Tapout Tuning

LF4 Performance Tuning Specialists

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Black Friday Teaser 2022!

As Thanksgiving rolls around the corner, you know what’s soon to follow? Our yearly Black Friday Special! And this year we’re starting it even earlier so you have plenty of time to grab the deals you’ve been waiting for.

This Monday we will be announcing all the specials we have going on, then on Wednesday the 23rd, the sale will begin! What products will be in this sale you ask? Well we can’t tell you just yet, but we can tell you that they are some of your favorite go-fast parts and we will have lots to choose from! So make sure to check back here on Monday and see what kind of deals you can score!

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Black Friday 2022

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Stock ATS-V Heads Make the Power!

The ATS-V continues to possess its own unique quirks and intricacies that make it stand out from every other mainstream platform out there. One particular instance of this was with our good friend Alex in Washington who was actually one of our very first customers we tuned more than four years ago. After installing our Purple Belt Package, he had his heads ported to see if he could pick up more power. Oddly enough, his ATS-V was actually down on power compared what we usually see with Purple Belt cars.

Alex decided to ship his ATS-V to us in Ohio so we could not only to confirm his ported heads were the problem, but also to install our complete Brown Belt Package! After swapping on a new set of stock LF4 heads and Jorge completing every detail of the Performance Package installation, we were able to strap his car to the dyno. Our suspicions were confirmed when we saw the power numbers we expected for a 92 octane/E85 Brown Belt car. When we finished up, his ATS-V made 689 whp with a beautiful powerband! The only thing left to do was get Alex’s ATS-V detailed and shipped back out to Washington for him to enjoy!

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92 Octane Brown Belt Package Dyno Chart Alex's ATS-V on the Dyno Alex's ATS-V

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Tapout Remote Tune of the Week!

Our work continues with our friends at Exodus Performance in Austin, Texas as we dish out another Remote Tune with the assistance of their incredible team. This was a quicker job, with the only mods being colder spark plugs and downpipes. Even so, Ronnie’s M6 ATS-V (#savethemanuals) still put down a killer 495 whp and 499 wtq with a glorious powerband.

Being able to push these ATS-Vs to their potential never gets old and we’ll be happy to work with Ronnie again if he wants to continue to add more mods! After all, as Carroll Shelby said, “there is never enough horsepower… just not enough traction”.

#TapoutTakeover #WontTap #UnderPromiseOverDeliver #BreakRecordsNotParts

Ronnie's Dyno Chart

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JB4 Tuner for the Win!

You’ve been asking for more affordable options for our CT4-V Blackwing tuning, so we recently tested the JB4 tuner on a 2022 CT4-V Blackwing M6. We carefully and methodically experimented with all the various calibration maps and custom fuel bias settings to find the sweet spot on these cars. We’re happy to report that this product works, and works very well!

Four baseline dyno pulls varied from 399 to 407 whp. After the installation of the JB4 and our custom map, final numbers were 490 whp, for an impressive 83 whp boost in power! These are huge gains for a car with zero mods. However, due to the increased boost, we would recommend changing out your stock spark plugs for colder plugs with smaller gaps. And just as important as that, is to make sure that they are installed with plenty of dielectric grease in the coil boot ends.

The boost curve and powerband were very smooth and broad with the JB4 tuner. Fueling was identical to stock and there was zero electronic throttle closure and no codes were set in the several hours of dyno testing we completed. We’ve continued to work with JB4 on refining this product and have updated our White and Blue Belt Packages to include the JB4 instead of the DCM which has substantially lowered the package cost. Special thanks to Terry Burger for working with us to test, validate and fine tune his product, and Chuck for volunteering his beautiful Blackwing!

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Even Better Stage 2 LPFP!

In our continual effort to develop and support the absolute best products possible, we’ve joined forces with OG Fuel Solutions once again to provide a new and improved LPFP for the LF4 platform. That being said, we are proud to now offer the GM Frankenpump Stage 2 LPFP!

Designed to provide the highest flowing single in-tank pump on the market (400+lph @70 psi), it’s compatible with gasoline, race gas, and ethanol blends up to E99 as well as race gas/ethanol blends. Another benefit is that it retains a fuel basket so you can ensure you always have fuel at the inlet of the pump during hard acceleration and cornering unlike bucketless setups. This is a complete drop in system so there’s no extra wiring or hoses to install which makes swapping out your old unit a breeze.

Even better still, this pump is designed to work with your in-tank venturis so you won’t lose any fuel capacity if you’re running a saddle tank. We’re recommending this pump for all Brown Belt Packages, and it certainly doesn’t hurt if you’d like to have a little more buffer room with your fuel system capabilities on your Purple Belt Package too!

#TapoutTakeover #ResultsNotInsults #UnderPromiseOverDeliver #WontTap #BreakRecordsNotParts

GM Frankenpump Stage 2 LPFP GM Frankenpump Flow Rate Chart