Your experiences with Magnaflow 59975 cats?
#21
Was wondering around the XK subforum, and headed over to the Nameless Performance website. It looks like they finally developed a set of downpipes w/cats for the STR. A little spendy, but the XK guys swear by them.
2002-2008 Jaguar S-Type R Downpipes - Nameless Performance
2002-2008 Jaguar S-Type R Downpipes - Nameless Performance
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#28
Where are these dyno numbers? Price is baffling high, especially considering if you have a clogged cat, odds are you'll need to add some serious heat to the exhaust manifold studs to free the downpipe...
#30
#31
I am bringing this thread back to life partially to ask if others are having their Magna Flow high flow cats go bad after 30K miles.
My STR had Magna Flow cats installed in late 2010, and I believe that at least one is going bad. (P0420 error code and occasional "Restricted Performance" message.)
I've read in other forums that "after market" high flow cats don't last that long.
True?
My STR had Magna Flow cats installed in late 2010, and I believe that at least one is going bad. (P0420 error code and occasional "Restricted Performance" message.)
I've read in other forums that "after market" high flow cats don't last that long.
True?
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#33
Anyone ever remove cats completely and have pipes made to go in place of them? Anyone ever gut the cats and reinstall them hollowed out? If you use O2 sensor spacers on the rear O2 sensors to pull them out of the exhaust flow, it shouldn't kick any codes. As long as the rear O2 sensor reads different than the front your good! Just curious if anyone has done this and how it sounds and performs? If high flow cats make that much of a difference then no cats at all should make a huge difference!
#34
Just thinking but:
1. the back pressure will be far too low
2. the O2 sensors will be harder than that, but maybe not much harder
3. it really is not going to free up much power at all and if #1 is right it will reduce power
4. dyno before, try it, dyno after, report back - no-one's tried it
1. the back pressure will be far too low
2. the O2 sensors will be harder than that, but maybe not much harder
3. it really is not going to free up much power at all and if #1 is right it will reduce power
4. dyno before, try it, dyno after, report back - no-one's tried it
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