RennTech

RENNtech Porsche 997 GT3 3.8L ECU Upgrade (365 HP / 300 LB-FT) 2009-2011

Name: RENNtech Porsche 997 GT3 3.8L ECU Upgrade (365 HP / 300 LB-FT) 2009-2011
Brand: RennTech
SKU: ECUPOR:54.997.2GT3
Price: 1750.00 USD
Availability: InStock

Usually ships within 24 hours

$1,750.00

Product details

Vendor RennTech
SKU ECUPOR:54.997.2GT3

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RENNtech Porsche 997 GT3 3.8L ECU Upgrade (365 HP / 300 LB-FT) 2009-2011

Our proprietary Porsche 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 Porsche is completely unique and independent from our Mercedes tuning program.

RENNtech tuning software for Porsche offers significant gains in performance and throttle response without sacrificing your daily driver Porsche's reliability. By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios, increasing the engines rev limiter and modifying boost mapping for turbo charged vehicles, RENNtech performance software unleashes your Porsche's true potential.Â

997 GT3 3.8L Stock Performance:

428 HP / 317 LB?FT

Modified Performance:

450 HP / 332 LB/FT

Gains:

+22 HP / +15 LB-FT

Vehicle Fitment Chart:

Make	Model	Years
Porsche	GT3	2009-2011

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.

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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.
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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.

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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.
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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.
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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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RENNtech Porsche 997 GT3 3.8L ECU Upgrade (365 HP / 300 LB-FT) 2009-2011

RENNtech Porsche 997 GT3 3.8L ECU Upgrade (365 HP / 300 LB-FT) 2009-2011

Vehicle Fitment Chart:

Note: