orginal yaris 2005 1,5 turbo 150hk

[shtou]

removing the cat from 1.8 TS standard yaris and install a new exhaust helps the acceleration?

[CASTREX]

Originally Posted by shtou

removing the cat from 1.8 TS standard yaris and install a new exhaust helps the acceleration?

The removal of a CAT will give you a very small gain...

This is what I did with very good results:

I removed only the secondary cat (our car has 2 cats) and left the primary cat alone, that way the car will pass emmissions test.

Then I removed all the exhaust from the primary cat back and replace it by a custom unit. I used 2.25" pipe, a resonator and a rear chambered muffler.

Sounds great and I felt some good gains on the top range mostly.