Is $170 a deal for macs?
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Mac mid lengths are a bolt in with no clearance problems, no road clearance problems, and maybe make 5 to 10 rwhp less that full headers.
Whats not to like here. I plan on getting macs for my car next year. They will do everything I need and with half of the issues.
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The mac-mids do not have provision and the egr which both were shaved off. Let me know guys, thanks!
yeah 170 is a good price. I run em and they got some good power for my head & cam setup.
LOOK IN THE EXHAUST FAQ for a dyno'd comparison between Mac mids and LTs. THERE IS A 5-8RWHP DIFFERENCE under the curve, almost nothing on the top end.
Here, I'll post it for you :
.22 and 1.5 MPH was the gain swapping Macs/Mac 2.5" ORY-> Grotts and 3" Y pipe at the track.
PLEASE STOP TELLING PEOPLE MIDS ARE NOT MUCH BETTER THAN STOCK MANIFOLDS.
I never type in caps, but this kind of thing really irks me - people read here like it's the gospel truth so please do your part to make sure they are educated with the correct info !
I personally made 410rwhp/415rwtq through Mac Mids, Carsound cats, LS1 intake and a baby 222/224:114 cam with 5.3L heads.
Rob (Bad30th)
Last edited by Bad30th; Nov 9, 2006 at 02:32 PM.
More than likely, leaning it out a little would have improved the difference even more - however performance-wise, Mac mids are within a small margin of any LT's out there. Much closer to LT performance than stock manifold/shorty performance.
...and yes I agree LT's are better for overall performance, but after seeing post after post bashing them when the Exhaust FAQ clearly posts this graph I thought I'd bring it up so anyone reading this thread would get the real info.
Rob (Bad30th)

