What You Need to Run ITBs

For those who are new to custom fuel injection systems, the following tables should provide a basic "shopping list" so that you understand what's involved.  Every installation is different, so this is a guideline that's not set in stone.  If you are building a high-end show car, there are probably a few more things you'll want (braided stainless fuel injection hoses, chrome surge tank, etc.).  If you don't mind acquiring salvage yard parts and making liberal use of eBay, then you can probably do a lot better than the prices below.

 
Typical V8 Engine MG MGB Side Draft Datsun Z Inline 6 Typical 4 Cylinder ITB
 
Typical V8 Engine
  Item Description Included in Extrudabody Kit? Quantity Price: Basic Install Price: High-End Install
Throttle Body & Intake System Throttle Body Kit (8 ITBs) 45-50mm Extrudabody Individual Throttle Bodies Yes 1  $      1,495  $        1,495
IDA Base Plates (4) Adpter to mount Extrudabody Throttle Bodies to standard Weber-style manifold Yes 4  $           -    $             -  
Throttle Cam & Cable Holder Links ITBs to stock throttle cable Yes 1  $           -    $             -  
Air Filters Foam UNI-Filters Yes 8  $           -    $             -  
Carb-style Intake Manifold Manifold for specific engine's application No 1  $         300  $           500
Engine Control Fuel Injection Computer (ECU) and Wiring Harness Fuel-only or Fuel & Spark ECU such as MegaSquirt, SDS, Haltech, AEM, Accel, etc. No 1  $         400  $        1,000
O2 Sensor and Bung Narrow-band O2 sensor from any local auto parts store.  Must be welding into exhaust system No 1  $          50  $            50
TPS & Plug Throttle Position Switch & Pigtail for Extrudabody ITB Yes 1  $           -    $             -  
Vacuum Hose Various hoses and adapters to connect Manifold Pressure Signal to ECU and Fuel Pressure Regulator No 1  $            8  $            12
Coolant Temp Sensor Add a GM-style temperature sender or use existing sender (if engine is already EFI)  No 1  $           -    $            15
Fuel Delivery EFI Fuel Pump High pressure, in-line fuel pump, such as MSD #2225 from Summit Racing, or racing style pumps with -6AN fittings No 1  $         100  $           250
Pre-Filter Carb-style low-pressure filter goes between fuel tank and high pressure pump (or surge tank) No 1  $            5  $              7
EFI Fuel filter High pressure fuel filter.  Can use an Inline barb-style filter common to VW/Audi applications or racing-style filter with -6AN fittings No 1  $          21  $           100
Fuel Return Line (steel) 5/16" steel line No 10  $            5  $            10
EFI Fuel Line High pressure rubber fuel line, 3/8" No 5  $            4  $            10
Fuel Rail with Fittings and Hold-Down Extrudabody 12" Fuel Rail with -6AN fittings Yes 2  $           -    $             -  
Fuel Injectors Injector size depends upon engine horsepower No 4  $          30  $            30
Fuel Clamps & Fittings Various clamps and fittings depending on choice of Fuel Pressure Regulator, Filter, and Steel Fuel Line No 8  $            1  $              1
Fuel Pressure Regulator (FPR) Stock-style regulator (like Borg Warner 21710) with barb fittings, or racing-style adjustable with -6AN fittings No 1  $          80  $           200
  Total        $     2,653  $       3,903
Optional Parts Extensions (to lengthen air horn) 1" Extrudabody Extensions No 2  $          10  $            10
Fuel Surge Tank Surge tank to avoid No 1  $         100  $           150
Vacuum Accumulator / Air Log Extrudabody 6" Air Log with Fittings No 1  $          50  $            50
Air Intake Temp Sensor Optional with most ECUs No 1  $          15  $            20
Custom Base Plate (instead of carb-style Intake Manifold) Needed if you can't buy a carb-style manifold for your engine.  Varies widely based on application No 1  n/a   n/a 
New Throttle Cable Extrudabody stainless-look teflon throttle cable with adjuster No 1  $          30  $            30
  Total with all options        $     2,868  $       4,173
MG MGB Side Draft (2 Injector / Twin Port)
  Item Description Included in Extrudabody Kit? Quantity Price: Basic Install Price: High-End Install
Throttle Body & Intake System Throttle Body Kit (2 ITBs) 40mm Extrudabody Individual Throttle Bodies Yes 1  $         475  $           475
SU Base Plate Adpter to mount Extrudabody Throttle Bodies to standard SU-carb Manifold Yes 2  $           -    $             -  
Throttle Cam & Cable Holder Links ITBs to stock MG throttle cable Yes 1  $           -    $             -  
Air Filters Foam UNI-Filters Yes 2  $           -    $             -  
Stock MGB SU Manifold Stock engine's manifold or eBay No 1  $           -    $             -  
Engine Control Fuel Injection Computer (ECU) and Wiring Harness Fuel-only or Fuel & Spark ECU such as MegaSquirt, Haltech, AEM, Accel, etc.  (SDS not allowed for the MG's siamesed head) No 1  $         400  $        1,000
O2 Sensor and Bung Narrow-band O2 sensor from any local auto parts store.  Must be welding into exhaust system No 1  $          50  $            50
TPS & Plug Throttle Position Switch & Pigtail for Extrudabody ITB Yes 1  $           -    $             -  
Vacuum Hose Various hoses and adapters to connect Manifold Pressure Signal to ECU and Fuel Pressure Regulator No 1  $            5  $            10
Coolant Temp Sensor (CTS) GM-style temperature sender can be installed to MG head with brass fitting available at hose supply stores, or tap existing MG head No 1  $          15  $            15
Fuel Delivery EFI Fuel Pump High pressure, in-line fuel pump, such as MSD #2225 from Summit Racing, or racing style pumps with -6AN fittings No 1  $         100  $           250
Pre-Filter Carb-style low-pressure filter goes between fuel tank and high pressure pump (or surge tank) No 1  $            5  $              7
EFI Fuel filter High pressure fuel filter.  Can use an Inline barb-style filter common to VW/Audi applications or racing-style filter with -6AN fittings No 1  $          21  $           100
Fuel Return Line (steel) 5/16" Fine for any performance MGB engine No 10  $            5  $            10
EFI Fuel Line High pressure rubber fuel line, 5/16" No 5  $            4  $            10
Fuel Rail with Fittings and Hold-Down Extrudabody 12" Fuel Rail with -6AN fittings Yes 2  $           -    $             -  
Fuel Injectors 30lb/hr Injectors at 43psi No 2  $          30  $            30
Fuel Clamps & Fittings Various clamps and fittings depending on choice of Fuel Pressure Regulator, Filter, and Steel Fuel Line No 8  $            1  $              1
Fuel Pressure Regulator (FPR) Stock-style regulator (like Borg Warner 21710) with barb fittings, or racing-style adjustable with -6AN fittings No 1  $          80  $           200
  Total        $     1,285  $       2,321
Optional Parts Extensions (to lengthen air horn) 1" Extrudabody Extensions No 2  $          10  $            10
Fuel Surge Tank Surge tank to avoid No 1  $         100  $           150
Vacuum Accumulator / Air Log Extrudabody 6" Air Log with Fittings No 1  $          50  $            50
Air Intake Temp Sensor Optional with most ECUs No 1  $          15  $            20
Custom Base Plate (instead of carb-style Intake Manifold) Needed if you can't buy a carb-style manifold for your engine.  Varies widely based on application No 1  n/a   n/a 
New Throttle Cable Extrudabody stainless-look teflon throttle cable with adjuster No 1  $          30  $            30
  Total with all options        $     1,500  $       2,591
Datsun Z Inline 6 (280ZX, 260Z)
  Item Description Included in Extrudabody Kit? Quantity Price: Basic Install Price: High-End Install
Throttle Body & Intake System Throttle Body Kit (6 ITBs) 45mm Extrudabody Individual Throttle Bodies Yes 1  $         995  $           995
3 DCOE Base Plates Adpter to mount Extrudabody Throttle Bodies to standard Weber-style carb Manifold Yes 2  $           -    $             -  
Throttle Cam & Cable Holder Links ITBs to stock throttle cable Yes 1  $           -    $             -  
Air Filters Foam UNI-Filters Yes 2  $           -    $             -  
Triple Weber Manifold eBay or Pierce Manifolds No 1  $         200  $           500
Engine Control Fuel Injection Computer (ECU) and Wiring Harness Fuel-only or Fuel & Spark ECU such as MegaSquirt, SDS, Haltech, AEM, Accel, etc.  No 1  $         400  $        1,000
O2 sensor and bung Narrow-band O2 sensor from any local auto parts store.  Must be welded into exhaust system No 1  $          50  $            50
TPS & Plug Throttle Position Switch & Pigtail for Extrudabody ITB Yes 1  $           -    $             -  
Vacuum hose Various hoses and adapters to connect Manifold Pressure Signal to ECU and Fuel Pressure Regulator No 1  $          10  $            15
Coolant Temp Sensor (CTS) Add a GM-style temperature sender or use existing sender (if engine is already EFI)  No 1  $           -    $            15
Fuel Delivery EFI Fuel Pump High pressure, in-line fuel pump, such as MSD #2225 from Summit Racing, or racing style pumps with -6AN fittings No 1  $         100  $           250
Pre-Filter Carb-style low-pressure filter goes between fuel tank and high pressure pump (or surge tank) No 1  $            5  $              7
EFI Fuel filter High pressure fuel filter.  Can use an Inline barb-style filter common to VW/Audi applications or racing-style filter with -6AN fittings No 1  $          21  $           100
Fuel Return Line (steel) 5/16" steel line No 10  $            5  $            10
EFI Fuel Line High pressure rubber fuel line, 5/16" or 3/8" (to match existing steel fuel line) No 5  $            4  $            10
Fuel Rail with Fittings and Hold-Down Extrudabody 12" Fuel Rail with -6AN fittings Yes 2  $           -    $             -  
Fuel Injectors 30lb/hr Injectors at 43psi No 6  $          30  $            30
Fuel Clamps & Fittings Various clamps and fittings depending on choice of Fuel Pressure Regulator, Filter, and Steel Fuel Line No 8  $            1  $              1
Fuel Pressure Regulator (FPR) Stock-style regulator (like Borg Warner 21710) with barb fittings, or racing-style adjustable with -6AN fittings No 1  $          80  $           200
  Total        $     2,115  $       3,466
Optional Parts Extensions (to lengthen air horn) 1" Extrudabody Extensions No 6  $          10  $            10
Fuel Surge Tank Surge tank to avoid No 1  $         100  $           150
Vacuum Accumulator / Air Log Extrudabody 6" Air Log with Fittings No 1  $          50  $            50
Air Intake Temp Sensor Optional with most ECUs No 1  $          15  $            20
Custom Base Plate (instead of carb-style Intake Manifold) Needed if you can't buy a carb-style manifold for your engine.  Varies widely based on application No 1  n/a   n/a 
New Throttle Cable Extrudabody stainless-look teflon throttle cable with adjuster No 1  $          35  $            35
  Total with all options        $     2,375  $       3,781
Typical 4 Cylinder Setup (1 ITB per Cylinder)
  Item Description Included in Extrudabody Kit? Quantity Price: Basic Install Price: High-End Install
Throttle Body & Intake System Throttle Body Kit (4 ITBs) 40-50mm Extrudabody Individual Throttle Bodies Yes 1  $         795  $           795
DCOE Base Plates (2) Adpter to mount Extrudabody Throttle Bodies to standard Weber-style manifold Yes 2  $           -    $             -  
Throttle Cam & Cable Holder Links ITBs to stock throttle cable Yes 1  $           -    $             -  
Air Filters Foam UNI-Filters Yes 2  $           -    $             -  
Carb-style Intake Manifold Manifold for specific engine's application No 1  $           -    $           300
Engine Control Fuel Injection Computer (ECU) and Wiring Harness Fuel-only or Fuel & Spark ECU such as MegaSquirt, SDS, Haltech, AEM, Accel, etc. No 1  $         400  $        1,000
O2 Sensor and Bung Narrow-band O2 sensor from any local auto parts store.  Must be welding into exhaust system No 1  $          50  $            50
TPS & Plug Throttle Position Switch & Pigtail for Extrudabody ITB Yes 1  $           -    $             -  
Vacuum Hose Various hoses and adapters to connect Manifold Pressure Signal to ECU and Fuel Pressure Regulator No 1  $            8  $            12
Coolant Temp Sensor Add a GM-style temperature sender or use existing sender (if engine is already EFI)  No 1  $           -    $            15
Fuel Delivery EFI Fuel Pump High pressure, in-line fuel pump, such as MSD #2225 from Summit Racing, or racing style pumps with -6AN fittings No 1  $         100  $           250
Pre-Filter Carb-style low-pressure filter goes between fuel tank and high pressure pump (or surge tank) No 1  $            5  $              7
EFI Fuel filter High pressure fuel filter.  Can use an Inline barb-style filter common to VW/Audi applications or racing-style filter with -6AN fittings No 1  $          21  $           100
Fuel Return Line (steel) 5/16" steel line No 10  $            5  $            10
EFI Fuel Line High pressure rubber fuel line, 5/16" No 5  $            4  $            10
Fuel Rail with Fittings and Hold-Down Extrudabody 12" Fuel Rail with -6AN fittings Yes 2  $           -    $             -  
Fuel Injectors Injector size depends upon engine horsepower No 4  $          30  $            30
Fuel Clamps & Fittings Various clamps and fittings depending on choice of Fuel Pressure Regulator, Filter, and Steel Fuel Line No 8  $            1  $              1
Fuel Pressure Regulator (FPR) Stock-style regulator (like Borg Warner 21710) with barb fittings, or racing-style adjustable with -6AN fittings No 1  $          80  $           200
  Total        $     1,653  $       3,003
Optional Parts Extensions (to lengthen air horn) 1" Extrudabody Extensions No 2  $          10  $            10
Fuel Surge Tank Surge tank to avoid No 1  $         100  $           150
Vacuum Accumulator / Air Log Extrudabody 6" Air Log with Fittings No 1  $          50  $            50
Air Intake Temp Sensor Optional with most ECUs No 1  $          15  $            20
Custom Base Plate (instead of carb-style Intake Manifold) Needed if you can't buy a carb-style manifold for your engine.  Varies widely based on application No 1  n/a   n/a 
New Throttle Cable Extrudabody stainless-look teflon throttle cable with adjuster No 1  $          30  $            30
  Total with all options        $     1,868  $       3,273