frankbullitt

What are the best cats for the money. I wish I could get rid of them but I wont pass emissions and Illinois is tough on emissions. They suspend your lisence. And I was wondering how effective is exhaust tape. I want to get some bbk equal length chrome, ceramic ones are to expensive. Is the tape effective and does it effect the life of the headers.

7upedition

illinois just was added to the mustangs top states to hate list...lol

tape will hold moisture in the headers and they'll rot from the inside out... i'd save a few more pennies and get ceramic, they'll look much better and last lot longer imo

frankbullitt

wheres new york on that list? lol

vristang

I just want to clarify...
This theory is that the header wrap will hold moisture, and expedite the surface corrosion process, correct?
Your not saying that header wrap will cause the ID of the primaries to rust.

vristang

I haven't had any issues with using header wrap over the last several years.

In my opinion the reasoning behind header wrap causing corrosion or thermal expansion problems is completely flawed.

I live in Seattle and my car spends most of its time parked outside. I haven't witnessed excessive corrosion on the wrapped areas. If anything the wrapped sections have less corrosion.

those who try and say that the header wrap does not allow the primaries to expand are losing their marbles.
There is plenty of stretch in the fiberglass weave to allow for thermal expansion.


On the other hand, I have not seen any tests that showed header wrap to improve power.


My random thoughts,
jason

vristang

Here is my experience with MagnaFlow cats...




All tests were done at the same Test Facility using the same Test Equipment. Test Operators did very however.
Tested vehicle was an N/A 1987 Mustang Coupe. Mileage was 134,093 on first test, and 136,268 on final test (#4).
Other than the Catalytic Converter being removed, the car was in good running order for first test and all other tests. No Diagnostic codes were present.


Baseline Test
____¬______Tested____Limit_____Result
HC Cruise___160______160______Pass
HC Idle_____709______220______FAIL!!!
CO Cruise___.51_______1.1______Pass
CO Idle_____.54_______1.2______Pass
Other than the lack of cats the car was in good running condition.


Re-Test #2
__________Tested____Limit_____Result
HC Cruise___142______160______Pass
HC Idle_____650______220______FAIL!!!
CO Cruise___.51_______1.1______Pass
CO Idle_____.48_______1.2______Pass
Added New O2 Sensor, increased tire pressure to 52psi, disconnected fan to get engine hotter (good for reducing HC). Had run "Guaranteed to Pass" in previous tank (followed directions)


Re-Test #3
__________Tested____Limit_____Result
HC Cruise___173______160______FAIL!!!
HC Idle_____551______220______FAIL!!!
CO Cruise___.53_______1.1______Pass
CO Idle_____.61_______1.2______Pass
Replaced Factory N/A short block with Used Factory Turbo Block; this was due to a hole in Piston #4. Plugged the fan back in.


Re-Test #4
__________Tested____Limit_____Result
HC Cruise____44______160______Pass
HC Idle______61______220______Pass
CO Cruise___.06_______1.1______Pass
CO Idle_____.04_______1.2______Pass
A NEW Catalytic Converter from MagnaFlow had just been installed. At the time of the test, the cat had about 125 miles on it.

frankbullitt

does this mean i can remove two of my cats? I think my car has four. or doesw this mean magna makes good cats. from what i see it fails one part of the test every time.

frankbullitt

i read it wrong srry. thanks for the info