Did you have 2.5 inch collectors or 3 inch collectors???? and which would be better for me 2.5 or 3 ? My car is stock but have many to do mods in the future like head swap...stangman said:i've had a full mac setup several times. i LOVE the sound, no complaints at all here
GT 5spd said:Did you have 2.5 inch collectors or 3 inch collectors???? and which would be better for me 2.5 or 3 ? My car is stock but have many to do mods in the future like head swap...
ok thanks manstangman said:2.5 will do fine for you, that's what i had on mine. there is no benefit to having the 3" collectors & plus it won't seal as well as the 2.5, that's just me though.
droptopponynj said:put the headers off for awhile...its a waste right now. put the money into the pi swap or some gears, suspension stuff. you will get very little gain on a stock npi gt with headers..learn from my mistake.
stangman said:i got 13rwhp out of them (mustang dyno). it's a good prep mod, especially since he's planning a PI swap
5spd GT said:You got the PI heads though...but I think it would be good for him to get them for the future. The only things I'm worried about for him is ongtubes will get a better midranging power over the shortys (so the "pro" is more power) but some forget to mention the cons of it which are buying a matching mid-pipe (more money and aren't able to use the stock mid-pipe) along with ground clearance issues (especially on a lower car) and also the difficulty of install is "stepped up" quite a bit when trying to get longtubes in. It also can cause heat-soak issues and steering column clearance/rubbing issues. The potential purchaser has to ask themself is the extra midrange worth it? So are any of these problems like this on the 4.6L...because I know you run into those problems in the 5.0L cars...
stangman said:no that was on my last 98, i got 19rwhp (mustang dyno) on my 03. & like i said before in other threads, i've had 3 set's of LT's & no problems at all with them (all mac headers also). also the install is EXACTLY the same on any header on a 4.6 motor & my car is lowered 1 1/2" with no problems with clearance. not to say he won't have problems, but on the cars i've had lt's on i've never had a clearance issue on them (all lowered 1 1/2"). i've scraped the prochamber cause i didn't have it tucked up high enough, but never trhe lt's
5spd GT said:That isn't to bad of a gain on non-pi headed car...thanks for the correction...I thought you were talking about your 03 in your sig. I have seen clearance problems first hand with longtubes...but atleast you "disclaimed" it
Gunfighter said:LTs + ProChamber + flowpaths should sound pretty amazing. Granted, I've heard alot of people have had quality/fitment issues w/MAC products, but i think your best bet for little to no worries on the install will come from using all the parts from the same manufacturer. Customer service should be more helpful, too , considering you bought a complete set up from them
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