StageCraft
Build planner · B58
BMW B58 · Stage 1–3
Stage
your build.
Plan B58 upgrades before you spend. Honest power ranges, parts lists, labor math, and E85 flags — structured like a shop sheet, not a hype post.
Free · Estimate ranges · No founder claims
01
Honest ranges
Community and shop-sourced WHP/WTQ bands — never a fake single number.
02
Real build math
Parts price bands, labor hours, and an editable shop rate in one running total.
03
Fuel flags early
See 91 octane, E30 optional, or E85 recommended before you buy the turbo.
Interactive · Live totals
Build planner
Pick a stage. Review power, parts, labor, and fuel requirements before money leaves your account.
Build planner · B58
Stage package calculator
b58-catalog-v1
EST. RANGES · NOT GUARANTEES
Select stage
Bolt-ons plus tune: downpipe, intake path, and cooling support on the stock turbo.
Pick exact catalog SKUs under each row to tighten the parts total. Leave on category band for a planning range. No live price scrape — curated catalog only.
Power range
420–480
WHP
Torque range
450–530
WTQ
Fuel
91+ possible on conservative maps. E30–E85 blends commonly used to reach the upper reported range safely.
Running total
Category bands$3,920 – $6,550
- Parts
- $2,420 – $5,050
- Labor
- $1,500 · 12.0 HR
- Exact SKUs
- 0 / 6
Parts list · exact selection
Stage 2 package
Optional rows toggle · SKU tightens price
| Include | Part / exact SKU | Category | Price | Labor |
|---|---|---|---|---|
Stage 2 custom / OTS tune RequiredBand | Tune | $600 – $1,200 | 1.5 hr | |
Catless or high-flow downpipe Emissions and legality vary by region. RequiredBand | Exhaust | $450 – $900 | 3.0 hr | |
Cold air / panel intake RequiredBand | Intake | $250 – $550 | 1.0 hr | |
Front-mount / upgraded intercooler RequiredBand | Cooling | $700 – $1,400 | 3.0 hr | |
Charge pipe + BOV/DV as needed RequiredBand | Intake path | $300 – $650 | 2.0 hr | |
Plugs + ignition service RequiredBand | Ignition | $120 – $350 | 1.5 hr | |
LPFP upgrade (E85 upper range) Often needed when chasing E85 top-end on Stage 2 maps. OptionalBand | Fuel | $400 – $900 | 3.0 hr |
Data sources
- B58 Stage 2 shop packages (DP + IC + intake + tune)
- Public dyno results on stock turbo with supporting bolt-ons
- Enthusiast consensus: ~420–480 whp depending on fuel and hardware
- Exact SKUs: hand-curated b58-catalog-v1 partner catalog (Turner, ECS, Pure, VRSF, CSF, bootmod3) — not live inventory.
Snapshot
420–480 WHP
450–530 WTQ
Power, torque, and cost figures are community- and shop-sourced estimate ranges — not guarantees. Results vary by chassis, supporting mods, fuel quality, ambient conditions, and tuner calibration. Validate with your shop before buying.
Exact part prices are hand-curated catalog v1 list prices from public vendor pages and common street builds — not live inventory scrapes. Confirm fitment, generation (B58 Gen1/Gen2), and current pricing with the seller before buying.
Method
How the numbers work
- Hand-curated Stage 1–3 dataset only — no auto-generated power curves.
- Ranges reflect published dyno results and reputable tuner stage menus.
- Parts pricing is vendor-style bands; labor uses your editable hourly rate.
- Public content stays product-forward. No founder-named build stories.
Supported vehicles
Launch scope is B58 only. N54, N55, and S55 stay off the board until this path earns trust with real planners.
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