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Old 04-12-2006, 10:37 AM   #1
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Dull Pop Sound Comeing from area of Passenger Side Header

I just completed the entire install of my 9 PSI Powerdyne BD11. For starters the car has been off the road for 5 months with the battery disconected. I started the car up and it idled a little rough for a few min then things started to get smooth out when everything started to warm up. I did a few quick 1/4 thorttle revs to about 2500-3000 RPM in neautral and after the Rpm starts to come down I hear this dull but noticeable POP come from the area of the passenger side header. The car maintains idle after being reved and it dosn't stall out. My fuel pressure is currently set to about 36 PSI accoring to my Autometer Electric F/P gage and Timeing is at roughly 14-15*. Could this pop be from a lean condition or is something wrong internally. The engine is practially brand new, it has about 2000 miles on it since being installed last summer.
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Old 04-12-2006, 11:55 AM   #2
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TTTTTT
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1993 Mustang GT
306 9.0:1 Compression, Cryo treated crank/rods block,cam,valves. GT40 Y303 Heads.Comp Cams 270H-R14 .533"/.544" lift 215*/220* duration 114* LSA. Ported Cobra Upper/Lower Intake, 70mm T-Body, 73mm C&L MAF, 24lb/hr injectors, 155 lph pump, Kenne Bell BAP, Powerdyne BD11 9PSI, Anderson PMS, Innovate LM1 Wideband 02, Jacobs 5.0 Ignition, MSD BTM, FRPP 1 5/8" Dia Shorty Headers, BBK X-Pipe 2.5" w/cats, Flowmaster Catback, Tremec TKO-600, Alum driveshaft 3:55 gears, FRPP/HPM Controll arms, KYB Shocks/Struts.
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Old 04-12-2006, 11:00 PM   #3
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u sure the rockers are adjusted properly? exhaust leak?

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Old 04-13-2006, 12:30 AM   #4
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Could be your heater core under the dash. Mine did the same thing just ONE big loud pop. Look for antifreeze on the floorboard and near the back of the passenger header coming out of the firewall. just my .02
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Old 04-13-2006, 08:00 AM   #5
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Sounds very much like a lean-pop condition. Pretty common with blown set-ups. Have you considered up-sizing your injectors? I would definately recommend doing so!
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