All Things Mk5 > Mk5 General Area
K04 Conversion - Looking for opinions & posting my progress/info about the swap
Lewo:
Did you say you're running with boths cats?
Rtech advice on having a pre-cat delete done.
On mine with it done & a panel filter I got 214bhp so an easy gain and turbo spools quicker.
So if you do decide to keep standard downpipe with either turbo do the delete!
ZoliWorks:
--- Quote from: Lewo on April 03, 2024, 01:40:31 pm ---Did you say you're running with boths cats?
Rtech advice on having a pre-cat delete done.
On mine with it done & a panel filter I got 214bhp so an easy gain and turbo spools quicker.
So if you do decide to keep standard downpipe with either turbo do the delete!
--- End quote ---
Yeah I've already ordered a downpipe with a sports cat. It's as you've said, it'll make the turbo spool faster, free up some HP and also wont hold all that heat right behind the turbo. No wonder K03's crack even on a stock car..
OllieVRS:
Lewo's idea of the pre-cat delete is a good one, but in my opinion the sound of a sports cat is worth the extra cost associated, plus a little more airflow over the standard main cat. And if you're lazy (like me) it's a plus, as you don't have to bash/cut/weld the pre-cat yourself, just out with the OEM downpipe and in with the new.
ZoliWorks:
--- Quote from: OllieVRS on April 04, 2024, 02:24:05 pm ---Lewo's idea of the pre-cat delete is a good one, but in my opinion the sound of a sports cat is worth the extra cost associated, plus a little more airflow over the standard main cat. And if you're lazy (like me) it's a plus, as you don't have to bash/cut/weld the pre-cat yourself, just out with the OEM downpipe and in with the new.
--- End quote ---
Have you noticed any cabin drone with the sports cat downpipe? How much more loud is it over stock?
OllieVRS:
No change in drone, sometimes it leaks some (nice) sound to the cabin under hard acceleration, but normally sounds the same. It's most noticeable from the (also nice) rasp your hear with the windows down, makes my stock exhaust only a little bit louder.
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