Popping in intake??

Smokedawg · 05-04-2001, 11:53 AM

I posted awhile back about when I drive the stang very long distances and turn it off and go back to start it up it seems like its really flooded. And when it starts I give is some gas to keep it running and theres a popping(backfiring) noise that seems to be goin through the intake?? I heard someone answer this question before but cant remember what it is. Thanks

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347 Stroker Motor: Balanced, A9P Computer, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley Fuel Regulator, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 79mm Mass Air Unit, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Short Throw Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors

Rick 91GT · 05-04-2001, 02:41 PM

The popping is most likely from the Mass AIr meter. Mine did it with the 75mm Pro-M at cold start up but then it would go away. I am fighting it with my 76mm C&L right now as well but I am still trying to tune it, I have only had the motor started for 2 days.

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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

Smokedawg · 05-04-2001, 02:56 PM

So is my mass air goin bad or is it because its not calibrated for my injectors??

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347 Stroker Motor: Balanced, A9P Computer, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley Fuel Regulator, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 79mm Mass Air Unit, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Short Throw Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors

Rick 91GT · 05-04-2001, 03:45 PM

It could very well be the meter not being claibrated, it will run or should run a lot better. Although the fuel curve on the 19#, 30# and 36# injectors are the same, the pulse widths are different, so you really need to get a calibrated meter.

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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

[This message has been edited by Rick 91GT (edited 05-04-2001).]

05-04-2001, 11:53 AM	#1
Smokedawg Tires Fear Me... Join Date: Jan 2001 Posts: 867	Popping in intake?? I posted awhile back about when I drive the stang very long distances and turn it off and go back to start it up it seems like its really flooded. And when it starts I give is some gas to keep it running and theres a popping(backfiring) noise that seems to be goin through the intake?? I heard someone answer this question before but cant remember what it is. Thanks ------------------ 347 Stroker Motor: Balanced, A9P Computer, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley Fuel Regulator, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 79mm Mass Air Unit, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Short Throw Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors

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05-04-2001, 02:41 PM	#2
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	The popping is most likely from the Mass AIr meter. Mine did it with the 75mm Pro-M at cold start up but then it would go away. I am fighting it with my 76mm C&L right now as well but I am still trying to tune it, I have only had the motor started for 2 days. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

05-04-2001, 02:56 PM	#3
Smokedawg Tires Fear Me... Join Date: Jan 2001 Posts: 867	So is my mass air goin bad or is it because its not calibrated for my injectors?? ------------------ 347 Stroker Motor: Balanced, A9P Computer, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley Fuel Regulator, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 79mm Mass Air Unit, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Short Throw Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors

05-04-2001, 03:45 PM	#4
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	It could very well be the meter not being claibrated, it will run or should run a lot better. Although the fuel curve on the 19#, 30# and 36# injectors are the same, the pulse widths are different, so you really need to get a calibrated meter. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon! [This message has been edited by Rick 91GT (edited 05-04-2001).]