LS Swap and EFI Tuning for Tyler, TX
Midgard Industries tunes LS swaps, Holley and ACES EFI systems, and GM factory ECUs for Tyler-area builders. The shop is in Longview, about 40 miles east of Tyler on I-20, and most Tyler customers either bring the vehicle over by appointment or mail in their PCM.
Tuning services for Tyler customers
Every service is available to Tyler builders, either in person in Longview or remotely.
LS swap base tune
A swap-ready startup calibration for P01 and P59 PCMs with VATS removed and injectors, MAP, fans, and transmission set up for your combination. From $100.
LS VATS delete
Removes factory anti-theft so a swapped LS starts and stays running in its new chassis. From $50.
LS speed density tuning
MAF delete and VE table setup for cammed or boosted LS builds where a MAF won't work well. From $150.
Holley EFI tuning
Terminator X, Sniper, HP, and Dominator: startup configuration, idle, fuel, and ignition tuning from data logs.
ACES EFI tuning
Jackpot, Killshot, Deuces Wild, Joker, and Wildcard calibration for clean starts, steady idle, and good drivability.
HP Tuners tuning
GM factory ECU calibration for LS engines and GM trucks, including fuel, spark, idle, and transmission tuning.
How tuning works for Tyler customers
In person, by appointment
Bring the vehicle to the shop in Longview. From most of Tyler it's about a 45-minute drive east on I-20. We go over the combination, log the engine, and make calibration changes on the spot. This is the best option for a first start, idle problems, or drivability issues that need to be seen in person.
Mail-in PCM
For LS swaps on a P01 or P59, you can ship or drop off the PCM and get it back programmed with a swap-ready base tune. Typical turnaround is 1-2 business days after the ECU is received. Order a mail-in LS swap base tune online.
Remote log-and-revise
If you have HP Tuners, a Holley handheld or laptop, or ACES software, you can send data logs and get revised tune files back without leaving Tyler. This works well for refining part-throttle fueling and idle after the engine is already running.
Before you come over
- Engine and cam specs
- Injector part number
- MAP sensor type (1, 2, or 3 bar)
- Transmission and rear gear ratio
- Tire size
- Any data logs you already have
Not sure about some of these? The LS swap startup checklist walks through them.
Schedule an Appointment Call (430) 215‑4536Tyler tuning questions
Is there an LS swap tuner in Tyler, TX?
Midgard Industries serves Tyler from its shop in Longview, about 40 miles away. Tyler customers can bring vehicles in by appointment or mail in a P01/P59 PCM for a base tune.
Do I have to bring the vehicle to Longview?
No. Mail-in base tunes and VATS deletes only need the PCM, and Holley, ACES, and HP Tuners tunes can be refined remotely from your data logs.
How much does tuning cost?
An LS swap base tune starts at $100, a VATS delete at $50, and speed density setup at $150. Holley, ACES, and HP Tuners calibrations start at $400. See pricing for details.
How long does a mail-in tune take?
Typical turnaround is 1-2 business days after the ECU is received.
Also serving the rest of East Texas, including Longview, Kilgore, Gilmer, Marshall, and Henderson. See the East Texas service area.
Don't want to tune it yourself?
Mail in your P01/P59 and get a VATS-deleted, swap-ready base tune for $100. Typical turnaround is 1-2 business days after the ECU is received.
