Cat Chop

[mum's car]

Has anyone tried gutting the cat and just bolting on the mt body on a turbo Glanza? Would it increase power by doing away with the restriction or?? In New Zealand we can get away with no cat at all.

[geocool69]

id imagine that it would improve the engines performance by reducing the restriction in airflow....

the less restrictive for a turbo the better.

no such luck over here...

you need to keep the cat on to keep the feds happy.

[mum's car]

Further to that, does the cat sensor cause problems when there is no cat or can you just ground it on the body to turn the dash cat light out?

[geocool69]

on that note i wouldent have a scooby mate....

would it cause the engine to screw up by not doing this...

or would it just be harmelss enough to leave the cat light on.

[Barnsley-SR]

Just split the cat in two (4 bolts) and bash out the insides with a hammer. Be careful though as loads of nasty powder comes out :D

Made mine sound alot deeper and pulls abit better. Must give me 3/4bhp more :D

[DazH]

Just split the cat in two (4 bolts) and bash out the insides with a hammer. Be careful though as loads of nasty powder comes out :D

Made mine sound alot deeper and pulls abit better. Must give me 3/4bhp more :D

Yep and that nasty powder is also carconogenic <_<

[toyotasera.co.uk]

The alternative, esp as you are in NZ is to get a decat pipe from www.mazstyle.co.nz. This performs better than a gutted standard one and you don't get cancer.

[mum's car]

Thanks for the help

[GT4 BOOSTER]

i decatted my celica , made a better sound , performance gained slightly ,and i mean slightly. oh and no lights came on the dash after removing it.because the sensor is forward of the cat .