Yeah, because people are looking over and saying, "Who's the *** who can't tune his ***** properly."

The crackling sounds almost like a backfire. My guess is that there is simply not enough backpressure, so you'll be burning out your valves prematurely.

 

that might be the case, I am running 2.5inch piping all the way out. I don't see how I am running without enough backpressure to keep from harming the valves, people on here are running straight pipes, much more free-flowing than this. I know there isn't enough backpressure but if it's really going to cause wear on the engine I'm putting my magnaflow back on.

 

It could be just a coincidence, so don't go ripping the exhaust off or anything drastic.

I just know from my experience with tuning sportbikes (carburated) and older cars that when you get a backfire or crackle (which is essentially the beginning of a backfire) then you've got some work to do before it is setup properly.

 

Well I'll take your advice and listen to anyone elses input, I am debating whether or not to put the maggie back on so that might just do me in if it's the case.

 

Hum my borla doesn't crackle, maybe its just the vid sound..but it sounds like fire crackers going off under the truck

 

. . Well, my Flowmaster has NEVER backfired or cackled.

 

Have you ever reved it? Cause i reved mine to 3k rpm when i left off the gas it cackled..

 

My Roush (offroad) make's a popping sound while reving it up, but only when it's cold.

 

I've reved mine past 3K and no cackle. .

Are you guys doing this when the motor is cold or up to operating temperature?

 

When i got mine to cackle i had just driven home from school and my mom had just driven from my house to school.. so the engine was warm..

 

Heres a few possible reasons. Im running 93 octane, I think I have a different D/O diameter piping and of course weather but mine has never back-fired or cackled.

 

True, I'm running 87 octane.. that's prolly the difference.. What size pipe are you rnning in and out?

 

SI = 3" / DO = 2"

If someone can tell me where I can host a video, I'll show you.

 

That putfile.com or whatever it is! ohh I got SI=3"/DO=2.25"

 

I would be sending my XCAL2 back to Troyer to get it fixed. Those things ain't cheap. Just curious why you would go for sound over performance. I got a singe 3" Magnaflow catback and it sounds awesome and powerful when I get on it. Just seems like you are going for the most performance you can get until before the flowmaster.