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3.5
Product ID: 3.5InchMafAirPipe

Details 

This is a GN1Performance "3.5" MAF AIR FLOW PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is a 3.5" MAF pipe for your Buick Grand National, perfect for those who are running a 3.5" Mass Air Flow sensor. It comes complete with hoses and clamps. 

*Air filter is not included

*With this item you will have to adapt your air filter to the front side of your 3.5" MAF Sensor

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Price: $105.00

3 Inch K&N Air Filter
Product ID: 3InchAirFilter

Details 

This is a  "K&N 3" AIR FILTER" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6
Price: $65.00

3 Inch Cold Air Intake Kit with Filter
Product ID: 3InchColdAirKit

Details 

This is a GN1Performance "3" COLD AIR INTAKE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom fabricated 3 inch aluminum pipe, K&N air filter, and our custom mass air flow pipe. Also included are the hoses and clamps (please specify which mas airflow sensor you are running).
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Price: $289.00

3 Inch Maf Air Flow Pipe
Product ID: 3InchMafAirPipe

Details 

This is a GN1Performance "MAF AIR FLOW PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item features a beautiful high polished finish. It comes complete with hoses and clamps.

*Air filter is not included, but is available

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Price: $85.00

4 Inch K&N Air Filter
Product ID: 4InchAirFilter

Details 

This is a  "K&N 4" AIR FILTER" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6
Price: $65.00

4 Inch Cold Air Intake System
Product ID: 4InchColdAirIntake

Details 

This is a GN1Performance "HUGE 4" COLD AIR INTAKE SYSTEM WITH MAF SENSOR" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom fabricated huge 4 inch aluminum pipe, 4" K&N air filter, and the ALL the hoses and clamps to work with your MAF sensor. As shown in the pictures you must modify your thottle body intake pipe and cut it in the center and mount your MAF sensor there. Please specify what size MAF you are running when purchasing so we can supply you witht he correct hoses.
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Price: $269.00

4 Inch Cold Air Intake System Without MAF
Product ID: 4InchColdAirIntakeNoMaf

Details 

This is a GN1Performance "HUGE 4" COLD AIR INTAKE SYSTEM" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom fabricated huge 4 inch aluminum pipe, 4" K&N air filter, and the hose and clamps. This is item is for buick owners who are running a stand alone fuel management system (fast, BIG stuff, etc)
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Price: $225.00

4 Inch Cold Air Intake System with 4 Inch MAF pipe
Product ID: 4InchColdAirIntakewithMAFPIPE

Details 

This is a GN1Performance "4" COLD AIR INTAKE SYSTEM DESIGNED TO ACCEPT A 3.5 MAF SENSOR" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom fabricated huge 4 inch aluminum pipe, 4" K&N air filter, and the ALL the hoses and clamps to work with your 3.5" LS1 MAF sensor. The kit includes a 4" MAF pipe, a 4" straight hose, (2) 4"-3.5" reducer hoses to adapt your LS1 sensor, a 4" connector pipe, all the stainless heavy duty t-clamps necessary, and a 4" K&N Air Filter. 
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Price: $299.00

4 Inch Maf Air Flow Pipe
Product ID: 4InchMafAirPipe

Details 

This is a GN1Performance " 4"MAF AIR FLOW PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item features a beautiful high polished finish. It comes complete with hoses and clamps.

*Air filter is not included, but is available

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Price: $105.00

MAF Translator With LS1 Sensor
Product ID: MafandLs1Sensor

Details 

This is a "MAF TRANSLATOR BOX AND A LS1 MASS AIR FLOW SENSOR for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This kit helps you get rid of your stock Mass air flow sensor and increase  your air flow while being able to adjust it at the same time. The translator allows the factory computer to work with the new sensor along with giving you some more tuning capabilities such as Air fuel ratios.
Price: $489.00




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