If you have the budget I'd get Kooks. If not then try the MACs. Heard good things about the MACs lately, but I could only throw Kooks on my car if I were to put them on...

 

Yep,I also like Kooks.

 

Kooks or American racing...

 

American Racing = Great headers, BUT, and that's a BIG BUT, they put the front O2 sensors in the WRONG place for the '99-'04 Mustang. Take a look for yourself:

http://americanracingheaders.com/99_04Mustang_Catalog.htm

Sorry, but that sh!t don't cut it for tuning. WTF were they thinking???

If you purchase these headers, it's imperative that you move the O2 bungs into the collectors. I'm not quite sure why they continue to produce them like this. Maybe someone can show them this (tho I'd imagine it's already been brought up).

 

Maybe I should have asked the question differently. WHAT SIZE? the 1 3/4 or the 1 7/8. Everything I have seen shows the 1 7/8 is the best. I know I may loose a little on the bottom but the top gain looks to overshadow the low side.

 

I have Stainless Works, BUT they make you pretty much buy their whole kit, unlike their other kits, which is BS. Overall, their kit is sexy, performs perfect, and sounds awesome. You just gotta pay to play with it. :-\

 

kooks

 

I know I put a set on a ws6 the same issue. What size ?

 

BLAH!

I didn't know that! I have a set of OLD Kooks with the 02's like that. Trying to tune was a joke, I moved them shizzles down to the collector and was 8712398749274 x better

 

Not sure James, I'll have to ask.

 

American Racing here...

 

Love my Kooks 1 3/4.

 

I have the 1 7/8 kooks, fit great for such a big header

 

I have the kooks, they fit well and don't leak.

 

I have always been afraid of long tubes. I was under the impression to remove the tranny you have to remove the headers. Seems like a headache for the HP you get. By the way what type of gains are you guys seeing from them.

 

You shouldnt have any problem pulling out the trans with longtubes if you have a T-56 since u can unbolt the trans from the bell housing.

 

my car came with BBK from the previous owner, but if i had to choose another set KOOKS all the way. know two people who have them and they are by far the best sounding headers.

 

What about ground clearance for a one that has been lowered 1.5 inches? Which one is best for that?

 

Kooks.

 

why would the kooks headers be better than the mac's? I want to put long tubes on my car

 

Quality. Fit, finish, welds ect. The Kooks are also Stainless, not sure on the Macs...

 

Definately Kooks. They are not cheap by any means though.

 

x2 ! i wish i would have had the $$$ i have bassiani they were a pain in the *** to put on. & had to clearnce the body around them air hammer with a round flat bit FTMFW !!

 

I just bought a set of kooks cant wait to get them in over winter. On a side note any retuning necessary when going to LT's ? Mods in my sig. Sorry for the hijack.

 

I would have it checked, sometimes depending on o2 location, changes o2 switch time are needed.

 

My tuner said its always good to recheck the a/f when installing headers.

 

Yeah i just have some other tuning needs that need to get done as well but not sure it will be all ready to go at the same time. Ill check it on the street befor and after via my wide band. If it looks wacky ill hit the dyno Thanks for the heads up

 

I have BBK's and think that they are good for what you pay for them. Whenever I have the money I plan on doing a full stainless works system because my current set up with a bbk off road x pipe and stingers is REALLY loud

 

I am going to say the ARH will have better ground clearance then the kooks. I know mine tuck up extremely well and I have not touched them once and I am lowered on coilovers and have had the car low enough that I would touch the inner fender on decent bumps. Hit the k-member a few times and scraped it, but the headers are untouched.

My vote is for them, have the 02 sensor location moved, I had mine put in the collector. I have run Macs on mine also and they were good, but ARH is much nicer. BBK's have been run on my brothers Mach 1 and they are so so, wouldn't run them again.

Adam get a retune, you will need adjustment for the cold idle(transfer delay function for the 02's???) and probably some Air fuel tweaks. Try Eric or Lund this time :tip:

 

In my experience, you will need a retune. When I added Long Tubes, my A/F ratio richened up over 1 full point.