which cat is best 2 replace as i only want 2 replace 1
downpipe or centre ??????
need more noise lol
got classic uk turbo

daz

 

If you want pops and bangs you will probably need to replace both cats and probably fit a vent to atmos dump valve.
Ive got a full decat but with out the dump valve and it some times pops but not very often.
If your going to replace just one cat then do the downpipe the turbo will spool quicker and give the greatist power gains but as i said it probably wont pop with the other cat still there.

Andy

 

confused now. . lol
i always thought that replacing the downpipe cat would give better sound,,, then i read on here that the centre section would be best
now im told BOTH or if i got 2 do 1 then the front.
im not 2 fussed about more horses but i want it 2 sound EVEN better
i can get a magnex straight thru centre section 4a little over 50 quid
will this be worth doing ?
cheers again lol

daz

 

I just done my center pipe and it felt great a bit more power
and a bit more growel sounds like a scooby now. then last
monday put an atmospheric dumpvalve on now it pops and bangs.
hope that gives u an idea what to do

Zander

 

Full decat and standard dump valve and it pops like crazy..

JGM

 

well. lol . i think ive decided now.
ive just purchased the magnex straight thru centre section
gonna save a bit now 4 a downpipe then mot time ill just have to replace centre section with original,hopefully, lol.
cheers guys

daz

 

Oh yes it will

MY99 Magnex twin dp, Swana BB, Green filter, Run on SUL or optipsih and it pops like a popping thing does

At least I know it's finally fuelling correctly

 

How is it possible I get bangs with ALL cats on?
I have an Apex'i induction kit with the STI backbox (not the standard one fitted to STI's or P1's) and get loud bangs when decelerating, needle goes to 3-3300 rpm, if I just biip the pedal it bangs so loud that I sometimes scare myself when I have the window open....

How is that possible with cats?

 

I've got a Scoobysport C/Section and Backbox, standard DV, and mine pops every now and again, usually after a long, hard drive

Dan MY99 UK 4dr