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6L V8 1979 - 1980 Pontiac Grand Am 305/5L V8 1969 - 1986 Chevrolet K10 Suburban 350/5
4L V8 1968 GMC C25/C2500 Pickup 327/5
7 V6 1965 Chevrolet Impala 230/3
0L V8 1981 - 1985 Pontiac Parisienne 231/3
Signature Series muffler offers a moderate performance tone and increased performance over the stock system
Unlock AND TuneinTune 3 for 2020-2023 6.6 L8T Unlock and Tune Kit 8266-R transmission-pans 6L V8 1979 - 1980The 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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