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Topic Review (Newest First)
08-12-2013 09:49 PM
arjay219 just a little update. buddy works with his dad's engineer/production company and they have a huge shop there. finally got a chance to get down there this weekend. We lifted the car removed the exhaust and cut off that cat behind the flex and welded some pipe in its place. It sounds absolutely perfect now
10-09-2012 08:24 PM
arjay219 A little more back pressure maybe? I have one from magnaflow. Street and OBDII legal according to them.
09-14-2012 10:32 AM
Fernando_221 I'm thinking about a 2.5" HFC for my Focus. It has full 2.5" exhaust (two magnaflows) and OBX header, it's very loud.

Do you think I'll have loss of power if I throw a HFC ? Do you recommend any 2.5" HFC? Magnaflow?
09-13-2012 09:31 AM
arjay219
Quote:
Originally Posted by rambleon84 View Post
I think the OP just keeps calling it a downpipe and thats whats causing confusion. A downpipe is the collector where the four pipes of the header combine into one before the main cat and then flexpipe.

After the flexpipe you have a highflow cat. Removing that hfc with a straight pipe will increase your sound. Like felix said, some shops may not want to remove a cat. Just convince them that the main cat is in the manifold or find a shop that doesnt care.
Yes. Thanks for clarifying what I mean. I don't see why they wouldn't. They removed the stock one and didn't ask any questions about it when putting on this kit.
09-13-2012 09:24 AM
rambleon84
Quote:
Originally Posted by arjay219 View Post
that's what i figured. would it be best to get another catless downpipe? or cut out my hfc and have a shop weld piping in place?
Quote:
Originally Posted by felixthecat View Post
As far as a catless down pipe= the manifold is part of the converter= manicat. Nothing really you can do about that, it hook's up to your flex pipe. If you have a hfc after your flex pipe, you could remove that part & install a piece of pipe in place of your hfc. I don't know a shop that would legallity do that.
I think the OP just keeps calling it a downpipe and thats whats causing confusion. A downpipe is the collector where the four pipes of the header combine into one before the main cat and then flexpipe.

After the flexpipe you have a highflow cat. Removing that hfc with a straight pipe will increase your sound. Like felix said, some shops may not want to remove a cat. Just convince them that the main cat is in the manifold or find a shop that doesnt care.
09-13-2012 07:40 AM
felixthecat
Quote:
Originally Posted by arjay219 View Post
that's what i figured. would it be best to get another catless downpipe? or cut out my hfc and have a shop weld piping in place?
As far as a catless down pipe= the manifold is part of the converter= manicat. Nothing really you can do about that, it hook's up to your flex pipe. If you have a hfc after your flex pipe, you could remove that part & install a piece of pipe in place of your hfc. I don't know a shop that would legallity do that.
09-13-2012 12:03 AM
arjay219
Quote:
Originally Posted by st12131 View Post
It sounds way better without the hfc, I've been running a trubendz Magnaflow for almost 2 years now without one

sent from my Samsung Galaxy SIII using FF Mobile
that's what i figured. would it be best to get another catless downpipe? or cut out my hfc and have a shop weld piping in place?
09-12-2012 11:53 PM
st12131 It sounds way better without the hfc, I've been running a trubendz Magnaflow for almost 2 years now without one

sent from my Samsung Galaxy SIII using FF Mobile
09-12-2012 11:29 PM
arjay219 Does anyone agree that my Trubendz magnaflow would be louder w/o the hfc?
09-12-2012 09:41 PM
arjay219 I'm running a Trubendz with magnaflow muffler and HFC. As I mentioned earlier I don't want a header, I don't want it crazy loud but more aggressive than what it currently is. I don't want to put a bunch of money into performance. It gets $$$. I'm just in search of the tone I want.

My last car was a cobalt. All I had to do was replace the lunchbox with an aftermarket muffler and I was content. Everything else was stock. That car was louder than my focus is with a flexback setup.

I DON'T have the money to get a header or an intake or a tune.
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