Those using slp or pypes muffer delete systems come in here

I am debating purchasing a muffler delete system for the cobra, was wondering how everyone likes them. How is the drone at lower rpm (1500-1800)? I am going to probably go with the slp's over the pypes due to hearing complaints of the pypes fitment on gt500s. The only reason I ask is cause I was bored at work and took my mufflers off today and took it for a test drive, it sounded real good, not to loud just driving and just right at wot. Let me know some of your guys opinions on these if you have any.

i just have it done at a local exhaust shop

David,

I don't have SLP's but I did do the muffler delete mod 2 years ago. I had a set of pipes custom bent and some chrome tips welded on. They don't look as slick as the SLP's but it was less than 1/2 the price.

As far as drone, it depends on the gears you have but some where up in the 70 mph with stock gears when you give it mild maintenance throttle there is a small amount of resonance.

You also may have noticed that when you lay off the throttle under decelerating loads it will crackle a bit. I like it, some people don't

Personally I love the sound of these cars with just the cat's. The only reason I would put mufflers back on would be if I bought long tubes.

Also, the regular 3v's sound nothing like our 5.4L 4v's when using SLP's. They don't sound nearly as good.

sprint200 wrote:David,

I don't have SLP's but I did do the muffler delete mod 2 years ago. I had a set of pipes custom bent and some chrome tips welded on. They don't look as slick as the SLP's but it was less than 1/2 the price.

As far as drone, it depends on the gears you have but some where up in the 70 mph with stock gears when you give it mild maintenance throttle there is a small amount of resonance.

You also may have noticed that when you lay off the throttle under decelerating loads it will crackle a bit. I like it, some people don't

Personally I love the sound of these cars with just the cat's. The only reason I would put mufflers back on would be if I bought long tubes.

Also, the regular 3v's sound nothing like our 5.4L 4v's when using SLP's. They don't sound nearly as good.

Thanks for the reply Jeff, yea I know I could get it done cheaper at a exhaust shop, but like you said, it wouldn't look near as nice. Those slp ones chuck got a svt performance look damn nice. I did notice the crackle/pop on decel, kind of different but damn near every muffler I heard does the samething on these newer mustangs. I was debating on the kr mufflers, but might just get the slp's and see if I like them, if not I will just sell them. Not worried about drone that much, as long as it's not very bad, most of the time I don't cruise at 70mph anyways, thanks again.

Leonard 95 wrote:

sprint200 wrote:David,

I don't have SLP's but I did do the muffler delete mod 2 years ago. I had a set of pipes custom bent and some chrome tips welded on. They don't look as slick as the SLP's but it was less than 1/2 the price.

As far as drone, it depends on the gears you have but some where up in the 70 mph with stock gears when you give it mild maintenance throttle there is a small amount of resonance.

You also may have noticed that when you lay off the throttle under decelerating loads it will crackle a bit. I like it, some people don't

Personally I love the sound of these cars with just the cat's. The only reason I would put mufflers back on would be if I bought long tubes.

Also, the regular 3v's sound nothing like our 5.4L 4v's when using SLP's. They don't sound nearly as good.

Thanks for the reply Jeff, yea I know I could get it done cheaper at a exhaust shop, but like you said, it wouldn't look near as nice. Those slp ones chuck got a svt performance look damn nice. I did notice the crackle/pop on decel, kind of different but damn near every muffler I heard does the samething on these newer mustangs. I was debating on the kr mufflers, but might just get the slp's and see if I like them, if not I will just sell them. Not worried about drone that much, as long as it's not very bad, most of the time I don't cruise at 70mph anyways, thanks again.

Get the SLP...if you dont like the crackle pop...weld in some small resonators. Wont effect performance but eliminates all drone and popping. Its an amazing fix and works. Just sayin

David...what about making your own muffler delete and installing these. Love the shelby tips



http://www.mossmuscle.com/Shop/ViewProducts.aspx?PlateIndexID=60332

yea, I just don't know about having someone make them, worried they will look like shit. Would rather just pay for some that are already made and fit correct.

I have a set of SLP for the gt set up. i don't know if they will fit on a cobra. you can borrow them to see how you like them. there only 3 months old. If you like them I'll sell them to you. here how they sound with a factory exhaust set up with the SLP axle back.