Is It Wort Hollowing Out The Cat On A Mk2 VTR ?

16th July 2006, 19:38

Just as title say, im considering, well someone said they can do this, heard its been done before but dont know about performance issues here, but.......

is it worth getting the cat hollowed out ? (mk2 vtr, can in manifold)

serious answers please.

16th July 2006, 21:48

yeah can be done coz saxo_vtr1234's cat on his mk2 98bhp model fucked up and he hollowed it out,seems slighty more responsive and has slightly depend the tone of his axaust.
only problem is come mot time coz you cant take that cat on and off like the other models.

17th July 2006, 00:19

yeh do it mate, just ull need to replace it at mot time! im going to do it with mine as soon as ive got it MOTed again which should be within the month!!

17th July 2006, 00:20

no reason not to if you have a spare for mot time, will probably work better than a straight through pipe as the box will still act to keep sound pulsing the same as standard

17th July 2006, 22:23

excellent, i'l get it done asap, MOT = no probs for me ;-) good friends own a m.o.t centre, that said, they wouldnt let me drive a dangerous car or anything but on minor things like this

if you know what i mean........ scott what you mean it would work better ? you do know mines the mk2 vtr with cat in manifold, will this then act like a 4-2-1 / 4-1 manifold would i.e. same type of gains ?

18th July 2006, 00:13

not quite

read www.gmcmotorsport.com the part about exhausts and sound pulisng to see why straight through pipes on an NA engine are not good

19th July 2006, 09:15

Ive done this on my furio its bangs and pops alot more than it used to and sometimes gets foot long flames out of the back (i have dual exit and it comes out of both) possibly bigger on a car with just a single pipe, it sounds raspier in my opinion but you may like that whereas im not too keen.

Performance - think it may have gotten rid of a flat spot or 2 lol