true duals on an mn-12... March 26, 2009, 09:29:20 PM Don't feel right posting this in the engine tech forum cause it's not a fox, but, does anybody have any insight on dualing out an mn-12 bird? I called a few shops today, and most want around 500 bucks (since my first self - installed exhaust system didn't go too well, this seems the best way to go right now). The shops say that they use 3 inch piping from the cats back, delete all the merging pipes, run my choice of ler, and polished stainless tips. Does this price seem a little steep, I mean without swapping manifolds and whatnot? Quote Selected
true duals on an mn-12... Reply #1 – March 26, 2009, 09:34:01 PM i paid 434 for the exhaust alone on my 99 cougar all 2.5 inch stainless steel from the cat back. Quote Selected
true duals on an mn-12... Reply #2 – March 26, 2009, 09:37:33 PM You know thats not really out of the ball park. No H or X pipe though? Wouldn't you want to equalize your exhaust pressure? Quote Selected
true duals on an mn-12... Reply #3 – March 26, 2009, 09:38:54 PM Sounds about right then, the qoute was with flowmaster 50 series lers ( personally, I don't really care for flowmasters). Thanks for the info. Quote Selected
true duals on an mn-12... Reply #4 – March 26, 2009, 09:40:04 PM Quote from: 86XR7project;264146You know thats not really out of the ball park. No H or X pipe though? Wouldn't you want to equalize your exhaust pressure?He said he would cut out the merging pipes and run straight back (well surely not exactly straight lol) to the s and tails.It's the 3 inch piping thats strikes me a little odd. I guess it would be all custom welded stuff. Quote Selected
true duals on an mn-12... Reply #5 – March 26, 2009, 09:48:49 PM Since Saturday I will be Cougarless:mad: Figured i would do a few mods to the bird. May get some lowering springs too in the near future. Quote Selected
true duals on an mn-12... Reply #6 – March 26, 2009, 10:09:35 PM The mn-12's don't have room for two pipes. The stock setup is almost molded to the bottom of the car. It was to aid in areodynamics.If its a v-6, there is no need for a crossover pipe. I don't know if it would help a 4.6 or not. Even still, a 3 inch pipe should be fine for either motor. Quote Selected
true duals on an mn-12... Reply #7 – March 26, 2009, 10:53:09 PM I had true duals on my old 'Bird. 2.25" pipes from the manifolds back with a DI/DO Magnaflow ler. IIRC it was a little over 500 to get that done. Quote Selected
true duals on an mn-12... Reply #8 – March 26, 2009, 10:57:35 PM Did you notice a difference in power? How did it sound? Quote Selected
true duals on an mn-12... Reply #9 – March 27, 2009, 11:07:55 AM Yikes. I won't EVER buy an MN12. The exhaust alone looks like a PITA Quote Selected
true duals on an mn-12... Reply #10 – March 27, 2009, 09:20:53 PM Quote from: 20thanniver-ls;264178Did you notice a difference in power? How did it sound?It made a difference, but the cats were dying and smelled like rotten eggs so I know they were restricting it.Here's an old vid of it.http://www.youtube.com/watch?v=heKAROb7EqcQuote from: 86XR7project;264268Yikes. I won't EVER buy an MN12. The exhaust alone looks like a PITAThat why I sold it after I got the Mk 7. The screwed up exhaust is just the beginning with those. lol Quote Selected
true duals on an mn-12... Reply #11 – March 27, 2009, 09:32:14 PM I paid $700 for 2.25 duals with x pipe. I provided my own cats and lers.http://www.supercoupeperformance.com has a dual exhaust kit if I remember right. Also, flowmaster makes a catback, but it is not dual. Quote Selected
true duals on an mn-12... Reply #12 – March 27, 2009, 10:21:06 PM I have the Dynomax cat-back kit on my '96. I installed it myself and couldn't be happier with the tone; it has a very mellow and smooth sound.After four years, however, it is beginning to rust from the inside-out. I never even considered true duals after seeing the underside of the car for the first time. I've read about the nightmare of installing headers on an MN12, so I can't imagine anything else would be easy. You can drop about $280 + shipping for the Dynomax kit and install it yourself. That is, of course, unless you're dead set on the idea of true dual exhaust. Quote Selected
true duals on an mn-12... Reply #13 – March 27, 2009, 11:20:17 PM Well I really just want a good sound, And yes I have thought about the dynomax cat back, and it is cheaper.... Quote Selected
true duals on an mn-12... Reply #14 – March 28, 2009, 07:53:30 AM Dynomax sounds awesome too, but I'm biased my, dad used to design exhaust systems for them. :D Quote Selected
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