I dont want to buy full race headers!...
not to be controversial or anything... 
I recently installed a ported/coated stock mani on my IX (OMGWTF ported stocker is the best EVAR!!11!1!), and didn't notice any gains from it at all (granted, I did not install it, get tuned for it, and then immediately re-dyno...
)
Could not even notice a increase in spool with it - and believe me, I was looking for it...
After adding up the $200 it takes to get it ported/coated, the $$ for installation (unless you are doing this yourself), and the $$$ for the retune (hopefully you can throw on some other mods as well before the tune) - IMHO, the $$$ could have been better spent elsewhere... that was ~ 3 - 5whp I could have done without.
And before someone says - "but Buschur dyno'd the ported hotside/stock mani/O2 housing to show XXX gains..." I think we all know that the O2 housing is going to make about 80% of those gains.
I recently installed a ported/coated stock mani on my IX (OMGWTF ported stocker is the best EVAR!!11!1!), and didn't notice any gains from it at all (granted, I did not install it, get tuned for it, and then immediately re-dyno...
)Could not even notice a increase in spool with it - and believe me, I was looking for it...
After adding up the $200 it takes to get it ported/coated, the $$ for installation (unless you are doing this yourself), and the $$$ for the retune (hopefully you can throw on some other mods as well before the tune) - IMHO, the $$$ could have been better spent elsewhere... that was ~ 3 - 5whp I could have done without.
And before someone says - "but Buschur dyno'd the ported hotside/stock mani/O2 housing to show XXX gains..." I think we all know that the O2 housing is going to make about 80% of those gains.
Forced Performance just released their new exhaust manifold and its probably the strongest one out there, made of D5S, if you dont know what that is, well its really badarse metal. there just under 330.00
Link
http://store.forcedperformance.net/m...de=DSM-Exhaust
Link
http://store.forcedperformance.net/m...de=DSM-Exhaust
It will not work.
You should just get your stock ported and coated.. If you are wanting the looks out of a tubular manifold then you should just get a polished heatshield to go over it.. This way your motor looks better than the stock rusty manifold and you have gained power.. along with not having to worry about cracking a cheap manifold or spending a butt load of money on a good tubular manifold such as the full race one you mentioned.
