If i'm out on the highway and let off the gas at like 2000-2500 i can hear it popping as I slow down. Any suggs?

 

that would be unburnt fuel i nthe pipes. could be leaking valve, or related problem, dead plug, wire, etc. not burning all the fuel. check the temp of each cylinder with a temp stick (from welding supply) or a crayon. just mark each header tube and see if they all ment at same time. if not that's your dead cylinder, or weak one. other than that check your tune up and make sure it's all good,.

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ICON Motorsports

1st & 3rd
MM Black Diamond 538 F&AM

 

i just posted the same problem man ,,,,,,,,,,, i think its my timing

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1983 CHEVROLET CAMARO with a 1986
305 C.I.D.V8 BORED .030 OVER
HIGH VOLUME OIL PUMP
FLAT-TOP PISTONS
MILD CAM
3" CAT BACK EXHAUST W/ FLOWMASTER MUFFFLER
KEYSTONE CLASSIC WHEELS.
B&M RATCHET SHIFTER
STAGE THREE SHIFT KIT
(she'll spin em into third)

"Wise man once say, friends dont let friends drive Fords!!"

 

This all started after my new intake install. Think My FP is set to high? Timing? Exhaust leak? BTW I have no airtube going tothe cat and the 90* elbow coming out of the cat isnt pluged. Its open letting gas out.

 

I would definately plug up that air tube coming out of the CAT.I honestly think that might be your problem.Ive never seen anyone with it not plugged up.
Al in NJ

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