De-cat exhaust system

[cali yaris]

i dont think a cat can effect back pressure , but the boxes you use can.

Anything that restricts exhaust flow affects back pressure.

[UberSilver]

Originally Posted by Capagotks

speaking of rotaries, do you think onw would fit in a yaris, mounted sideways, and even if the front bumper had to be extended?

Would fit easy, you'll need to have an adaptor made to mate with the trans.

I put a 13b ported and blown, into a 71 morris mini. With close to 300 hp, that mini was a real beast.

[chaditotx]

Does anyone know where I can get some real lead additive? Not the fake stuff either.