sounds good to me..so, downpipe and midpipe..do those include the cats? prices?
Bolt-on High Flow Cat
- Thread starter Matthew
- Start date
so the midpipe is to completely remove the stock 2nd cat converter and will bolt onto the stock pipe...cool...then the stock pipe goes until right before the rear axle where it bolts into my hks rear section...if for some reason it doesnt work will he accept returns? (although i definately should, this is just getting confusing lol) also do the midpipes come with the seals or do you just reuse the seals on either side of the 2nd cat (assuming it has seals)?
yea, so is the midpipe and downpipe all i need? do i need any more piping or any of that nonsense? this is getting confusing...
SpicyMchaggis said:
well it depends on what diameter piping you want to have. B/c you have and axle back, you will still have your stock piping from your 2nd cat to your axle back. It might be smart to replce that while your at it. Im not sure what size piping Andy is using for the NA down pipe.
p5sundevil
Member
- :
- 03.5 MidnightBlue p5
wow seemed like that was more confusing then it had to be.
So this is what I am getting from all the info above.
(stock)
There is the exhaust manifold/header which then goes to the downpipe with the precat then through some mid piping which includes the main cat and then on to the exhaust piping and out.
SO If I get 2 or 1 piece 4-2-1 header which eliminates the pre-cat then that means it includes the downpipe. This can be seen in pictures of these headers as they come into 2 pipes and make the 90 degree bend and then become one right after the bend.
So with a header that elminates the downpipe and a Cat-Back exhaust system the only part I would need/want is the mid section that includes the high flow cat. That is correct?
If you have an axle back system then there will be stock piping between the high-flow cat/midpipe and the start of the exhaust piping.
Basically if you have a full 4-2-1 header system from AWR, arospeed or HP racing
AND
a cat back exhaust system all you need is the midpipe with the high flow cat on it and you will have 1 high flow cat.
If you dont have a header then you can get the downpipe and midpipe and have 2 high flow cats. (1pre-cat)
The reason it gets confusing is it is possible to have 5 different sections of pipe to replace depending on how you do it.
header - downpipe - midpipe -e xhaust piping - axleback exhaust
or
header - downpipe - midpipe - catback exhaust
or
4-2-1header - midpipe - catback exhaust
or
4-2-1header - midpipe - exhaust piping - axleback exhaust
lol
(I am using the exhaust piping term to indicate the pipe between the last cat and the exhaust system which is included in a cat-back system)
So this is what I am getting from all the info above.
(stock)
There is the exhaust manifold/header which then goes to the downpipe with the precat then through some mid piping which includes the main cat and then on to the exhaust piping and out.
SO If I get 2 or 1 piece 4-2-1 header which eliminates the pre-cat then that means it includes the downpipe. This can be seen in pictures of these headers as they come into 2 pipes and make the 90 degree bend and then become one right after the bend.
So with a header that elminates the downpipe and a Cat-Back exhaust system the only part I would need/want is the mid section that includes the high flow cat. That is correct?
If you have an axle back system then there will be stock piping between the high-flow cat/midpipe and the start of the exhaust piping.
Basically if you have a full 4-2-1 header system from AWR, arospeed or HP racing
AND
a cat back exhaust system all you need is the midpipe with the high flow cat on it and you will have 1 high flow cat.
If you dont have a header then you can get the downpipe and midpipe and have 2 high flow cats. (1pre-cat)
The reason it gets confusing is it is possible to have 5 different sections of pipe to replace depending on how you do it.
header - downpipe - midpipe -e xhaust piping - axleback exhaust
or
header - downpipe - midpipe - catback exhaust
or
4-2-1header - midpipe - catback exhaust
or
4-2-1header - midpipe - exhaust piping - axleback exhaust
lol
(I am using the exhaust piping term to indicate the pipe between the last cat and the exhaust system which is included in a cat-back system)
Yea its official, Im going traveler shorty header, to wagner downpipe (w/cat)- wagner high-flow main cat-exhaust piping-axleback...it seems to be the most effiecient way and still be able to pass emissions..i'll just tell people the jungle of pipe under my hood is for a turbo..hehe..
uh..it was a joke bro
0
03P5
My head hurts.
From reading this post.
With the pictured downpipe, he has the high flow Random on there for the precat, but does he also have an accompying Random cat for the main one.
I think I'm doing the same as Spicy' up there, the Traveler shorty header, a downpipe like the one pictured, a high flow main cat, and then a cat-back exhaust.
Is the first O2 sensor before the precat, and the second one on the mid pipe before the main cat?
Wow, this was a confusing read. :0
From reading this post.
With the pictured downpipe, he has the high flow Random on there for the precat, but does he also have an accompying Random cat for the main one.
I think I'm doing the same as Spicy' up there, the Traveler shorty header, a downpipe like the one pictured, a high flow main cat, and then a cat-back exhaust.
Is the first O2 sensor before the precat, and the second one on the mid pipe before the main cat?
Wow, this was a confusing read. :0
