exhaust:
- MAC 2.5" O/R H-Pipe
- MagnaFlow 2.5" Hi-Flow Cats
- FlowMaster Original 40s
Future Master Technician of BMW Motor Co.
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Unread 04-17-2008   #28 (permalink)
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Quote:
Originally Posted by whitepony331 View Post
No it did not decrease the power.

Just make sure you know of a well-known muffler shop that can create a badd-ass yet powerful exhaust system with those cats.

I'd say...

Cut the last two cats off. Weld on the two hi-flow cats...then run your duals from there.

You can't miss!
Thank you for all your help man, I really appreciate it.
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