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CALIFORNIA · MAIL-IN SERVICE

VW/Audi Simos ECU Clone / Immo-Off in California

Ship your module from Los Angeles or anywhere in California — we typically complete the work in 24 hours and ship it back at the return speed you choose at checkout — standard to overnight.

$250 flat Fast Turnaround ~2-3 day USPS from CA
Text Before You Buy

Why California customers mail in vw/audi simos ecu clone / immo-off

California has roughly 31 million registered vehicles, and European luxury (BMW, Mercedes, Audi) make up much of what Los Angeles-area shops and owners mail us. European platforms cluster in Los Angeles, San Francisco Bay Area, San Diego, and most local Los Angeles shops sub bench jobs like vw/audi simos ecu clone / immo-off to a specialist instead of tooling up for one car. Cross-country west — about 2-3 days each way.

Metros we serve in California

Los AngelesSan Francisco Bay AreaSan DiegoSacramento

California at a glance

  • ~31M registered vehicles statewide
  • Most common: European luxury (BMW, Mercedes, Audi)
  • California requires a biennial Smog Check emissions inspection in most counties through the BAR program.

What you get

  • Your original Simos ECU's identity, immobilizer data, coding, and learned adaptations cloned onto your donor — immobilizer fully preserved, existing keys keep working
  • Or, on the immo-off path, the immobilizer requirement removed from the module so it runs on a standalone, orphaned, or swapped platform
  • Donor part-number compatibility verified against your VIN and ECU labels BEFORE you ship or buy anything
  • A full bench read and verify pass of both units before a single byte is written
  • Checksum-correct write with a powered communication test on a stable, regulated bench supply before return
  • Plain install notes — what happens at first key-on, and whether any relearn or adaptation applies at the car
  • Modules returned with tracking, at the return-shipping speed you select and pay for at checkout

Shipping timeline — California ↔ Arlington TX

USPS Priority routes west through the Southwest network; usually 2-3 days given the distance. Typical round-trip from Los Angeles or anywhere in California:

  1. Day 0

    You ship

    USPS Priority from CA, ~$12

  2. Day 2-3

    We receive

    Workshop opens + inspects

  3. Day 3

    Work done

    Typical 24-hour bench turnaround

  4. ~Day 7

    Back to you

    Return speed you chose at checkout

California FAQ

Common questions from customers shipping from California.

How long does shipping take from California to your Arlington TX workshop?
USPS Priority Mail from Los Angeles, CA reaches our Arlington workshop in about 2-3 business days. USPS Priority routes west through the Southwest network; usually 2-3 days given the distance. We start work the same day your module arrives and typically ship back next business day at the return speed you chose at checkout.
How much does it cost to ship a module from California?
USPS Priority flat-rate from California to Arlington TX runs about $12. The customer pays shipping to us; return shipping back to California is selected at checkout — $24.95 standard (3-5 business days), $54.95 UPS 2-Day, or $94.95 UPS Next Day Air, flat nationwide. Cross-country west — about 2-3 days each way.
Do you accept vw/audi simos ecu clone / immo-off modules from California?
Yes — we receive modules from Los Angeles, San Francisco Bay Area, San Diego, Sacramento and the rest of California regularly. With about 31 million registered vehicles statewide, European luxury (BMW, Mercedes, Audi) are the bulk of what we see from California.
Is there a vw/audi simos ecu clone / immo-off shop in Los Angeles I should use instead?
Most Los Angeles shops don't keep the bench equipment for vw/audi simos ecu clone / immo-off — they'd forward the module to a specialist anyway, which adds a markup and a middleman. Going direct to us is usually faster and cheaper. Cross-country west — about 2-3 days each way.
Does California vehicle inspection or emissions testing affect this service?
California requires a biennial Smog Check emissions inspection in most counties through the BAR program. Our service is bench module programming only — you remain responsible for your vehicle's compliance with all California and federal requirements.
What is a Simos ECU, and how do I know I have one?
Simos is the Continental (formerly Siemens VDO) petrol engine-control family VW Group ran alongside Bosch from roughly 2000 through 2020. The family name and part number are printed on the ECU label — you will see something like Simos 8.5 or Simos 18.1 on the sticker or etched into the housing. Send us a photo of that label plus your VIN and we confirm the exact generation and the service path before you ship or buy a donor.
Why won't a used Simos ECU just work when I plug it in?
Because the immobilizer relationship is stored inside the ECU and still belongs to the donor car. When you install it, the module and the vehicle's immobilizer system fail to agree, so the engine cranks and cranks without ever firing — often with an immobilizer-active warning or a stored P1570. Cloning copies your original's identity onto the donor so the mismatch never happens; immo-off removes the requirement entirely on builds that have no key system to satisfy.

Full details

See the complete VW/Audi Simos ECU Clone / Immo-Off service page

Compatibility list, what it fixes / doesn't fix, shipping instructions, warranty.

Full Service Page

Same service from other states:

AlabamaAlaskaArizonaArkansasColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusetts

Ship from California today

Pay now, get the Arlington TX shipping address by email, drop it in the mail. Full round-trip from Los Angeles: about a week.

(817) 678-3252