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0L V8 1981 - 1985 Pontiac Parisienne 231/3
3 V8 2017 - 2018 GMC Sierra 2500 HD Base 364/6 V8 2017 - 2018 GMC Sierra 2500 HD SLT 364/6 V8 2017 - 2018 GMC Sierra 2500 HD SLE 364/6 V8 2017 - 2018 GMC Sierra 2500 HD Denali 364/6 V8 2017 - 2019 GMC Sierra 3500 HD 364/6 V8 2018 GMC Sierra 1500 SLT 376/6
7 V6 1965 Chevrolet Impala 230/3
34/8 V 1972 - 1976 Dodge Monaco 4
4L V8 1968 GMC C25/C2500 Pickup 327/5
Unlock AND TuneinTune 3 for 2020-2023 6.6 L8T Unlock and Tune Kit 8266-R transmission-pans 0L V8 1981 - 1985The 2020 2023 6. 6 L8T GM gas trucks have been locked down since their introduction. Owners of these trucks have been waiting patiently for a tuning solution, and DiabloSport has delivered in a big way! The new 8266 R kit includes our inTune 3 handheld tuner, along with our industry exclusive locksmith device and harnesses required to unlock the ECM in your truck. Once unlocked, the inTune 3 offers up tunes for 87, 91 and 93 octane fuels, as well as 2
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