Lund Racing tunes a VMP Gen2 TVS-supercharged 2015 Mustang
By Steve Turner
Photos courtesy of Lund Racing
In the short time that the 2015 Mustangs have been on the streets, we have seen some impressive power gains from bolt-ons and power adders. We already know that a standard 2.3-liter TVS supercharger performs well on the latest Mustang, but we’ve been itching to see what one of VMP Tuning’s Gen2 TVS superchargers would do for the new-school Coyote.
If you aren’t familiar with VMP’s hot-rodded version of the 2.3-liter TVS supercharger, then do yourself a favor and read our intro story on this unit. In short, with the help of Roush, Justin Starkey of VMP Tuning re-engineered the inlet of the supercharger case and added numerous other detail improvements that result in a higher-flowing, more efficient supercharger
This blower has powered cars like Rebecca Starkey’s 2011 Mustang GT and Mat Brunette’s Shelby GT500 into the 8-second zone. Likewise, we know firsthand how well the unit works making big streetable power on our own Shelby GT500 project car.
“The 2015 engine loves to rev, it makes more horsepower and at a higher rpm than the previous-generation Coyotes,” Justin explained. “With the power increase on 2015 comes a slight loss in torque, and the torquiness of our Gen2 TVS blower makes up for that and complements the 2015 engine nicely.”
When we learned that Lund Racing’s Ken Bjonnes would be installing the VMP Gen2 blower on his personal S550, we jumped at the chance to cover it here on the front page. When it comes to modern Mustangs, there isn’t much you can do without tuning them, so having a tuner dialing in his personal car was sure to deliver some great results. It also marks the debut of an exciting new working relationship between VMP and Lund Racing.
“For several reasons we partnered with Lund Racing on our 2015 Kits. Jon and Ken started tuning on my blowers early with great results on Kelly Aiken’s (from BMR Suspension) 2015 Mustang and a few others. From there, offering Lund remote tuning sessions with our 2015 Kits sounded like a no-brainer,” Justin explained. “This has allowed VMP to be first to market with a TVS blower solution for both automatic- and manual-trans 5.0-liters. It has freed up resources to allow us to work on the CARB certifications for our kits, we expect to have the highest-horsepower 2015 supercharger kits that will pass emissions anywhere in the country. As a power-adder manufacturer we are looking towards the future.”
Looking to the future is key, especially when it comes to calibrating supercharger systems.
“Although the 2015 powertrain is similar to the 2014 and earlier Mustangs, the computer is all new and introduces quite a few new curveballs under the guise of torque control,” Ken said. “It is similar to some of the EcoBoost stuff, which we have been working on for some time, so this gave us a nice head-start. We also have three cars with three tuners working on them nonstop, so we really went all-in on R&D for this platform.”
The new level of the programming inside the new TriCor PCM has made it more difficult for the aftermarket to make aggressive mods on these new Mustangs, but the crew at Lund Racing are having a lot of success calibrating S550s.
“The number one issue that tuners are having with the TVS is it uses the older style throttle body with the new computer. This is a fairly high hurdle and took us quite some time to work through,” Ken explained. “Once you get past that, the next biggest issue like I mentioned earlier is torque control. It is widespread in the 2015. The majority of our time goes into these issues. Once they are solved, then normal tuning is fairly straightforward.”
Before he could tune the car up, Ken brought his GT to Power by the Hour in Boynton Beach, Florida, to have the system installed by technician Donnie Renfrow, which freed Ken up to take a few pictures for us! To those familiar with the TVS installation on the earlier Coyotes, it is relatively similar, and we have hit the highlights here.
Of course, what’s most important is that the combination of Ken’s tuning and the VMP supercharger produced not only impressive results on the dyno, but behind the wheel of the car as well.
“This is the first stick-shift car I’ve owned in a while and now that the car is dialed-in nicely, I absolutely love the car,” Ken enthused. “It feels like it was meant to come this way. It has clean, crisp power as high as I’m willing to spin it. That happens to be 8,000 rpm—so far…”
“I was surprised Ken made that much power with only the 82mm/10-psi pulley and 93 octane fuel,” Justin added. “I can’t wait to see the dyno results from the other pulley combinations.”