BMW E39 Performance ECU Software / Tuning

Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +15HP +9LB/FT gains! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3138899

Mfg#:

N3MS41

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$349.00

This product was last offered at the strikethrough price on
05-02-2026

$314.10 USD

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on orders $49 and up

Lifetime Replacement

Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +15HP +12LB/FT gains! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with a production date from 09/1998

Brand:

ES#:

3138953

Mfg#:

N4MS42

ON SALE! SAVE 10%

$349.00

This product was last offered at the strikethrough price on
05-02-2026

$314.10 USD

Add to Cart

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Lifetime Replacement

Performance software with a 7,400RPM rev limit and sharper "Shark-tuned" throttle response. +15HP +12LB/FT gains when used with 91 octane fuel! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3138901

Mfg#:

N4M5

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$349.00

This product was last offered at the strikethrough price on
05-02-2026

$314.10 USD

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Lifetime Replacement

Performance software tuned for M50 manifold, S52 cams, & cold air intake affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with a production date up to 09/1998

Brand:

ES#:

3138888

Mfg#:

N328CAMS

ON SALE! SAVE 10%

$349.00

This product was last offered at the strikethrough price on
05-02-2026

$314.10 USD

Add to Cart

Free Shipping

Lifetime Replacement

Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3138972

Mfg#:

N4MS4353

ON SALE! SAVE 10%

$349.00

This product was last offered at the strikethrough price on
05-02-2026

$314.10 USD

Add to Cart

Free Shipping

Lifetime Replacement

Performance software with a 7,400RPM rev limit and Euro throttle response. +15HP +12LB/FT gains when used with 91 octane fuel! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3138910

Mfg#:

N4M5BMRL

ON SALE! SAVE 10%

$349.00

This product was last offered at the strikethrough price on
05-02-2026

$314.10 USD

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Lifetime Replacement

Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +5HP +5LB/FT gains! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3138971

Mfg#:

N4MS4352

ON SALE! SAVE 10%

$349.00

This product was last offered at the strikethrough price on
05-02-2026

$314.10 USD

Add to Cart

Free Shipping

Lifetime Replacement