Im about to get a HKS HI PowerExhaust from one of the vendors here...just curious what the test pipes are that people are talking about...i figure once i pay for the hks exhaust i got everything i need...where do these test pipes go and what is the benefit to getting these? What is a good brand to get? i seen a few threads with ART test pipes, but like i said i have no iead what they do or where they go...thanks for the help

 

Test pipes replace the factory catalytic converter. The G35 has two. Test pipes have no materials inside like a catalyitc converter will have. Which means more HP. The ART pipes are a great choice with the HKS exhaust. They sound really nice together. Berk Technology make a nice test pipe. Check them out.

 

i assume i will not be able to pass emissions? would i be able to if i get some hfc's? if so what is a good brand?

 

nope you won't pass emissions. Berk make a very nice HFC.

http://www.b2autodesigns.com/product...oducts_id=2393

Charles

 

berks are 49 state legal right? go well with hks exhaust?

 

Yep and they will go great together.

 

hey thanks bro def will look you up when i take the plunge..i like to get all my info before i take the plunge..plus i like buying everything at once...quick question off topic...if i have an 03 at im assuming i dont have the revup vq35de engine...so am i just better off getting just a 5/16th plenum spacer? or can i get the mrev2...what gains would i get out of getting the mrev2 if i do..or can i just get the plenum spacer and be good?

 

I wish I lived back in Florida....no emissions test

And only the revups came in the 05-07 coupes and 05-06 sedans with 6MT, so no you do not have the revup. The mrev2 gives you more noticeable gains if you HAVE the revup motor, depends on what other breathing mods you plan to do too. And since your up north, be sure to the copper or isothermal spacer.

 

^^^^ why those two and not an regular one? Not arguing just want to know the theory behind it?

 

Test pipes also have a reputation for smelling bad. I've followed one or two and can attest.

WRT the MD iso thermal question:

The new Iso Thermal system combines our aluminum plenum spacer with thermal management components that substantially reduce upper and lower plenum temperatures. Cooler intake air temperatures increase air density, reduce the tendency for detonation (ping) and that increases engine power.

1.
The first component is an Aramid thermal isolating gasket that is installed between the lower plenum and intake manifold. By installing the Iso Thermal™ Aramid gasket between the intake manifold and lower plenum the heat transfer is significantly reduced and both the upper and lower plenum assembly run at much lower temperatures.
2.
The second component is a throttle body Coolant Control Valve (CCV) that allows you to heat (or not heat) the plenum assembly. With local weather temperatures below 55’F the valve is left open. In warmer weather the valve can be closed for maximum performance benefits.
3.
The third thermal management component is the new Iso Thermal plenum internal supports. The plenum internal supports are self retaining and self sealing.

The fourth thermal management component is the Copper Throttle Body heater. It's an optional plug and play, set and forget component that can be used in place of the Coolant Control Valve (CCV). It doesn't matter how hot or cold the weather is, you don't have to adjust a valve based on the season or ambient temperatures. Just install it and the throttle body remains heated and the plenum remains cool.

 

goood info....just curious...the iso thermal spacer is different doesnt include CCV or is that exactly what it is. When i buy the iso thermal spacer is there anything i have to buy for the throttle?

 

If it snows where you live, get the copper kit so your throttle body doesn't freeze.