This Mustang Parts Installation Guide Works For
Installation Time: 2 Hours
|Item #||Quantity||Part Number||Description|
|1.||1||310304795||Driver-side Intermediate Pipe|
|2.||1||310304796||Passenger-side Intermediate Pipe|
|3.||1||310304797||Driver-side Over-axle Pipe|
|4.||1||310304798||Passenger-side Over-axle Pipe|
|5.||2||308560782||PowerFlo Muffler (M31010)|
|2||310013919||Loud Mouth Resonator (M31011)|
|2||310013818||Loud Mouth II Muffler (M31011A)|
|10.||8||308144380||2.5 in. Exhaust Clamp|
|13.||2||302765638||Tailpipe Hanger Spacer|
Warning: SLP recommends allowing the vehicle to cool (not running) for five hours before beginning the installation. SLP recommends wearing safety glasses for the complete installation.
Remove the old exhaust from the vehicle by unbolting the 2 flanges from the H-pipe and removing the exhaust hangers from the rubber insulators.
Note:You may need to cut the old pipes in the vicinity of the rear axle or disconnect the shocks to gain enough suspension clearance to remove them.
Place the ball flange of the driver side intermediate pipe (shorter of the two) onto the driver side hpipe outlet, slide the flange into place over the studs, and loosely tighten the nuts.
Note:Tighten all clamps and fasteners just enough to hold them in place. Leave them loose until the end to allow adjustment.
Dear SLP Enthusiast,
SLP LoudMouth Exhaust Systems DO include a muffler. While it does not “look” like the traditional muffler, it is indeed a muffler by definition.
The muffler (aka resonator - actually a misnomer or ill-understood word) was designed by SLP to smooth the exhaust gas pulsations by methods of wave rarefaction to make them as inaudible / quiet as possible. This is a type of reflection muffler; Most people are much more familiar with more common 'absorption type mufflers', which typically include internal perforations, sections, and/or absorption insulation.
More simply put, a muffler exists and was designed with intent to reduce exhaust noise.
The Specialty Equipment Manufacturers Association (SEMA – www.sema.org) has staff dedicated to representing the aftermarket industry in regulation/legislation pertaining to aftermarket parts. SEMA is an excellent source for further information and/or news and updates regarding the latest laws governing aftermarket parts.
The SLP Loud Mouth exhaust system is 50 state, emissions legal. It will not adversely affect emissions. Every local jurisdiction creates and enforces their own laws regarding ‘noise’. Local jurisdictions have the ability to write more detailed and stringent laws regarding noise - but commonly do not outlaw 'replacement exhaust systems'; Unless they have their own specific design criteria for a 'muffler’, which specifically excludes reflection type mufflers, the Loud Mouth would typically be acceptable. Only actual laboratory decibel measurements are a fair measurement of a muffler’s effectiveness to quiet exhaust and should be required and completed to judge an exhaust system. Most jurisdictions do not have the ability to measure noise levels accurately. The testing is very subjective if not properly and accurately completed.
Due to the nearly infinite number of local jurisdictions, 'related noise regulations/laws’, and their high frequency of change, SLP does not participate and/or represent customers, companies, shops, technicians, or sellers in any litigation, traffic or legal matter regarding or related to the legality of an SLP exhaust system and disclaims any responsibility. It is solely the responsibility of the customer to investigate and verify whether or not SLP products are legal for use. SLP recommends checking local legislature for specific laws regarding the legality of aftermarket exhaust systems.
SLP Performance Parts