Mac Headers and Loudmouth Exhaust
Thread Starter
Joined: May 2005
Posts: 1,410
Likes: 11
From: Port St. Lucie, Fl
Mac Headers and Loudmouth Exhaust I was thinking about putting Mac Mids ceramic coated w/ y pipe and cats on my 2002 WS6 Auto, Are these headers any good as far as flow and power. I know they have good ground clearence.What Kind of 1/4 mile times should I see. I also have Yank 3200 stall slp lid and Loudmouth exhaust on the car. Thanks for input.
I think they are good. I think macs make more midrange TQ than the long tubes, but the LT's will have more up top. I think you should see a 1.5-3 MPH increase, but every car is different. Macs, ORP, cost about 500.00 +, , you might as well get Pacesetter LT & ORP for the same price, good quality for the money.
Sorry , I forgot you needed to run cats, your car should sound good with the LM ,headers and cats, It'll take some of the rasp away.
Overall, Macs are pretty good.
With some DR's i'm thinking low 13's
Overall, Macs are pretty good.
With some DR's i'm thinking low 13's
Originally Posted by corvet786c
Thanks for the info, but I was maybe hoping for Low 12's in combination with my Yank 3200.
Lows 12s can be tough to achieve, but if your car was a good runner before, it's possible, but I think you'd have to achieve 1.5 - 1.6's ft times at the least.
On The Tree
Joined: Feb 2002
Posts: 187
Likes: 0
From: Chitown
Your setup sounds very similar to mine.
I have been very pleased with the Mac headers...but went with the off road Y. Before the headers went on the car I also ran a loudmouth. It was replaced with a factory dual/dual off of a firehawk (stealthy quiet), and a cutout.
The performance gain was nice. Before the headers the car was very easy to hook, even with the converter. After the headers, good bye traction. I am pleased with the way the car sounds through the catback and it sounds great with the cutout open.
I am still trying to get the car to hook the way I want it too. Plan on a set of drag radials if you want mid 12's. I also had to instal LCA's due to wheelhop...plan on that.
I have been very pleased with the Mac headers...but went with the off road Y. Before the headers went on the car I also ran a loudmouth. It was replaced with a factory dual/dual off of a firehawk (stealthy quiet), and a cutout.
The performance gain was nice. Before the headers the car was very easy to hook, even with the converter. After the headers, good bye traction. I am pleased with the way the car sounds through the catback and it sounds great with the cutout open.
I am still trying to get the car to hook the way I want it too. Plan on a set of drag radials if you want mid 12's. I also had to instal LCA's due to wheelhop...plan on that.
11 Second Club
Joined: Feb 2003
Posts: 5,524
Likes: 1
From: The South
You'll probably be mid 12's or a little better. In a '98 with 3500 stall, ET streets, !FSB, lid, basic weight reduction and full exhaust on 1.72-1.75 60's I ran 12.6. Drop at least a tenth for yours being newer and having an LS6 intake stock and that's 12.5. My car has never been especially fast compared to others with similer mods either....
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Thread Starter
Joined: May 2005
Posts: 1,410
Likes: 11
From: Port St. Lucie, Fl
Yea, I just purchased Mac Headers w/ y pipe and Cats, I have Yank 3200 Stall 2754017 Nittos and Custom handheld tuner from Vinci Hi Perf. What kind of times do you think I will have with this set up. Oh on a Loudmouth exhaust
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TECH Enthusiast
Joined: Feb 2005
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Hi
I just installed MAC headers and cat Y pipe on my 98 Z28. I was supprised at how much power/torque I gained. It was realy nice. They are a good choice.
A bit of a warning. If you are worried about ground clearance, it is difficult to use a catalytic converter on the driver's side of any 4th gen F body. Unfortunately there is not much room at that location. It is unavoidable, but the cat will hange down quite low. My car is stock ride hight and I scrape that cat on speed bumps all the time. You realy won't gain much clearance over long tubes. On the other hand, if you can use the ORY it will give you alot more clearance.
Also, the collector on the Y pipe comes down far enough that you might not be able to get the tunnel brace back on. I had to leave mine off. I think the name "true fit", is a little misleading, as they pretty much have all the querks that long tubes have.
JA
I just installed MAC headers and cat Y pipe on my 98 Z28. I was supprised at how much power/torque I gained. It was realy nice. They are a good choice.
A bit of a warning. If you are worried about ground clearance, it is difficult to use a catalytic converter on the driver's side of any 4th gen F body. Unfortunately there is not much room at that location. It is unavoidable, but the cat will hange down quite low. My car is stock ride hight and I scrape that cat on speed bumps all the time. You realy won't gain much clearance over long tubes. On the other hand, if you can use the ORY it will give you alot more clearance.
Also, the collector on the Y pipe comes down far enough that you might not be able to get the tunnel brace back on. I had to leave mine off. I think the name "true fit", is a little misleading, as they pretty much have all the querks that long tubes have.
JA
