Hi flow cat question?

[SKYZER 33]

i hav just brought a hi flow cat for my r33 the question is in the stock cat

there is like a braided line that is plumbed into the side of it. what does this do?

can i just leave it out without connecting it to the hi flow cat

Thanks in advance

[Craved]

you will need that have that welding into the piping so that the ECU doesn't get confused and go into limp home mode..

measures engine temp through exhaust! best to have her hooked up mate.

[drakan69]

yeah like Craved said, that lill gizmo keeps an eye on the exhaust temp if it get's too hot the head of your motor is dieing/dead ( i think ) and your ECU has a fit and shuts you car down (once again i think, as this has never happened to me, so carn't be too sure)

if you leave it off, i don't think your ECU will be too happy about that either & will probably do something nasty (like shut the car down) after a few minutes

[Craved]

should only limit it to 2500 rpm

[SS8_Gohan]

what sought of hi flo cat u got there SKYZER?

[SKYZER 33]

it's the same as this here except it has the flanges to bolt it straight on.