Cat replacement Question

[Driver]

Hey all

Sorry i cant search (shlt computer)

I want to use a straight thru pipe to replace the cat temporarily and I attached a pic of what i want to do.

If you have a look i have 2 drawings in that pic, i was wondering if both ways of making the replacement pipe will work just as good as the other.

Thanks

Brendan

[Craved]

LOL at your sig!!!

then: first - it's a big fine to run no CAT

second - the second option would definately be a better option if your dump is indeed smaller than the exhaust.. there was a big thread about exhaust design stating what angle the transistion should be for optimum performance! so your options are to get a new dump of same size, or create that design that you have drawn.. good idea for the track have thought of doing myself...

basic rundown of the article is that transistionbe be between 7 and 12 degree's to create a suction within the exhaust without creating too much back pressure!

hope this helps!

[HIPSI]

Driver, since you are living in Perth i dont think there is an actual law against not running a cat on your car (check with the pits incase im wrong) but if this is correct then dont run one at all.

[Driver]

thanks for the info!

realy appreciate it

so exhaust shops can make something like the second pic i drew?

i thought you had to have a cat in any state?