<![CDATA[TurboTweak: ]]> https://www.turbotweakstore.com Wed, 7 Oct 2026 00:00:00 EST en-us <![CDATA[Scanmaster-G Gauge Buick - Black]]> https://www.turbotweakstore.com/Scanmaster-G-Gauge-Buick--Black_p_21.html Wed, 7 Oct 2026 00:00:00 EST For the 86-87 Buicks and 89 TTA stock computer, also the ecu-GN ECU (won't work on the 84-85 cars with stock ECM)New Gauge Version! Excellent small scantool for monitoring Knock retard, O2 readings, sensors, etc.For the stock computer, will show you ...[Read More]
Our Price: $259.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Scanmaster-G-Gauge-Buick--Black_p_21.html For the 86-87 Buicks and 89 TTA stock computer, also the ecu-GN ECU (won't work on the 84-85 cars with stock ECM)New Gauge Version! Excellent small scantool for monitoring Knock retard, O2 readings, sensors, etc.For the stock computer, will show you ...[Read More]
Our Price: $259.99 [Add to Cart]


]]> For the 86-87 Buicks and 89 TTA stock computer, also the ecu-GN ECU (won't work on the 84-85 cars with stock ECM)

New Gauge Version! Excellent small scantool for monitoring Knock retard, O2 readings, sensors, etc.

For the stock computer, will show you (ecu-GN will show different data):
O2 - Oxygen sensor millivolts
KR - Knock Retard
AF - MAF Airflow in grams/sec
LV8 - Load Value
BAT - Voltage to the ECM
INT - Integrator
BLM - Block Learn Multiplier
MPH - Miles Per Hour
CLT - Coolant Temp
ATS - Air Intake Temp
RPM - Current Engine RPM
TPS - Throttle Position in volts
IAC - Idle Air Control motor commanded position
CC - Oxygen Sensor Cross Counts
MAL - Malfunction Codes

Simple hookup, 12v, gound, and one wire connects to ALDL plug under radio (you need to splice into it, or use a small spade to plug in).

Instructions here: https://www.turbotweaksupport.com/files/scanmaste...


Has many new features!
- Dot matrix OLED display, clear and readable, 128 x 64 pixels
- Size is a 2-1/16" gauge
- Captures the leanest reading and highest knock for immediate recall, along with the MPH's where it occurred
- Has a bluetooth module, so you can log from it to a phone/tablet/laptop (with a compatible Windows and Android device)
- Works the standard Buick datastream, Powerlogger, and ecu-GN
- Displays analog data (boost, wideband) when connected to a PowerLogger
- Displays all the Speed/Density info when running an SD2 chip as well as Fuel Composition (E85 alcohol)
- Displays many parameters with the ecu-GN
- ...And more
]]> <![CDATA[Connector 22-pin for ecuGN]]> https://www.turbotweakstore.com/Connector-22-pin-for-ecuGN_p_50.html Wed, 7 Oct 2026 00:00:00 EST This connector is for the 22-pin expansion port on the side of the ecu-GN. It includes the crimp terminals.For crimping, you can use a Metri-Pack crimper. For depinning, a Metripack 150 terminal removal tool will work. ...[Read More]
Our Price: $9.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Connector-22-pin-for-ecuGN_p_50.html This connector is for the 22-pin expansion port on the side of the ecu-GN. It includes the crimp terminals.For crimping, you can use a Metri-Pack crimper. For depinning, a Metripack 150 terminal removal tool will work. ...[Read More]
Our Price: $9.99 [Add to Cart]


]]> This connector is for the 22-pin expansion port on the side of the ecu-GN. It includes the crimp terminals.
For crimping, you can use a Metri-Pack crimper. For depinning, a Metripack 150 terminal removal tool will work. ]]> <![CDATA[Direct Coilpack Adapter]]> https://www.turbotweakstore.com/Direct-Coilpack-Adapter_p_51.html Wed, 7 Oct 2026 00:00:00 EST Newer design with factory style connector. Wiring harness to adapt the new coilpack to the original ignition module connector. For use with the ecu-GN on 86/87 cars. Allows the use of the newer style coilpack, and the removal of the stock ignition mo...[Read More]
Our Price: $249.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Direct-Coilpack-Adapter_p_51.html Newer design with factory style connector. Wiring harness to adapt the new coilpack to the original ignition module connector. For use with the ecu-GN on 86/87 cars. Allows the use of the newer style coilpack, and the removal of the stock ignition mo...[Read More]
Our Price: $249.99 [Add to Cart]


]]> Newer design with factory style connector. Wiring harness to adapt the new coilpack to the original ignition module connector. For use with the ecu-GN on 86/87 cars. Allows the use of the newer style coilpack, and the removal of the stock ignition module for 86/87 years. The stock module will no longer be used, as the ecu-GN will control the newer coilpack directly. The coilpack to use is from a 2012 Chevy Silverado 1500 4.3 V6 (D599A). You can drill holes to mount it to your original module plate, or you can use TurboTweak adapter plate part# 4014. HERE ]]> <![CDATA[Coil Near Plug Adapter Harness - IGN1A / Holley Smart Coils]]> https://www.turbotweakstore.com/Coil-Near-Plug-Adapter-Harness--IGN1A-Holley-Smart-Coils_p_52.html Wed, 7 Oct 2026 00:00:00 EST For use with the ecu-GN only. Allows the use of individual coils, and the removal of the stock ignition module. The stock module will no longer be used, as the ecu-GN will control the coils directly. Includes relay and hotwire to alternator. The coil...[Read More]
Our Price: $325.00 [Add to Cart]


]]> https://www.turbotweakstore.com/Coil-Near-Plug-Adapter-Harness--IGN1A-Holley-Smart-Coils_p_52.html For use with the ecu-GN only. Allows the use of individual coils, and the removal of the stock ignition module. The stock module will no longer be used, as the ecu-GN will control the coils directly. Includes relay and hotwire to alternator. The coil...[Read More]
Our Price: $325.00 [Add to Cart]


]]> For use with the ecu-GN only. Allows the use of individual coils, and the removal of the stock ignition module. The stock module will no longer be used, as the ecu-GN will control the coils directly. Includes relay and hotwire to alternator. The coils to use are AMP/EFI IGN1A, Holley Smart Coil, or Pantera. You will need a way to mount these. Recommend the LS coil setup in most cases (different harness), as these IGN1a coils are very powerful and can sometimes cause electrical interference. ]]> <![CDATA[Coil Near Plug Adapter Harness - LS Coils]]> https://www.turbotweakstore.com/Coil-Near-Plug-Adapter-Harness--LS-Coils_p_53.html Wed, 7 Oct 2026 00:00:00 EST For use with the ecu-GN only. Allows the use of individual coils, and the removal of the stock ignition module. The stock module will no longer be used, as the ecu-GN will control the coils directly. Includes relay and hotwire to alternator. Can be u...[Read More]
Our Price: $325.00 [Add to Cart]


]]> https://www.turbotweakstore.com/Coil-Near-Plug-Adapter-Harness--LS-Coils_p_53.html For use with the ecu-GN only. Allows the use of individual coils, and the removal of the stock ignition module. The stock module will no longer be used, as the ecu-GN will control the coils directly. Includes relay and hotwire to alternator. Can be u...[Read More]
Our Price: $325.00 [Add to Cart]


]]> For use with the ecu-GN only. Allows the use of individual coils, and the removal of the stock ignition module. The stock module will no longer be used, as the ecu-GN will control the coils directly. Includes relay and hotwire to alternator. Can be used with LS coil D510C. There may be adapter plates available soon for mounting. ]]> <![CDATA[Flexfuel Sensor Adapter for ecu-GN - Short]]> https://www.turbotweakstore.com/Flexfuel-Sensor-Adapter-for-ecu-GN--Short_p_54.html Wed, 7 Oct 2026 00:00:00 EST Allows the plug-n-play connection of a flexfuel sensor to the original MAF connector, which sends the signal to the ecuGN.Short version to mount sensor under hood, 4 feet. ...[Read More]
Our Price: $40.00 [Add to Cart]


]]> https://www.turbotweakstore.com/Flexfuel-Sensor-Adapter-for-ecu-GN--Short_p_54.html Allows the plug-n-play connection of a flexfuel sensor to the original MAF connector, which sends the signal to the ecuGN.Short version to mount sensor under hood, 4 feet. ...[Read More]
Our Price: $40.00 [Add to Cart]


]]> Allows the plug-n-play connection of a flexfuel sensor to the original MAF connector, which sends the signal to the ecuGN.
Short version to mount sensor under hood, 4 feet. ]]> <![CDATA[Flexfuel Sensor Adapter for ecuGN - Long]]> https://www.turbotweakstore.com/Flexfuel-Sensor-Adapter-for-ecuGN--Long_p_55.html Wed, 7 Oct 2026 00:00:00 EST Allows the plug-n-play connection of a flexfuel sensor to the original MAF connector, which sends the signal to the ecuGN.Long version to mount sensor at back of car, 15 feet, although you can shorten it to your desired length....[Read More]
Our Price: $45.00 [Add to Cart]


]]> https://www.turbotweakstore.com/Flexfuel-Sensor-Adapter-for-ecuGN--Long_p_55.html Allows the plug-n-play connection of a flexfuel sensor to the original MAF connector, which sends the signal to the ecuGN.Long version to mount sensor at back of car, 15 feet, although you can shorten it to your desired length....[Read More]
Our Price: $45.00 [Add to Cart]


]]> Allows the plug-n-play connection of a flexfuel sensor to the original MAF connector, which sends the signal to the ecuGN.
Long version to mount sensor at back of car, 15 feet, although you can shorten it to your desired length.]]> <![CDATA[ecuGN Oxygen Sensor replacement]]> https://www.turbotweakstore.com/ecuGN-Oxygen-Sensor-replacement_p_57.html Wed, 7 Oct 2026 00:00:00 EST Replacement Bosch wideband oxygen sensor for the ecu-GN aftermarket ECU only, not the stock Buick computer. This sensor may have a shorter lead (about 10 inches) than the original (36 inches), but will work fine with the original ECU cable length. ...[Read More]
Our Price: $69.99 [Add to Cart]


]]> https://www.turbotweakstore.com/ecuGN-Oxygen-Sensor-replacement_p_57.html Replacement Bosch wideband oxygen sensor for the ecu-GN aftermarket ECU only, not the stock Buick computer. This sensor may have a shorter lead (about 10 inches) than the original (36 inches), but will work fine with the original ECU cable length. ...[Read More]
Our Price: $69.99 [Add to Cart]


]]> Replacement Bosch wideband oxygen sensor for the ecu-GN aftermarket ECU only, not the stock Buick computer. This sensor may have a shorter lead (about 10 inches) than the original (36 inches), but will work fine with the original ECU cable length. ]]> <![CDATA[Fuses for ecu-GN, not for new ECU's]]> https://www.turbotweakstore.com/Fuses-for-ecu-GN-not-for-new-ECUs_p_58.html Wed, 7 Oct 2026 00:00:00 EST New ECU's do not have these fuses, they are not required.Only ECU's under serial# 510 have these fuses (made before year 2024). Above #510 do not have fuses.Qty 2 replacement fuses for the ecu-GN (fuses F1 and F2). ...[Read More]
Our Price: $5.00 [Add to Cart]


]]> https://www.turbotweakstore.com/Fuses-for-ecu-GN-not-for-new-ECUs_p_58.html New ECU's do not have these fuses, they are not required.Only ECU's under serial# 510 have these fuses (made before year 2024). Above #510 do not have fuses.Qty 2 replacement fuses for the ecu-GN (fuses F1 and F2). ...[Read More]
Our Price: $5.00 [Add to Cart]


]]> New ECU's do not have these fuses, they are not required.
Only ECU's under serial# 510 have these fuses (made before year 2024). Above #510 do not have fuses.
Qty 2 replacement fuses for the ecu-GN (fuses F1 and F2). ]]> <![CDATA[Wideband Cable Replacement - ecuGN]]> https://www.turbotweakstore.com/Wideband-Cable-Replacement--ecuGN_p_59.html Wed, 7 Oct 2026 00:00:00 EST Replacement wideband cable for the ecu-GNSame length as original, which is about 8-1/2 feet. ...[Read More]
Our Price: $39.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Wideband-Cable-Replacement--ecuGN_p_59.html Replacement wideband cable for the ecu-GNSame length as original, which is about 8-1/2 feet. ...[Read More]
Our Price: $39.99 [Add to Cart]


]]> Replacement wideband cable for the ecu-GN
Same length as original, which is about 8-1/2 feet. ]]> <![CDATA[Airtemp Sensor Extension Harness]]> https://www.turbotweakstore.com/Airtemp-Sensor-Extension-Harness_p_60.html Wed, 7 Oct 2026 00:00:00 EST Extension harness for the IAT (airtemp or MAT) sensor, 36 inches, when moving the sensor to a different location (like the plenum or intake pipe). For use with an aftermarket ECU, such as the ecu-GN. ...[Read More]
Our Price: $25.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Airtemp-Sensor-Extension-Harness_p_60.html Extension harness for the IAT (airtemp or MAT) sensor, 36 inches, when moving the sensor to a different location (like the plenum or intake pipe). For use with an aftermarket ECU, such as the ecu-GN. ...[Read More]
Our Price: $25.99 [Add to Cart]


]]> Extension harness for the IAT (airtemp or MAT) sensor, 36 inches, when moving the sensor to a different location (like the plenum or intake pipe). For use with an aftermarket ECU, such as the ecu-GN. ]]> <![CDATA[ecu-GN Standalone ECU for Turbo Buicks]]> https://www.turbotweakstore.com/ecu-GN-Standalone-ECU-for-Turbo-Buicks_p_85.html Wed, 7 Oct 2026 00:00:00 EST Complete standalone ECU for the 84-87 turbo Buicks, and 89 Pontiac Turbo TA. See www.ecugn.com for more details. When ordering, fill out the info about your car so we can make a startup tune. This will need to be tuned! It will come with a startup tu...[Read More]
Our Price: $2,099.99 [Add to Cart]


]]> https://www.turbotweakstore.com/ecu-GN-Standalone-ECU-for-Turbo-Buicks_p_85.html Complete standalone ECU for the 84-87 turbo Buicks, and 89 Pontiac Turbo TA. See www.ecugn.com for more details. When ordering, fill out the info about your car so we can make a startup tune. This will need to be tuned! It will come with a startup tu...[Read More]
Our Price: $2,099.99 [Add to Cart]


]]> Complete standalone ECU for the 84-87 turbo Buicks, and 89 Pontiac Turbo TA. See www.ecugn.com for more details. When ordering, fill out the info about your car so we can make a startup tune. This will need to be tuned! It will come with a startup tune, but you are responsible for tuning it. Support forum at www.turbotweaksupport.com for questions and help.
Comes with ECU, wideband O2 sensor, wideband cable, O2 bung, USB cable, and USB flash drive with software and startup tune.
  • ECU plugs directly into the factory harness
  • Gives you complete control of tuning
  • Based on the proven MS3Pro core and includes TunerStudio Ultra for tuning and logging (Windows based PC only).
  • TunerStudio Ultra has better datalogging and ability to edit/create your own dashboards
  • Built-in 4 bar MAP sensor (you will need to run a vacuum hose for that), or you can use an external MAP
  • Built-in wireless (WIFI) communication if desired, or USB cable (no adapters required)
  • Billet aluminum case with LED's built in for troubleshooting
  • Compatible with existing Scanmaster 2.2 or Scanmaster G gauge! (for SM 2.1, an upgrade chip can be purchased)
  • Built-in antitheft feature
  • Built-in wideband O2 controller, comes with sensor and cable (bosch 4.9), wideband sensor heats only after startup, unless engine warm, for improved life
  • Operates high or low impedance injectors
  • Uses the stock ignition, or can use newer coilpacks or coil per plug with available plug and play harnesses.
  • On-board automatic datalogging
  • Additional built in CPU with CAN communication and expanded Inputs/Outputs (10 analog inputs total)
  • Flexfuel, Traction Control, Boost Control, Launch Control, Water/Meth Injection, antitheft, and much more!
  • Should be used with the factory wiring harness, or one that duplicates the factory ECU power and grounds
]]> <![CDATA[Transmission Controller - 4L80E for ecu-GN]]> https://www.turbotweakstore.com/Transmission-Controller--4L80E-for-ecu-GN_p_86.html Wed, 7 Oct 2026 00:00:00 EST This is NOT required for the stock 200r4 transmission. This is a controller for the 4L80E transmission and communicates with the ecu-GN ECU. It comes with the transmission sub-harness, which has a connector for the 1994 and later 4L80E.AMP/EFI Transm...[Read More]
Our Price: $499.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Transmission-Controller--4L80E-for-ecu-GN_p_86.html This is NOT required for the stock 200r4 transmission. This is a controller for the 4L80E transmission and communicates with the ecu-GN ECU. It comes with the transmission sub-harness, which has a connector for the 1994 and later 4L80E.AMP/EFI Transm...[Read More]
Our Price: $499.99 [Add to Cart]


]]> This is NOT required for the stock 200r4 transmission. This is a controller for the 4L80E transmission and communicates with the ecu-GN ECU. It comes with the transmission sub-harness, which has a connector for the 1994 and later 4L80E.

  • AMP/EFI Transmission Controller
  • Complete 4L80E wiring harness
  • 6 pin black connector for power, ground, and CAN bus
  • 8 pin gray connector for additional inputs
  • Integrates into your Tunerstudio project for tuning and logging
]]> <![CDATA[LS3 Coil Brackets for stock valve covers - ecu-GN]]> https://www.turbotweakstore.com/LS3-Coil-Brackets-for-stock-valve-covers--ecu-GN_p_87.html Wed, 7 Oct 2026 00:00:00 EST These brackets will mount the LS3 (D510C) coils to stock valve covers. For use with the ecu-GN or other systems that use this coil setup.Laser cut, made from stainless steel. Comes with hardware. Coils not included.For stock valve covers and LS3 coil...[Read More]
Our Price: $149.99 [Add to Cart]


]]> https://www.turbotweakstore.com/LS3-Coil-Brackets-for-stock-valve-covers--ecu-GN_p_87.html These brackets will mount the LS3 (D510C) coils to stock valve covers. For use with the ecu-GN or other systems that use this coil setup.Laser cut, made from stainless steel. Comes with hardware. Coils not included.For stock valve covers and LS3 coil...[Read More]
Our Price: $149.99 [Add to Cart]


]]> These brackets will mount the LS3 (D510C) coils to stock valve covers. For use with the ecu-GN or other systems that use this coil setup.
Laser cut, made from stainless steel. Comes with hardware. Coils not included.
For stock valve covers and LS3 coils only.
]]> <![CDATA[Flexfuel sensor with -6AN fittings]]> https://www.turbotweakstore.com/Flexfuel-sensor-with-6AN-fittings_p_89.html Wed, 7 Oct 2026 00:00:00 EST Flexfuel sensor. Includes two -6AN fittings. Compatible with ecu-GN and other aftermarket ECUs. (not the stock computer) ...[Read More]
Our Price: $94.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Flexfuel-sensor-with-6AN-fittings_p_89.html Flexfuel sensor. Includes two -6AN fittings. Compatible with ecu-GN and other aftermarket ECUs. (not the stock computer) ...[Read More]
Our Price: $94.99 [Add to Cart]


]]> Flexfuel sensor. Includes two -6AN fittings. Compatible with ecu-GN and other aftermarket ECUs. (not the stock computer) ]]> <![CDATA[Adapter plate - ecu-GN D599A Coilpack]]> https://www.turbotweakstore.com/Adapter-plate--ecu-GN-D599A-Coilpack_p_90.html Wed, 7 Oct 2026 00:00:00 EST Adapter plate to mount a D599A truck coilpack to the stock coilpack bracket ('86/87 years). For use with the ecu-GN, when converting from the stock coil/module to the newer style D599A truck coilpack.Comes with screws and studs for mounting. (coilpac...[Read More]
Our Price: $59.99 [Add to Cart]


]]> https://www.turbotweakstore.com/Adapter-plate--ecu-GN-D599A-Coilpack_p_90.html Adapter plate to mount a D599A truck coilpack to the stock coilpack bracket ('86/87 years). For use with the ecu-GN, when converting from the stock coil/module to the newer style D599A truck coilpack.Comes with screws and studs for mounting. (coilpac...[Read More]
Our Price: $59.99 [Add to Cart]


]]> For use with the ecu-GN, when converting from the stock coil/module to the newer style D599A truck coilpack.
Comes with screws and studs for mounting. (coilpack not included)
]]>