Street Legal Performance SLP Exhaust?

Emt1581

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While I haven't seen much on this forum about the brand Street Legal Performance...it's the brand that is on my dad's 5th gen GT.

I see they make axle backs for the S550 for $470-ish. Just curious if they are any good? Any experience with them?

Thanks

-Emt1581





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slink

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I have the SLP LM2 on my car. Very pleased with the quality of the product. I believe they are owned by Roush now.
 

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They're owned by Roush and the SLP LM2 is the Roush AB with packing around the perforated core instead of no packing.
 
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Emt1581

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They're owned by Roush and the SLP LM2 is the Roush AB with packing around the perforated core instead of no packing.
Which does what?...Dampen the noise?

Thanks

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BmacIL

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Which does what?...Dampen the noise?

Thanks

-Emt1581
Yes it makes it less raspy and quieter. It's a pretty nice axleback overall. It'll be a lot like the stock exhaust but crisper, deeper and louder (though not loud). Some reports of drone if you do a resonator delete though.
 
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Emt1581

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Yes it makes it less raspy and quieter. It's a pretty nice axleback overall. It'll be a lot like the stock exhaust but crisper, deeper and louder (though not loud). Some reports of drone if you do a resonator delete though.
See I wouldn't want raspy. I want a deep grow. I see there is a sticky thread in here with different exhaust sounds but now that the weather is warming up...might look at the local cars n coffee and see other owners are willing to let me hear a few revs.

-Emt1581
 

BmacIL

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See I wouldn't want raspy. I want a deep grow. I see there is a sticky thread in here with different exhaust sounds but now that the weather is warming up...might look at the local cars n coffee and see other owners are willing to let me hear a few revs.

-Emt1581
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With the resonator the Roush isn't raspy either, but definitely loud.
 

DrDane

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I had SLP LM1 on my s550 before i swapped to a full system, great note and saves ~20 lbs, sitting in my garage if you are interested.
 
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Emt1581

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I had SLP LM1 on my s550 before i swapped to a full system, great note and saves ~20 lbs, sitting in my garage if you are interested.
What's the difference tween the Loud Mouth 1 and 2?

I went for a ride in my dad's 4.6L 09 GT about an hour ago....sounded REALLY badass with a nice growl to it! But would there be a big difference between the SLP on that and on the 5.0?

Thanks

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csmaan12

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While I haven't seen much on this forum about the brand Street Legal Performance...it's the brand that is on my dad's 5th gen GT.

I see they make axle backs for the S550 for $470-ish. Just curious if they are any good? Any experience with them?

Thanks

-Emt1581
Hell yes! I'm really happy with mine. I have SLP LM2 with a Hearthrob H-Pipe, and it makes the car sounds so sexy, yet doesn't produce much more cabin noise. I got this over the Roush Axle Back because it's quieter when you change over to an X/H - Pipe.

Before H-Pipe, barely noticeable difference in sound over stock on the inside, and a nice deep rumble, a little louder than stock on the outside, and definitely louder than stock when you floor it.

After H-Pipe, little more interior sound (in a good way, not droney), and much better exterior sound, but not obnoxious at all. Gives the car a lot of character. I was planning on taking a video today, I can upload it here later if you'd like to hear.
 
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Emt1581

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What's the difference tween the Loud Mouth 1 and 2?

I went for a ride in my dad's 4.6L 09 GT about an hour ago....sounded REALLY badass with a nice growl to it! But would there be a big difference between the SLP on that and on the 5.0?

Thanks

-Emt1581
Anyone?

Thanks

-Emt1581
 
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Emt1581

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It'll definitely sound different. They just don't sound the same as a 3v 4.6. It'll still sound good, just not the same as a 3v.
Do you mean that the less powerful 4.6 will sound better (deeper/throatier) or just different?

If so, I need to find someone with the LM installed locally on their S550 GT.

What about differences between the LM1 and LM2....any ideas?

Thanks

-Emt1581
 

Synyster06Gates

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Just different - better is subjective. I loved the sound of my 3v GT. Then again, cams and longtube headers helped that. Originally it had an offroad midpipe and SLP LM1s. From what I understand the LM1 is just a hollow resonated muffler similar to the Roush - the LM2 has packing around the perforated core
 

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