Benefits of Removing Cat and Running Straight Pipe?

[largeorangefont]

Originally Posted by black2yaris

: clap:





thanx for clearing that up & saving some people on this thread/YW some cash on useless exh.systems
..can you give us your opinion on what is a good set up for exhaust on our Yarii ....
some here want a fart can with sound ,
some of us want to improve preformance on a Yarii with in reason on a street car,
some want a Yarii they can weekend track with,
then some are just Ricers
.... any advice is welcome Thanx in advance

The best system would be a header back mandrel bent 2 inch system with a straight through muffler such as Magnaflow. You can use a single high flow cat between the 2 02 sensors and probably won't get a CEL.

[kurokoma-kun]

Originally Posted by largeorangefont

The best system would be a header back mandrel bent 2 inch system with a straight through muffler such as Magnaflow. You can use a single high flow cat between the 2 02 sensors and probably won't get a CEL.

What is your opinion of the one etimago is proposing for GB?
http://www.yarisworld.com/forums/showthread.php?t=9047

[largeorangefont]

Originally Posted by kurokoma-kun

What is your opinion of the one etimago is proposing for GB?
http://www.yarisworld.com/forums/showthread.php?t=9047

There is no info on piping diameter, but the price sounds good :)

[Black Yaris]

Originally Posted by largeorangefont

The best system would be a header back mandrel bent 2 inch system with a straight through muffler such as Magnaflow. You can use a single high flow cat between the 2 02 sensors and probably won't get a CEL.

I agree, but I recommend 2.25... I had the 2 inch at first and noticed a gain, but was not happy with the muffler. so I decieded to say hell with it and go 2.25 mandrel from the cat back with a new res and a flowmaster, and that made a HUGH difference though out the whole RPM range... IF I lost anything in the low end (i doubt I did) it was not felt and the gain out weighted the loss