MS Sport muffler and RX8Store HFC fitment
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MS Sport muffler and RX8Store HFC fitment
Question on the fitment between my Mazdaspeed Dual Sport exhaust and the RX8Store High flow Cat.
I have my high flow cat on for a few of days now and am getting acquainted with it. I am hearing a slight leak some where so I thought to look it over good. All the welds seem good but I am noticing the fitment between the muffler tail piping and the high flow cat do not line up quite right.
I looked closely to the stock cat piping and notice that it bends very slightly down where it connects to the muffler piping. I see that the high flow cat doesn’t have that slight extra bend in it so it doesn’t match up well with the muffler. So there is a gap at the top where the flanges connect together.
I cannot get a good seal because of this and it is making a pfffffffsssst sound in the upper rev ranges.
Has anyone else noticed this on this same setup or any other exhausts and high flow cat setups?
What would be a solution to this?
I have my high flow cat on for a few of days now and am getting acquainted with it. I am hearing a slight leak some where so I thought to look it over good. All the welds seem good but I am noticing the fitment between the muffler tail piping and the high flow cat do not line up quite right.
I looked closely to the stock cat piping and notice that it bends very slightly down where it connects to the muffler piping. I see that the high flow cat doesn’t have that slight extra bend in it so it doesn’t match up well with the muffler. So there is a gap at the top where the flanges connect together.
I cannot get a good seal because of this and it is making a pfffffffsssst sound in the upper rev ranges.
Has anyone else noticed this on this same setup or any other exhausts and high flow cat setups?
What would be a solution to this?
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Originally Posted by woodysjh
All the welds seem good but I am noticing the fitment between the muffler tail piping and the high flow cat do not line up quite right.
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I did not use the stock bolts because I could not get them off, however I went and bought new bolts and used the stock springs and the doughnut gasket.
So if you look at the drawing I did on this picture.
The pipe shown is the stock cat pipe.
Think of 1 is the mazdaspeed sport muffler.
2 is the high flow cat, see how in diagram 3 it creates a gap at the top because it doesn't have that bend like the stock cat has. so they do not match up flush with each other.
So I take it that most aftermarket exhausts are straight and do not have that bend in them. If that is the case then they would match to the HFC perfectly.
So if you look at the drawing I did on this picture.
The pipe shown is the stock cat pipe.
Think of 1 is the mazdaspeed sport muffler.
2 is the high flow cat, see how in diagram 3 it creates a gap at the top because it doesn't have that bend like the stock cat has. so they do not match up flush with each other.
So I take it that most aftermarket exhausts are straight and do not have that bend in them. If that is the case then they would match to the HFC perfectly.
Last edited by woodysjh; 08-15-2006 at 06:55 PM.
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