Exhaust "crackling" from 2500-3000RPM

[Greystang302]

My current mods can be found in the signature. I never noticed this crackling sound while I had my tailpipes hooked up, but I removed them the other day for the hell of it. With the tailpipes removed, if I am giving it any gas AT ALL, it makes a nasty crackly/rattling sound through the exhaust. I am putting the tailpipes back on tomorrow, to see if it is still there and I just never noticed it. The car is tuned well, with no detonation present. I am currently at 42 psi of fuel pressure, and 20^BTDC timing on 93 octane. The TW heads like this much timing, I am not insane. Oh, my Accel 300+ ignition is also off the car right now, it is about to get sent back to Mr. Gasket because it quit working again.

BTW, my CVX mufflers are a straight-through design with perforations around the inside of the pipe, and packing inside the muffler... if you aren't familiar with them.

Is this just the typical X-pipe sound? I can't help but wonder if it's normal to have this sound when running dumps? I will let ya know what I find out when I install the tailpipes again tomorrow.

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1989 Mustang GT, Charcoal Gray w/Titanium, 80k miles -- Stage III TW heads, E-cam, ported Cobra intake, Compucar N2O, 65mm TB, Kirban FPR @ 42psi, BBK 1 5/8" Jet-Hot long tubes, Dr. Gas X-pipe, Dynomax CVX cat-back, 3.55 gears, Tremec 3550 w/Hurst Comp. Plus, Steeda quadrant, Zoom HD clutch, 16"x8.5" OZ Monte Carlos w/245/50ZR16 SZ50s, Factory Five upper and lower rear control arms, SVO pulleys, Accel 300+ and Race Wires, K&N conical, '93 Cobra valance, Auto Meter, 130G<A HREF="ht

[This message has been edited by Greystang302 (edited 05-07-2001).]