Overkill Motorsports Products
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Overkill Custom Computer Tuning is available for all GM W-Body applications, including 3800 Supercharged V6 in Grand Prix GTPs, Chevrolet Impala/Monte SS, Buick Regal GS and more, the 3500/3900 VVT V6 engines in the 2006+ Impala and Monte Carlo, the 3.6 Direct Injection V6 found in the 2012-13 Impala, and the 5.3 LS4 V8 found in Grand Prix GXP, Buick Super, Impala SS and Monte Carlo SS. Overkill tuning strives to be the best tuning product available for your vehicle and we are very proud to be the #1 choice for so many people. Please find your engine below and click to learn more. |
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The computers that started it all, having owned 4 Supercharged Grand Prixs and tuning since 2003. An Overkill Supercharged 3800 PCM provides increased horsepower, reduced KR and improved engine safety, improved transmission shifting and increased life expectancy, and will greatly improve how your vehicle drives. With way more features than competing computer products, we've always strived to produce the best 3800 tuning on the market. For: 1997-2007 Grand Prix GTP (06-07 GT), 1997-2004 Buick Regal GS, 1997-2003 Pontiac Bonneville SSEi and 2004-2005 Chevrolet Impala SS and Monte Carlo SS. Click Here for More Details Price: $149.99USD |
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No need to be supercharger envious, we've packed our non-supercharged 3800 tuning with as much attention to detail. Available in both 87 and 91+ octane versions, expect improved horsepower, smoother acceleration, more responsiveness, improved transmission shifting and increased life expectancy, and improvement in how your vehicle drives. You may also experience improvements in fuel economy that helps the tune pay for itself. With way more features than competing computer products, we've always strived to produce the best 3800 tuning on the market. For: 1997-2008 Grand Prix, 1997-2004 Buick Regal, 1997-2003 Pontiac Bonneville and 2004-2005 Chevrolet Impala and Monte Carlo. If you have a Buick LeSabre, Park Avenue or other with a Series 2 3800 V6, please email for support details! Similar features apply! Click Here for More Details Price: $149.99USD |
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We are pleased to offer tuning for your 3400 V6 powered vehicle. Based on the same tuning techniques as our 3800 tunes and packed with just as many features, expect increased performance on 87 or 91+ octane, smoother acceleration, more responsiveness, improved transmission shifting and increased life expectancy, and improvement in how your vehicle drives. You may also experience improvements in fuel economy that helps the tune pay for itself. For: 2000-2005 Chevrolet Impala and Monte Carlo. If you have a Grand Am, Alero or GM minivan with the 3.4 V6, or a Grand Prix with a 3.1 V6, please email for support details! Similar features apply! Click Here for More Details Price: $149.99USD |
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We are excited to release our reprogrammed computers for your 5.3 LS4 V8 powered W-Body vehicle. We consider the LS4 vehicles the pinnacle of the W-Body platform we've come to love. An Overkill LS4 Computer Reprogram builds upon the factory setup by offering an increase in horsepower on either 87 or 91+ octane, improved responsiveness, improved fuel economy, greatly improved transmission performance and expected durability, and our famous attention to detail that you won't find in competing products. All the features you want at a price that's hard to beat! For: 2005-2008 Grand Prix GXP, 2006+ Chevrolet Impala and Monte Carlo SS. Click Here for More Details Price: $199.99USD |
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We are pleased to introduce our reprogrammed computers for your 3500 V6 powered vehicle. The LZ 3500/3900 engine family is GM's latest, greatest and potentially last pushrod V6 design, packed with updated technology. We are pleased to build upon such an engine with an extensive computer reprogram, offering increased horsepower on 87 or 91+ octane, smoother acceleration, increased responsiveness, improved transmission shifting and increased life expectancy, a big improvement in the fun-to-drive factor that has the potential to increase fuel economy and pay for itself. With the same features we pack into our original GM V6 PCMs, you'll thoroughly enjoy our 3900 computers. For:2006-2010 Chevrolet Impala, 2006-2007 Monte Carlo, 2007-2008 Pontiac G6, Saturn Aura and 2007 Chevrolet Malibu. Click Here for More Details Price: $149.99USD |
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Highly anticipated (by us as well!), our reprogrammed computers for your 3900 V6 powered GM vehicle are now available. The LZ 3500/3900 engine family is GM's latest, greatest and potentially last pushrod V6 design, packed with updated technology including its flex-fuel and Displacement-On-Demand equipped variants. We are pleased to build upon such an engine with an extensive computer reprogram, offering increased horsepower on 87 or 91+ octane, smoother acceleration, increased responsiveness, improved transmission shifting and increased life expectancy, a big improvement in the fun-to-drive factor that has the potential to increase fuel economy and pay for itself. With the same features we pack into our original GM V6 PCMs, you'll thoroughly enjoy our 3900 computers. For: 2006-2011 Chevrolet Impala, 2006-2007 Monte Carlo, 2006-2008 Pontiac G6, and 2006-2007 Chevrolet Malibu. Click Here for More Details Price: $149.99USD |
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Overkill tuning is now available for the terrific 3.6 Direct Injection V6 found in the 2012 and 2013 Impalas (and other models to come). A retune of the engine management computer should be top priority if you're looking for improved performance, improved driving characteristics, improved fuel mileage potential and many other benefits. With the same features we pack into our original GM V6 PCMs, you'll thoroughly enjoy our 3.6 DI computers. For: 2012-2013 Impalas. Click Here for More Details Price: $199.99USD |