Do I really need this stuff? - Ford Powerstroke Diesel Forum
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Old 12-04-2012, 07:13 AM
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Do I really need this stuff?

After putting new injectors and GP's in my truck is awesome. It's a 1995 F350 with a 7.3 and 188000 miles on it. I'm going to be using it for towing. It's been suggested I also put this other stuff on it.

4" MagnaFlow Universal Cat convertor,
4" Turbo back aluminized,
International Bellowed Uppipe Kit,
Turbo supply Y-pipe,
I can understand why replacing the Cat. but do I really need the other stuff?
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Old 12-04-2012, 07:16 AM
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Unless you have emissions tests you don't even need the cat or muffler
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Old 12-04-2012, 07:35 AM
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No I don't need admission tests. I was just being told that the stock downpipe is scwished at a point so it wouldn't hit the firewall and to make the truck run better I would need to put this 4" downpipe on it. They told me the Cat is probably cloged up and restrickting exahast flow and would be best to replace it.
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Old 12-04-2012, 08:21 AM
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Quote:
Originally Posted by timlsalem View Post
After putting new injectors and GP's in my truck is awesome. It's a 1995 F350 with a 7.3 and 188000 miles on it. I'm going to be using it for towing. It's been suggested I also put this other stuff on it.

4" MagnaFlow Universal Cat convertor,
4" Turbo back aluminized,
International Bellowed Uppipe Kit,
Turbo supply Y-pipe,
I can understand why replacing the Cat. but do I really need the other stuff?
Quote:
Originally Posted by timlsalem View Post
No I don't need admission tests. I was just being told that the stock downpipe is squashed at a point so it wouldn't hit the firewall and to make the truck run better I would need to put this 4" downpipe on it. They told me the Cat is probably clogged up and restricting exhaust flow and would be best to replace it.
I hope that this suggestion isn't coming from a diesel shop. Someone is looking for a paycheck out of you. Yes, the stock DP is a hunk of ****. Replacing it with a 3" is inexpensive and a lot easier then replacing it with a 4" DP. The 4" will have you remodeling your firewall extensively to get it to fit with zero rubbing. Running a 4" from the DP back is nice and like Eric said you don't need a Cat or muffler. MagnaFlow is a fine system but more often you can find MBRP brand the cheapest. For fit and finish as well as price a lot of guys on here like the Diamond Eye products. Being in Arizona you shouldn't need any special metals for your exhaust as for most parts of Arizona don't salt or use chemicals on the roads that our Mid. and Northern folks have to put up with. Unless your exhaust y-pipe is damaged you do not need another one. The International bellowed up pipes are nice because it gets rid of any further gaskets needed in that area BUT they are vary E-X-P-E-N-S-I-V-E! You can get a couple hundred thousand miles out of your truck for the price of those things verses replacing the doughnuts every now and then. If you go wild later with power and T4 turbos THEN it will be worth it.

Are you still running the stock air cleaner and intake?

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Old 12-04-2012, 10:08 AM
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Thanks for the heads up BIGFUEL. I did c hange over to a BullyDog cold intake. Y-pipe is not damaged but the donuts are leaking and that's why I was told the International bellowed up pipes were better then what I have. You are right about spendy. Up pipe kit$850.00, Y-pipe $180.00, labor $822.00. will leaving the Cat I have on the truck do any damage?
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Old 12-04-2012, 10:13 AM
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I see by the estimate that the Diamond Eye 4" Cat $ 435.00 is more expensive then a 4" magna Flow $261.00.
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Old 12-04-2012, 10:15 AM
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Sorry about these split answers. Yes, this suggestions are coming from a diesel shop.
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Old 12-04-2012, 10:22 AM
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You need to talk to Cary here on the Forum. He can get you the parts and make the right suggestions as to what you may want/need.

EDIT: His user name is CT Performance, Inc.
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Old 12-04-2012, 10:24 AM
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Riffraff Diesel: Diamond Eye 4" Turbo Back Exhaust (offroad)

I don't know where you are finding a MagnaFlow for a diesel for $261. I can only find them for the cheapest at $515 and that doesn't have the downpipe.

15939 Magnaflow XL Performance Exhaust

[EDIT] the kit listed above is the only kit the MagnaFlow sells for the OBS Ford.

Last edited by BigFuel; 12-04-2012 at 10:28 AM.
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Old 12-04-2012, 10:32 AM
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Quote:
Originally Posted by BigFuel View Post
Riffraff Diesel: Diamond Eye 4" Turbo Back Exhaust (offroad)

I don't know where you are finding a MagnaFlow for a diesel for $261. I can only find them for the cheapest at $515 and that doesn't have the downpipe.

15939 Magnaflow XL Performance Exhaust

[EDIT] the kit listed above is the only kit the MagnaFlow sells for the OBS Ford.
I have a Diamond Eye 4 inch exhaust with the muffler and love it. I ditched the CC but kept the muffler to help prevent my truck from being ridiculously loud. It sounds really good with the muffler they have, kinda like a semi truck.
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