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Stage 4
Stage 3: Upgraded Turbos
Beyond stock turbos. For the customer who wants to run 9s.
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Install: 3–5 days
The Stage 3: Upgraded Turbos for the G8X / S58 includes 5 parts, targeting 700–750 WHP on 93 octane.
The G8X / S58 makes 420-450 WHP from the factory. With the Stage 3: Upgraded Turbos, expect approximately 700–750 WHP on 93 octane.
| Fuel | Est. WHP |
|---|---|
| 93 Octane | 700–750 |
| E30 | 780–850 |
| E50 | 850–900 |
| E70+ | 850–900 |
What's Included
Pure Turbos S58 Stage 2+
Pure Turbos
$3995
Hybrid turbo upgrade for S58. Upgraded billet compressor wheel, larger turbine wheel, upgraded bearing housing. VSR bal…
MHD ECU Unlock
MHD Tuning
$549
All-in-one flash tuning license with maps for 93, E30, E50, and E85. Flash OTS maps or custom tunes directly from your …
ApexBuilt G8X S58 GESI HFC Downpipes
ApexBuilt
$3000
EPA-approved GESI 400cpsi catted downpipes for G8X M2, M3, and M4. 49-state legal. TIG-welded T304 stainless steel. 20-…
IRL V2 G80 G82 Catback Valved Exhaust
IRL
$2899
V2 catback valved exhaust for the G80 M3 and G82 M4. Electronic valve control for quiet daily driving or full race soun…
MAD S58 Front Mount Intakes
MAD
$489
Front mount silicone intakes for S58 twin-turbo inline-six. Maximum airflow with enhanced engine sound. Direct fitment …
Ready to build?
Get a custom quote for the Stage 3: Upgraded Turbos installed on your G8X / S58.
Request a Quote Browse All S58 Parts