[UrbanRedneck]

Who here runs the Mac longtubes (or 3/4 tubes lol)? What are your opinions on their quality? And anyone have any info on power gains?

Does anyone have pictures of them installed? Or better yet, with the Brenspeed X pipe? The ONLY picture I can find is the same stock photo that everyone uses.

[Jucostud]

only thing i can post for you is a video that has a little shot of them...

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[05roush0090]

sounds nice. what cams is that car runing?

[07stanggt]

stage II thumpr cams.

[Mickey]

I have them but havent heard my car start bc i have been gone for four months now....let you know soon..

[UrbanRedneck]

anyone else? Noone here runs these?

[07stanggt]

Plenty of people run them i have sold quite a few. What is your qeustion.

[07 s197]

i have them and love'em. I wouldnt recommend 1 3/4 longtubes unless you are going f/i. I didnt benifit from them until after the blower. Before the blower i had a c&l racer intake/brenspeed 93 tune, steeda pulleys, mac 1 3/4 lt's, off road prochamber & exhaust, 373 gears and only dyno'd 289/303. The same day my wife dyno'd her stock gt/cs and put down 252hp. With all those mods i onlt gained 37whp over a stock gt. Then after both got a novi 2200, only thing different from the two was i had the mac lt's. She put down 452 and i did 484, so the lt's gave me 32whp alone after the blower.

[leebunnyz]

all cars are different...now if you had stock dyno run with your mustang and then with yours mods you can make a good argument. mustangs are dynoing between 250-275WHP, all mustangs are different.

[07stanggt]

Well he is right and he probably lost some power with the 1 3/4 until he got the blower. basically 1 5/8 up to 500 at the crank then go bigger.

[07 s197]

Originally Posted by leebunnyz all cars are different...now if you had stock dyno run with your mustang and then with yours mods you can make a good argument. mustangs are dynoing between 250-275WHP, all mustangs are different.

i understang that, but you must not have understood the post.

my modded car 37more whp than her stock car
i lose all mods except the lt's
both cars get the same kit with same tuner
my car is still up 32whp

unless your trying to say that from judging from the before and after dynos that a intake/tune/pullies is only good for 5whp?

the point is 1 3/4 longtubes probably wont yeild as much hp if any on a lightly modded n/a car for the money you will spend

[UrbanRedneck]

Originally Posted by 07stanggt Plenty of people run them i have sold quite a few. What is your qeustion.

My questions were all in the original post. How is the quality/fitment on them, has anyone actualy dynoed before and after with them, and does anyone have any pictures of them installed.

And, since you sell both, and have probably held both, are they the same, or similiar, lenth as the Kooks, or are they shorter or longer?

[Mickey]

Kooks are longer...

[07stanggt]

I have held them both but dont remember really. I think the kooks are a little longer like mikey said.

As for dynos on them i have seen a couple but usually on heavily modded cars. your looking at about 9 to 12 hp on a bolt on gt i think. but like kooks i think its good gains through most of the rpm range.

The one thing about MAC is they are 1 3/4 another downside is your basically limited to the off road prochamber. I think that brenspeed and pacifica are selling at off road x pipe for the mac long tubes, but then i heard someone say that requires some modification or something. Either way its off road or you need to do some modifying.

The thing i like about kooks is the 1 5/8, the warranty, and the options with catted mid pipes or off road mid pipes and x or h. No matter what you bought today, in a year from now if you want catted legs or off road legs it cost your about 200 bucks, if you wan a x pipe or h pipe same thing. Thats also good for resale value. Like if i want to sell my kooks catted x pipe and a guy said well i want an H pipe, fine order it from kooks seperate. Its just options down the road.

Anyway, i dont know why im comparing, you didnt as that, forgive me i sice and druged up right now.

But for the money mac is hard to beat, they come ceramic coated.

[UrbanRedneck]

Originally Posted by 07stanggt But for the money mac is hard to beat, they come ceramic coated.

Yeah that is why I am considering them. Kooks is out of my price range. But I cannot decide between cheaper options. The idea behind the Mac ones is that they should fit easy since they aren't full longtubes, and I can get them with an offroad X pipe and 02 extensions for 699 from brenspeed, an easily splice a pair of pypes cats in. I bet I could modify the rear part of an H pipe to work if I wanted too also. Since they are mid-lenth I have more room to play with that sort of stuff. The downside is that they aren't a full longtube, and like you said, are 1 3/4. But, on the other hand, I'm not sure that the 1 3/4 primaries would really have that significant of a negative effect since it is still feeding 2.5 inch pipes. Not sure.

As you know I was also considering JBA and Hooker, both are about 500-600 for headers alone, but are both designed to use the stock H pipe cut off just ahead of the hangers. Looking at pictures, I am pretty confidant that I can modify my Pypes X pipe to fit, and splice in some cats, but I am not positive, and obviously these have less pipe to work with after the collectors. I guess I'd have to find some way to get measurements of the collector spacing and measure my X pipe at the same location. So that I am NOT sure of, whereas I am sure I can do it with the Macs. The upside to these is that they are full-lenth, and 1 5/8 primaries. But, both of them are stainless where the Mac are ceramic.

I guess there's so many ups and downs to each one, how the hell am I supposed to decide.

[07stanggt]

that fact that they are not full lenght long tubes is better. The shorter long tubes make more power throughout the entire power band. Im not lying to on that i have seen in on many dynos. Get that mac setup you will be glad down the road.

[UrbanRedneck]

I figure that the Mac setup is the closest to the kooks in design since they are both shorter longtubes, I just have no experience with their products.

I talked to seth at Brenspeed about it more today, and he said that their X pipe is a modified Pacifica part, and that pacifica is good quality. He also said that they have added the Pypes cats to it, it's a close fit but it works (which makes me wonder if it'd even be possible with a full lenth longtube like JBA). He also said that there is a slight loss in lowend torque compared toa 1 5/8 header, but it is negligible and that the 4.6 flows enough air that a 1 3/4 is ok, just any bigger would be excessive.

I was thinking it will probably be easier overall to go that route as opposed to modifying something that I am not sure will work (JBA or Hooker), and they highly reccomend them. If the pwerformance is the same, why not. I'm sure that if I ever get mor emods, cams, etc. they extra primary diameter won't hurt. I am not completely decided yet but this will be the front runner right now lol.

Now, Rich, I have a couple other questions for you. With high-fliw cats, the power loss is also insignificant compared to offraod right? And I know it will be much quieter, but it will still be louder than it was with the stock cats right?

And, what axlebacks sound good with a catted X? I want something not too high pitched/raspy, with a nice smooth, high performance tone. Preferably that sounds like a race car at WOT haha. How's Bassani race sound? I've had it with cheap chinese crap, next axleback will be high quality.

[07stanggt]

Oh they get it from pacifica. I deal with pacifica all the time. 08blackchrome got that set up from pacifica i thought he said it required some modification.

Anyway.

Yea its only like 3 more hp going off road over most good high flow cats.

Bassani is good for the money if you like it. Kooks is my preference but its a little loud.

[UrbanRedneck]

They told me that they take the pacifica piece and modify it further, I guess he meant that they fix whatever is wrong to make it fit right I assume.

Do you think Bassani Race axlebacks are louder or quieter than my Violators?

Oh and do you know what country Mac stuff is made in?

[07stanggt]

Originally Posted by UrbanRedneck They told me that they take the pacifica piece and modify it further, I guess he meant that they fix whatever is wrong to make it fit right I assume. Do you think Bassani Race axlebacks are louder or quieter than my Violators? Oh and do you know what country Mac stuff is made in?

The peoples republic of california is where mac is made.

I would say that bassani race are louder then violators, and better sounding all the way around.