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Just shopping around for a header right now. Is the best price on the website? Any gb coming up or coupons? Thx!

Quote:

Originally Posted by SamGam (Post 2232717)

Just shopping around for a header right now. Is the best price on the website? Any gb coming up or coupons? Thx!

That all depends on how many people want the header. Group buy maybe possible :D

Quote:

Originally Posted by aFe POWER (Post 2232660)

Both the underside and actual stock exhaust manifold covers fit on our header.

Now THAT's interesting. First time hearing such feat for twins aftermarket headers. I guess this might rise a bit interest from chaps @CA. :)

I have two questions as below.

1. Did I need to buy any additional manifold gaskets for install?

2. Did you suggest to change the overpipe together or it is not
necessary?

I also interested in group buy.
Thanks.

Quote:

Originally Posted by cslntuee (Post 2235046)

Thank you for the questions :thumbup:

1. We always recommend replacing the gaskets when replacing the exhaust manifold or upgrading to a header, this way you have the best seal possible.

2. Since you are doing the headers, a overpipe will help further increase performance a little bit and reduce restriction. Plus while you are down there, might as well upgrade the overpipe. We know that the headers are the biggest restriction in the exhaust system for the twins.

What two states aren't they legal in?

Quote:

Originally Posted by Yap (Post 2237605)

What two states aren't they legal in?

California, for starters.

Quote:

Originally Posted by Yap (Post 2237605)

What two states aren't they legal in?

California and New York unfortunately :(

Still waiting for sound clips...

Quote:

Originally Posted by x1UP (Post 2238715)

Still waiting for sound clips...

Quote:

Originally Posted by aFe POWER (Post 2237924)

Commiefornia and New USSR unfortunately :(

Fixed.

Quote:

Originally Posted by aFe POWER (Post 2237924)

California and New York unfortunately :(

Technically, you can't mess with the stock emissions system in any of the 50 states due to fed regs except in specific situations:

Quote:

Rules for Replacing Converters
In 1986, the U.S. Environmental Protection Agency issued new guidelines for the construction, efficiency and installation of aftermarket catalytic converters. All CleanAir converters listed in this catalog have been designed, tested and manufactured to meet this policy.

In addition, CleanAir converter listed in this catalog is appropriate for use under the current requirements of the California Air Resources Board (C.A.R.B.).
E.P.A. guidelines state that replacement converters may be installed only in the following situations:

1. The vehicle is missing a converter
2. A state or local inspection program has determined that the existing converter needs replacement
3. Vehicles manufactured prior to 1996 must have more than 50,000 miles, and a legitimate need for replacement must be established and documented
4. In cases of OBD Il-equipped vehicles (1996 and later), the O.E. manufacturer's 8-year/80,000-mile warranty must have expired and a legitimate need for replacement must be established and documented.
Please note that Federal law prohibits removal or replacement of a properly functioning O.E. converter.

When replacement of the converter is appropriate (as outlined above), the E.P.A. further requires that:

1. It be installed in the same location as the original
2. It be the same type as the original (i.e., two-way, three-way, three-way plus air/three-way plus oxidation)
3. It be the proper model for the vehicle application as determined and specified by the manufacturer
4. It be properly connected to any existing air injection components on the vehicle
5. It be installed with any other required converter for a particular application
6. It be accompanied by a warranty information card to be completed by the installer.

Is this the only aftermarket header option which can fit stock exhaust manifold covers? anyone knows?

Thanks.

Only one i've heard of such. IIRC there were posts about PTuning's one, that they had at some time possible plans of developing own oem-look-alike heatshield .. but i guess it never resulted in actual product. That's it. So for others .. about the only idea that crosses my mind is to have them dark ceramic coated to look not shiny/clearly aftermarket ones .. or go for Perrin 3" catback and leave header & frontpipe with cats intact to go for 100% legal setup in all the states. Yes, that 3" one will be too loud together aftermarket catless header, but with stock one it should be noise-wise on par with 2.5" unresonated one, and together with tune bring most gains not touching both stock cats.