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[Bruce Almighty]

Now I understand.. (I hope).  To get the same size opening from the exhaust manifold and the engine bloc   

[zeuce]

you betcha

[Jesse Ray]

I totally noticed the power difference after pot matchin my manifold.

[Seanson]

anyone got a "how to" on the port matching ??

[zeuce]

if you check out Jesse Ray's post on his Cat delete there are helpful links and info.
here is a pic of my spare manifold. you can see the black soot ring where the hole doesn't match the head. that is your pattern to grind out basicly.

[Master Yota]

Brain fart time - what is MBRP and CAI?  I'm a little more old school - so please humor me...

[zeuce]

CAI = cold air intake, the tube setup I showd you
MBRP is a performance exhaust company (canadian too) they do wikid cat backs for our trucks

[Master Yota]

CAI = cold air intake, the tube setup I showd you
MBRP is a performance exhaust company (canadian too) they do wikid cat backs for our trucks

Gotcha!  Its early still, and I'm suffering from the time change...

[CanyonAB]

Yeah...MBRP makes good stuff...they just started making systems for quads and dirtbikes...I ordered a system for my Yamaha Warrior.

And MBRP stands for Martin Barkley Racing Products I think.

[Rybuck]

i seem to have lots of power out of my 3.5L. I have CAI, exaust from the cat, throttle body spacer, preformance chip for the engine, peformance o2 sencer, high end spark plugs, and sinthecic oil...in all i get about 600km to a tank on the highway. i can not complain!