Silencers

	BOXES AND PIPES DIMENSIONS: EXACTELY AS THE ORIGINAL EQUIPMENT PRODUCT • perfect fit-ability COMP: use boxes and pipes close to the original equipment
	PIPES: 1.5 mm THICKNESS • higher corrosion protection and more pipe strength COMP: 1,4 mm thickness
	PIPES: BENT WITH INTERNAL BALL AND NOT PRESSED • regular diameter in the bending • optimal back-pressure • more engine powerful • less petrol consumption • less engine over-heating COMP: pipes bent without internal ball or pressed
	PIPES: WELDING COVERED WITH ALUMINIUM • higher protection against rust COMP: not protected welding
	END CAPS: 2,0 mm THICKNESS • higher mechanical strength • greater protection against rust COMP: 1,5 mm thickness

	EXTERNAL WELDINGS: NOT PAINTED • no useless environmental pollution • granted resistance because the painting has only an optical effect COMP: painted over for an esthetic result and with useless pollution
	BOXES: MADE WITH A DOUBLE ALUMINIUM COVERED SKIN 0,6 + 0,6 mm: 4 ALUMINION LAYERS • double protection against rust COMP: boxes manufactured by an only one sheet of 1,2 mm (2 aluminum layers)
	CLIP-ZIPS: ROUND SHAPE • better flexibility to the materials thermical deformation • higher airtight COMP: flat clip-zips
	INTERIOR CAP: 1,5 mm THICKNESS • stronger mechanical resistance • higher protection against rust COMPETITORS: 1,2 mm thickness

	INTERNAL PARTS: CLIPPED • better protection against rust • no welding dross or manufacturing waste • no internal vibrations COMP: welded internal parts
	MUFFLER INTERIOR: 100% MECHANICAL • the silencer remains intact without any internal deterioration • constant silencing in the time • no basaltic wool and poison emission in the environment • efficacy and efficiency as in the Original manufactured product COMP: basaltic wool which will disintegrate during exhaust’s lifetime
	TRADITIONAL INTERIORS: UNCHANGING FIBRE GLASS • the silencer remains intact without any internal deterioration • constant silencing in the time • no basaltic wool and poison emissions in the environment • efficacy and efficiency as in the Original manufactured product COMP: basaltic wool which will disintegrate during exhaust’s lifetime

Silencer

What is it and how does it work
The silencer is used to reduce the noises produced by the gas discharge in the internal combustion engines, in order to respect the acoustic pollution regulations.
To reduce the sound emission, the silencer generates a backpressure wave which acts in opposition to the gases emission from the engine cylinders and influences the performance at different engine speeds.
Using long and / or diameter-reduced exhaust system, low engine speeds are favored, where using short and / or large diameter exhaust systems high engine speeds are favored.
The main silencing techniques are:
1 absorption: phono-absorbent materials (usually fiber-glass) are used , which are placed inside a hollow cylinder. With this technique less noise is reduced, but there are better results on all the range of frequencies and lower reduction of power is involved; for such motivations this is the more used solution in competition engines.
2 reflection: this system is obtained dividing the silencers in several rooms using walls on which sound waves are generated. These sound waves cancel out each other and, thanks to the phenomena of the interference, the noise is reduced. This technique allows a higher reduction of the noise, specially at low engine speeds.
3 resonance: this system is obtained using holed pipes which connect several rooms and works like a musical instrument, reducing and modifying the sound.
4 mixed: this system is obtained using more techniques together, like the combinations absorption-reflection, absorption-resonance or absorption-reflection-resonance.
MTS respects the solutions adopted by the vehicles manufacturer and supply the aftermarket with products with the same technical specifications and performances of the original equipment products .

Before the replacement:
A complete check of the whole silencer equipment is necessary:
1 to avoid the substitution of only one part without solving the problem (for example it could seem necessary to substitute the rear
silencer but the reason of the noise could have been due to a manifold problem, by the catalytic converter or by the central silencer).
2 to avoid that the wear or the absence of one or more accessories will damage, in a short time, the new part.

During the replacement:
1 if necessary, use new hangers, accessories, gaskets and clamps.
2 put the silencer perfectly in line, to avoid vibrations or abnormal pressures.
3 do not use metal hammers or other hard tools which could damage the silencer.
4 as sealant, if necessary, use the special paste for exhaust systems (which must not substitute the gaskets).
5 carefully verify the new sound emissions to solve immediately eventual problems.

Guarantee:
Are not covered by guarantee all the damages caused by external factors as:
1 silencer braking caused by anomalous vibration or impacts due to accidents or uneven road surfaces.
2 silencer obstruction caused by loss of dross or of phono-absorbent material from the front parts.
3 wrong install with deformation of the connecting pipes or of the hangers.

Quality comparison analysis with the competitors

			COMPETITOR
Par	Description	01.93350	1110
1	01A Box Lenght mm	440	300
2	01B Flange mm
3	01C Hanger mm	n°2 Ø12	n°2 Ø12
4	01D Weight Kg.	7,1	4,0
5	02A E.P. Thickness mm	TAØ45x1,5	TAØ45x1,5
6	02B Exit P. Thickness mm	TAØ45x1,5	TAØ45x1,5
7	03A E.P. Bend	with ferrule	without ferrule
8	03B Exit P. Bend	with ferrule	without ferrule
9	04A E.P. Welding	covered	not covered
10	04B Exit P. Welding	covered	not covered
11	05A End Cap mm	2,0 LA	1,5 LA
12	06A External Welding	automatic	manual
13	07A Body Thickness mm	0,6+0,6	1,0
14	07B Body Material	LA+LA	LA
15	08A Clips Zip	round	round
16	09A Internal Parts Thickness mm	n°3 1,5 LA
17	10A Internal Parts Dimensions mm	n°1 TAFPØ45x1,5 n°1 TAFPØ40x1,5 n°1TAFØ45x1,5 n°1 TAØ45x1,5	n°1 TAFØ45x1,5
18	10B Internal Union	clipped
19	11-12 Internal Material	mechanic	fiber glass