VinceBuilt’s 2026 G80 M3: 1,100+ HP Build
2026 BMW G80 M3 Competition xDrive
A sleeved S58. A Precision 7275. Fueling, cooling, and drivetrain upgrades built around the same goal: a four-figure G80 M3 for the street, occasional drag-strip visits, and time with the family.
The build brief
A 2026 M3 Competition xDrive built to deliver four-figure power while keeping its street manners and family-car comforts.
The target: more than 1,000 horsepower from a fully built S58, supported by the fuel system, cooling, transmission, and chassis hardware to match.
The project started with a DME unlock and MHD-based flex-fuel tuning. On E40, the original engine and factory turbos reached 721 WHP. The next stage replaced that combination with a sleeved VinceBuilt S58, a Precision Next Gen 7275 single turbo, and a complete supporting package.
A PURE Stage 2 transmission and upgraded converter handle the drivetrain side. Dual Walbro 525 pumps, Injector Dynamics 1750-series port injectors, MOTIV ReFlex+ control, and custom BMRS plumbing supply the fuel. CSF cooling and MMX differential support complete the systems around the engine.
After break-in and final calibration by Chris Kontos at MOTIV, the car recorded 676 HP and 515 lb-ft on 93 octane, then 1,162 HP and 1,003 lb-ft after adding Sunoco E85. Follow the engine work, dyno progression, and system-by-system parts guide below.
Inside the engine
The big turbo is easy to spot. The foundation underneath it is where Vince’s engine-building approach comes through.
A separate S58 became the basis for the build, keeping the car’s original engine out of the machining process. A successful leak-down test was only the start of the inspection.
After removing the cylinder head, Vince found pitting and marks he wanted addressed. Darton East sleeved the block. He assembled it with CP pistons, Carrillo rods and upgraded rod bolts, King coated main bearings, and ACL rod bearings coated by Calico.
HeadGames performed CNC pocket-port work, rather than a full intake/exhaust port. The GSC valvetrain package includes S2 billet camshafts along with the valves, springs, retainers, guides, and seals described by Vince.
Main and rod-bearing clearances, piston-to-wall clearance, and ring gaps were checked to Vince’s specification. The script also documents ARP hardware for the girdle, oil pump, reverse-thread oil-pump bolt, and harmonic balancer, plus a limited exhaust cam gear.
The DOCRACE single-turbo system uses a Precision Next Gen 7275. ReFlex-based port-injection control, custom fuel plumbing, and a MOTIV calibration through MHD+ support the new engine. CSF charge-air, heat-exchanger, engine-oil, and transmission cooling round out the package. Ross Racing check valves in the factory valve cover support the custom crankcase-ventilation arrangement; Vince specifies check valves rather than complete block-offs.
Vince installed the PURE Stage 2 transmission and upgraded converter before the engine swap, giving the gearbox its own break-in period. The official film records engine break-in, a head retorque, and fresh oil before final tuning. Those choices support the project’s reliability goal; long-term durability still depends on calibration, fuel, maintenance, and use.
The power progression
Each result belongs to a specific configuration. The early stock-engine tune and the completed single-turbo build are two different chapters.
| Configuration | Power | Torque | What changed |
|---|---|---|---|
| Original engine baselineBefore engine tuning | 509 WHP | 470 lb-ft | Factory engine, turbos, intake, and exhaust. PURE transmission had already been installed. |
| First flex-fuel tuneE40 blend | 721 WHP | 647 lb-ft | DME unlock, MHD-based custom flex-fuel tuning; factory engine and turbo hardware. |
| Built S58 · pump gas93 octane | 676 HP* | 515 lb-ft | The valid pump-gas result confirmed in the official transcript. The 729-HP shift spike is excluded. |
| Built S58 · ethanolFinal session · Sunoco E85 | 1,162 HP* | 1,003 lb-ft | VinceBuilt engine, Precision 7275, supporting fuel system, and MOTIV custom calibration. |
The initial E40 stage added 212 WHP over the original 509-WHP baseline while retaining factory engine and turbo hardware.
Vince’s sleeved S58, transmission, fuel system, cooling, and differential support turn the project into a complete build.
Chris Kontos at MOTIV worked through the pump-gas revisions before the final ethanol session reported 1,162 HP.
The full story, on film
The full video will appear here once the release link is available.
Engine assembly · single-turbo installation · supporting systems · final dyno session
The parts behind the build
Use this guide to understand Vince’s combination and explore the matching Kies listings. Custom engine work and items without a verified listing are identified alongside the catalog parts.
Build your cart
Start with all 25 linked catalog items selected. Review the exact options, remove anything you already own, then add your selection to your existing cart.
Custom engine work, machining, unlisted fueling components, wheels, tires, the DME unlock, and installation are arranged separately. This adds the linked catalog selection, not a complete turnkey build.
Review current prices, availability, and options before adding.
The hardware that changes the S58’s character.
Precision Next Gen 7275, twin-scroll manifold with the larger 1.5-inch runners, and twin Turbosmart wastegates. The linked kit selects the 1.5 Schedule 40 manifold without the optional catch can; Vince uses a separate custom ventilation arrangement.
View part at KiesVince’s listed single-turbo inlet, with 1/8-inch NPT and 12AN intake ports. Confirm the port configuration before ordering.
View part at KiesPaired with the HFD midpipe. The film records approximately 66 lb for the upgraded exhaust, a 25-lb reduction from stock. Vince’s parts record specifies burnt tips; confirm material before selecting stainless steel or titanium.
View part at KiesDirect link to the midpipe-only stainless option, avoiding a second complete exhaust system. The current listing is marked pre-order.
View part at KiesThe two-valve configuration listed for the build. Adds remote control of compatible exhaust valves.
View part at KiesA coordinated fuel system and a calibration specific to this engine.
The domestic unlock service is documented in Vince’s build record. Its old product listing is currently unpublished. Contact Kies for the current compatible unlock service rather than ordering from an outdated link.
Custom specification · consult the builderThe engine-tuning platform used for this build. A license is separate from Vince’s custom calibration.
View part at KiesCalibrated by Chris Kontos at MOTIV Motorsport. Linked option: G-Series, aftermarket single-turbo kit, flex fuel.
View part at KiesLinked PT-CAN2 / Gen2 B58–S58 / EcuTek & MHD+ harness. The wiring kit does not include the ReFlex+ controller, injectors, or every required sensor.
View part at KiesThe six-plug option documented for the build, without the optional socket or feeler gauge. Gap to the engine builder and tuner’s specification.
View part at KiesMOTIV ReFlex+ controls Injector Dynamics 1750-series port injectors alongside the factory direct injection. Dual Walbro 525 in-tank pumps feed custom BMRS plumbing: -8AN supply and -6AN return. Vince built the lines and Tefzel wiring in-house; a four-port controller manages boost. Specify the complete system with Kies rather than treating the wiring harness as a complete fuel kit.
Custom specification · consult the builderThe early E40 result used flex-fuel tuning. The final session uses Sunoco E85 in the official transcript; measured final ethanol content and fuel grade remain to be confirmed. No substitute sensor kit is assumed.
Custom specification · consult the builderFour distinct cooling upgrades, each with a different job.
The integrated S58 charge-air cooler / intake-manifold upgrade. The build record links the raw-billet listing; confirm the car’s final finish.
View part at KiesThe front-mount heat exchanger listed for the charge-cooling circuit. Kept distinct from an engine coolant radiator.
View part at KiesThe engine-oil cooling upgrade in the build record.
View part at KiesThe dedicated G8X transmission cooler with rock guard. This is a separate component from the engine oil cooler.
View part at Kies →The supporting hardware is part of the power story.
Vince paired the rebuilt transmission with a PURE-selected upgraded converter developed for this combination. Confirm the converter specification, core arrangements, and any transfer-case work directly with Kies/PURE; the exact custom converter is not established by the standard listing.
View part at KiesThe transmission software used alongside the hardware build. Coordinate the gearbox calibration with the engine’s torque strategy.
View part at KiesThe film confirms the MMX differential pan and added differential support. This current Track Pack listing includes a high-capacity pan, dual mount, and heat shields; the listing’s heat shields are not separately confirmed on Vince’s car.
View part at KiesThe item called a “brace” in the planning record links to this rear bushing. Listed here by its actual catalog name; confirm package overlap before ordering.
View part at KiesControl-arm bearing set documented during the build’s chassis work.
View part at KiesThe G8X brace in Vince’s installed-parts record.
View part at KiesThe details that finish a car built to be used.
Custom beadlocks from 8Twelve in Austin, Texas, in a square 19 × 10 ET10 setup. Their former Kies listing is archived; contact Kies for sourcing and vehicle-specific clearance checks.
Custom specification · consult the builderThe assembly script records 285/35R19; the official film confirms Nitto NT555RII tires and a square wheel-and-tire setup chosen to allow rotation. Have Kies check your xDrive application; this custom combination is not universal G80 fitment.
Custom specification · consult the builderInstalled to address wheel-liner clearance in the build sequence. Confirm your wheel and tire combination with Kies.
View part at KiesThe body-protection guards documented for Vince’s car. Linked G80/G82 option from the build record.
View part at KiesThe magnetic paddle-shifter upgrade listed for Vince’s G80.
View part at KiesLinked option: stainless-steel fasteners with blue washers. The final film credits Downstar and Blackline for the engine-bay finishing details. Match exact visible components against the release photos.
View part at KiesThe turbo installation consumable featured in the script. Use only as directed by the product manufacturer and builder.
View part at KiesSpacers are noted in Monday’s build update and center caps appear in the script. Sizes and exact versions are not established, so no unverified product is substituted.
Custom specification · consult the builderThe engine specification documented in the script, beyond the bolt-on catalog.
Darton East sleeves; CP pistons; Carrillo rods and upgraded rod bolts; King coated main bearings; ACL rod bearings coated by Calico. Exact bore, compression ratio, part numbers, and tolerances are specified by the builder.
Visit VinceBuiltCNC pocket-port work, specifically distinguished by Vince from full intake and exhaust porting. Coordinate the complete head and valvetrain specification with the engine builder.
Custom specification · consult the builderThe listed camshaft set is one part of the complete GSC valvetrain package described in the script. Springs, retainers, valves, guides, and seals are not assumed to be included in the camshaft listing.
View part at KiesThe script documents girdle, oil-pump and balancer hardware, a limited exhaust cam gear, replacement eccentric shaft, and the secondary oil-squirter deletes. Individual part numbers and final shaft treatment require builder confirmation.
Custom specification · consult the builderStart with how you want to use the car. Kies can help coordinate the turbo, fueling, calibration, cooling, and drivetrain around that plan.
Before you build
No. The final build uses Vince’s sleeved, fully built S58 with upgraded pistons, rods, bearings, cylinder-head work, and GSC valvetrain components. The 721-WHP E40 result belongs to the earlier factory-engine stage.
The parts guide links the documented catalog components. This car also uses custom machining, engine assembly, fuel-system work, and calibration. A complete build needs a vehicle-specific specification and quote.
It describes Vince’s goal and the attention paid to measurements, assembly, break-in, cooling, and supporting hardware. A dyno result alone does not establish long-term reliability or guarantee the same performance on another car.
The official transcript confirms the final horsepower and torque values, including lb-ft units. The early results are explicitly labeled WHP in the assembly script; the final chart is still needed to confirm the final horsepower basis, correction standard, and measured ethanol percentage.
Build credits: VinceBuilt · Kies Motorsports · Chris Kontos / MOTIV Motorsport · Darton East · HeadGames · GSC Power-Division · DOCRACE / Precision · PURE Drivetrain Solutions · CSF · Injector Dynamics · Brown & Miller Racing Solutions · Ross Racing · Blackline · Matt Meadows / Insomnia and the component makers linked above.
Build details and results: official build-film transcript, assembly script, and Kies’ project record. Figures describe this vehicle under its test conditions; they are not guaranteed outcomes. Confirm fitment and applicable road-use requirements for your location and parts selection.
