RennTech

RENNtech ECU Upgrade BMW 335d E90 (N73N2 Steptronic Diesel) 2007-2011

Name: RENNtech ECU Upgrade BMW 335d E90 (N73N2 Steptronic Diesel) 2007-2011
Brand: RennTech
SKU: ECUBMW:54.E90.335dN73
Price: 1200.00 USD
Availability: InStock

Usually ships within 24 hours

$1,200.00

Product details

Vendor RennTech
SKU ECUBMW:54.E90.335dN73

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RENNtech ECU Upgrade BMW 335d E90 (N73N2 Steptronic Diesel) 2007-2011

Our proprietary BMW ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units.

These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary tuning software and approach for BMW is completely unique and independent from our Mercedes tuning program.

RENNtech tuning software for BMW offers significant gains in performance and throttle response without sacrificing your daily driver BMW's reliability.

By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios, increasing the top speed limiter, improving engine cooling and modifying boost mapping for turbo charged vehicles; RENNtech performance software unleashes your BMW's true potential.

Stock Performance 335d E90 (2007-2011- N73N2 Steptronic Diesel):

265 HP /425Â LB-FTÂ

Modified Performance:

346 HP / 480Â LB-FT

Gains:

+81 HP / +55 LB-FT

Vehicle Fitment Chart:

Make	Model	Years
BMW	335d E90	2007-2011

Note:

Images are for representation purpose only and may differ depending on application.

⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm.

The AutoHouse Advantage: Global sourcing power paired with specialized expertise. We utilize an expansive supply network of over 600,000 SKUs to deliver world-class components with an enthusiast’s precision.

Price Match Guarantee:	We are committed to providing the best value. If you find a lower advertised price from a verified vendor, we will match it. Shop with confidence knowing you’re getting the industry's lowest price.
Project Incentives:	We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order: • AH25 — $25 OFF $500+ \| • AH60 — $60 OFF $1000+ • AH180 — $180 OFF $3000+ \| • AH400 — $400 OFF $6000+ • AH630 — $630 OFF $9000+
Fitment Guarantee:	Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
Authorized Retailer:	AutoHouse Supply is an Authorized Retailer for our premier brand partners. We utilize an extensive wholesale network to ensure all 600k+ SKUs in our catalog are 100% genuine, factory-fresh, and sourced through legitimate industry channels.
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Secure Logistics:	High-value performance parts deserve high-level security. We utilize fully encrypted, PCI-compliant checkout and premium, insured carriers to ensure your investment is protected from the moment you click 'Order' until it’s in your hands.

Building something big? If you’re planning a full overhaul or need a custom quote, reach out to our team via our Contact Page.

Precision Support: Whether you are dialing in a daily driver or sourcing components for a high-performance exotic, our team is here to ensure your project stays on track. Use the channels below for sales, technical assistance, or order updates.

Direct Consultation:	For sales inquiries, help applying Project Incentives, or immediate assistance with a new order: (828) 588-5888 Monday – Friday \| 9am – 5pm EST
Technical & Fitment:	To qualify for our Fitment Guarantee, please email your vehicle’s Year, Make, Model, and any existing modifications to: support@autohousesupply.com Our experts will review your specifications and provide written confirmation for your build.
Order Inquiries:	For tracking updates or status inquiries on existing orders, please reach out via our Contact Form. Having your order number ready will allow us to provide the most efficient update.
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Need an immediate answer? Our Live Chat feature (available in the bottom corner) is the fastest way to connect with a representative during business hours.

At AutoHouse Supply, we are enthusiasts first. Our goal is to provide a seamless logistical experience so you can focus on your build. Please see our standard guidelines below.

Secure Shipping:	We offer FREE Ground Shipping within the 48 contiguous United States. Most in-stock orders process within 48 hours. For your security, high-value performance parts require a signature upon delivery to ensure they reach you safely.
Transit Protection:	Please inspect your order immediately. Damage must be reported within 48 hours. For freight/LTL items, if you cannot inspect the contents immediately, please write "Subject to Inspection" on the delivery receipt before signing.
Flexible Returns:	Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
Exclusions:	To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.

Need assistance? Reach out via our Contact Form before shipping any items back so we can provide you with an RMA number.

Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.

Verify Your Build:	If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
Our Promise:	When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.

Questions? Send us your Year, Make, and Model via our Contact Form and we’ll get you a definitive answer so you can buy with confidence.

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Found a lower advertised price? We’ll match it, guaranteed.

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We ship worldwide with package consolidation services available.

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RENNtech ECU Upgrade BMW 335d E90 (N73N2 Steptronic Diesel) 2007-2011

RENNtech ECU Upgrade BMW 335d E90 (N73N2 Steptronic Diesel) 2007-2011

Vehicle Fitment Chart:

Note: