Hey guys, sorry if this is the wrong section here, but I wanted to see what people would be willing to pay for a used set of ceramic MAC Mid-Lengths and a new off road y-ppe. Again, USED headers, and NEW Y pipe. I am thinking about selling mine, and I just wanted to get an idea of what people would be willing to throw at those. This is hypothetical as of now, so I didn't think I should put it in the classifieds.

http://www.macperformance.com/store/...roduct_ID=1270

That is the product page on the MAC Website. They are in good condition, but obviously the headers look used. If I could get some input on this, that would be geatly appreciated.
Thanks,
Matt

 

No one has any input?

 

I wouldn't pay more than $100.

 

Unless they were free, I personally wouldn't bother...and if I got them for free, I'd turn around and sell them. I just don't see the point to mids. They're not worth the difficulty of installing IMO. IMO, it's stainless longtubes or nothing. Do it right or don't bother...but that's just my opinion.

If, for some reason, you're really set on them...which I can't possibly even begin to recommend...don't dare pay a cent over $200.

 

save yourself the hassle of install and keep your stockers until you can do it the right way the first time. Money saved, time saved.

 

i paid 250 shipped for mine. dont listen to these guys. on a stock cubed car, they are just fine and flow nearly as well as lt's. but now that the xs stainless headers are as cheap as they are (ebay headers) i would go with those. but macs are a good header for our cars

 

Shorties flow just as well as mid lengths. You're missing the point. The point of headers is NOT to increase flow. With that logic, you can port your stock manifolds to match the flow of headers. Guess what? You won't see much horsepower at all. Who here thinks you're going to gain 25 rwhp from porting the stock manifolds?

The gain in headers come from scavenging. The longer the header, the more it scavenges. You need the headers to be long or else you'll get no gains down low. That's the problem with shorties. If you could rev your car to 12,000 rpms, shorties would work as well as longtubes for peak horsepower, but it doesn't work like that in the real world.

Mid lengths limit the exact thing headers were designed for - scavenging. The FACT is, on a stock cubed car, mid lengths cost you 10 rwhp over a good longtube like QTP's and 5-10 rwhp over a more basic longtube like Pacesetters, and when headers only add 20-25 rwhp to begin with, you're costing yourself up to 50% of the gains of headers. That's HUGE! And just imagine, as you put more and more mods into the car, the amount of horsepower you're sacrificing gets bigger and bigger.

You're going to pay $200 for a set of used midlengths that don't scavenge sufficiently enough when for less than $400, you can get a set of longtubes that'll seriously outperform the Macs? It makes no sense to me. It's the half-assed route and sometimes "good enough" just isn't good enough.

I mean really, I can't honestly think of one reason to get Mac mids aside from "getting a good deal on them," which is one of the worst reasons to buy something. It's like going to a store and buying a TV because it was on a big discount, even though you didn't need a new TV and you didn't want the model to begin with. Buying something because it's a good deal is never a good idea.

Sorry to sound so harsh, but I can't think of a reason to buy Mac's. I'm just trying to save the OP a potential headache.

 

I think I sold my old set for somewhere between $150-200.

They came on the car and worked just fine for me - made good power too.

Then I decided to step up to Kooks while I had it torn down...

 

have you actually ever used mid lengths? ill save everyone the suspense: no. plenty of people have made great power on mac mids. are long tubes better? yes. better by paying 4 times the price? not in my opinion. i havent hit the dyno, but i picked up 4 tenths and 2 mph at the track just from the headers and y pipe. sounds like they make power to me

 

No, I haven't used midlengths. I know better. Shorties make power, too. It doesn't make it a good decision. I know they make power, but the problem is they only make half of what they should.

 

Shorties are not comparible to mids. Mids make damn near close to long tubes, I've had both.

 

I've had both and I was happy with them until there were more LTs that were similar in price to the MACs. I agree that you'll be a little short on power but it wouldn't be too much. You'll obviously have better ground clearance with MACs and won't be rubbing on the floor or K-member like you might have with LTs. I liked mine for the price. With LTs out there like Pacesetter though it makes it hard to justify mids' over LTs though.

You might find someone willing to pay $200 for a complete set-up but probably not much more.

 

Yes they are. Mids make around double what shorties do, longtubes can make around double what mids do. It's a pretty good comparison. Especially since the comparison was about FLOW, not SCAVENGING, so you took it out of context Shorties, mids and longtubes flow the same. Longtubes just scavenge the best.

 

No way. You won't have any better ground clearance with Macs and longtubes, with the sole exception of SLP's. The lowest part of the exhaust is the y-pipe, not the collectors.

 

Roll your eyes if you want, not even your super ultra high hp, merge collected QTPS are gonna make double the power Macs do.

 

I'll agree with that. The Y pipe on my Mac set up hung pretty low.

 

They'll easily make 10-15 rwhp more, especially tuned. I've seen QTP's make 9 rwhp peak over a set of Pacesetters with significantly higher gains in the low end, so Macs will see an even greater differential. As the mods increase, so will the amount of horsepower sacrificed by going with Macs. If you go H/C, that 10-15 rwhp is going to turn into more like 15-20+ rwhp, and that's almost as much of a set of headers add on a stock cubed motor. The sacrifices get huge. Macs = a waste of money. Longtubes are so cheap anymore, it makes no sense not to get them.

 

save your money and get some kooks youll be happy you did





back to the op. i think he trying to sell his not buy some, u might be able to get 200 for all of it i would sell them separate 100 for headers and 200 for y pipe

 

Where are you getting this crap from? lol

 

Umm...dyno graphs and common sense. Do you have Mac mids? If you do, I understand if you feel the need to pimp the product you've spent your money on, but honestly, there's no good reason to ever buy them. There are plenty of negatives on a stock f-body, and the more mods you add, the more negatives arise.