Hey all, im looking to get some mid length headers. Ive been trying to read up on the rk sport, as&m and macs. Ive heard pretty much everyone loves their macs. also heard that the rk sports dont have a D port. Is this correct? Are theyre any negative effects of not using a matched D port. I know the as&ms are the best mids from what i hear, but i dont think i want to spend 750 on headers. The rk sports are on sale for 450 so thats around the price of the macs. I know the macs give good gains but im thinking i should get the rk sports because of the bigger primaries to be prepared down the road. any input would be appriciated, thanks! any dyno gains with each would be great to know too!

 

I like my MAC's a lot.

Rksports are AS&M clones, I believe, but I'm not sure that the coating or the quality are as good (I would assume not at the price). The debate will rage as to whether you will actually need the 1 3/4" primaries, but that's been more than covered on this board with no real solution.

The best evidence that I have seen for the MAC's were dyno numbers from Advanced Induction that showed equal HP and Torque from MAC mids and Long Tubes on an identical head/cam set up. If MAC's are indeed a limiting factor up to 400 rwhp, it must not be significant, but who knows.

Plug access on the MAC's are the best from what I have seen and read (AS&M/rksports look terrible), and installation was about as easy as you could hope for, although the rksports may not be too difficult to install either.

I don't think that you would be making a bad decision either way.

 

Are Mac Midlengths California legal???

 

id say they are if they have emissions hookups

 

Another vote for Macs, I love mine and I belive they are legal in Cali, and they have all the emissions fittings.

 

do macs come with a y-pipe?

 

I just installed AS&M's, and they were a world of difference over my edelbrocks. The better coating, the larger primaries and the superior design gave me a SOTP gain. I vote ASM, but they're expensive.

 

they do come with a y pipe but you have to get your own cat. They do sell a catted y too but it cost alot.

 

I'm buying a set of jet-hot coated mac's so i'll tell you how the install goes. From all the reading i did it seems mac and as&m's are the best in the mid-length department (i could'nt find much on rk's) I decided to go with mac becasue they are a little cheaper and it seems everyone is happy with them and the ease of install.

 

Yeah that'd be cool if they are legal here. Prefer longtubes, but I for sure didn't want shorties. Can't wait to save and get em.

 

I love my macs. Plug access is GREAT. Taking them out would probably take ten minutes with macs. RK sport, I've never heard anything good. I heard they suck. AS&M I hear are awesome performers but the install and plug access is a joke. Plug access is important to me. If it is at all to you, go with the macs.

 

wheres a good place to get mac mids..

 

AS&M
Spark plug access is a hell of a lot better then the stock exsaust. 8&6 is a little tiet, But it's not that bad.

 

I could not have said it any better...If you don't mind the 1 5/8 primaries and have no plans to go above 400rwhp, then go with the MAC's all the way...Good price, great gains, fairly easy installation, great plug access, and the Jet Hot coating still looks like brand-new on mine after 2 1/2 months (knock on wood!; although some have reported it to start rusting away after just one month ).

Mike

 

I always hear about how Macs have better access than the AS&M's. I would think a small primary tube would net a better access. Is it that or just better design? Just curious. BTW-I love my AS&M's.