Any interior drone with SLP res delete?

[Griff38]

for those that have the SLP res delete do you have interior drone on the highway? Especially when the fuel management kicks in? Thanks!

 

[08HoeCD]

No drone on the highway or ever unless you have a different intake tube and/or exhaust.

When I added the SLP to my otherwise stock 2008, the only really noticeable change was a very throaty startup note and slightly noticeably deeper overall tone, mainly at lower speeds.

I added the Airaid M.I.T. and that alone made a surprisingly big difference in growl under heavy throttle with just a barely detectable bit of drone only when accelerating under load. The drone is attributed to the intake tube and not the SLP.

My theory is that the SLP tone is more noticeable on pre-2009 trucks, and I think this is because the 2007 & 2008 models have only two (2) cats whereas 2009+ have three (3) cats. The fewer the cats, the more noticeable the exhaust note.

 

[07Burb]

no drone whatsoever with just the SLP resonator delete kit when installed on my '07. In fact, taking the resonator off made virtually no different in sound at all. Just made it look a million times better over that ugly dingleberry hanging from under neath the rear bumper.

 

[08HoeCD]

I'll see about creating a video of startup on my 2008 with SLP kit. Sounds like an aftermarket exhaust to me.

 

[Griff38]

I'll see about creating a video of startup on my 2008 with SLP kit. Sounds like an aftermarket exhaust to me.

Thanks...that would be great.

 

[Fosscore]

no drone whatsoever with just the SLP resonator delete kit when installed on my '07. In fact, taking the resonator off made virtually no different in sound at all. Just made it look a million times better over that ugly dingleberry hanging from under neath the rear bumper.

No SLP kit, but I did cut off the resonator as mentioned above. No difference in tone or note and looks much cleaner.

 

[07Burb]

No SLP kit, but I did cut off the resonator as mentioned above. No difference in tone or note and looks much cleaner.

View attachment 182104 View attachment 182105

exactly how mine looks now because the SLP kit was too hard for me to keep clean

 

[Fosscore]

exactly how mine looks now because the SLP kit was too hard for me to keep clean

I'm still keeping these though.

 

[08HoeCD]

I had compared notes with @Fosscore back when I was deciding whether to do the pure cut-off solution he shows in this thread or go with the SLP kit. I was surprised at the throaty startup tone on my rig with the SLP kit, and I mentioned to him that my unscientific theory is that the SLP tips act as a small megaphone, at least at start up.

I'll get the video going today or tomorrow and share it.

 

[Fosscore]

Yes I remember we went back and forth. I cut the resonator off first, you got the SLP and thankfully took that Airaid M.I.T. before I did as well. lol