KESS3 Data Logger for Cars: Free Live Logging for Active Subscribers

This article was adapted for drivers and tuning professionals in the United States by Viezu USA. Measurements are shown in US units alongside the originals.

KESS3 Just Gained a Big New Feature

Alientech has rolled out an important new capability for the KESS3 tuning tool, and we're excited to pass it on.

KESS3 Data Logger is now live for cars. It gives shops and tuners a practical way to record and review live vehicle data right through the KESS3, with no additional hardware needed.

If your KESS3 has an active subscription, you get it at no extra charge.

That says a lot. Current users pick up a valuable new function as part of their existing setup, lapsed subscribers have one more good reason to renew, and shops on other tools may find even more reason to look at switching to KESS3.

What It Means for Your Shop

KESS3 Data Logger is built to help you capture and review live operating data for:

• diagnostics
• tuning analysis
• troubleshooting
• performance review

Over the OBD connection, it can log a range of useful parameters depending on the vehicle and available protocol. According to Alientech's webinar presentation, that can include engine speed, vehicle speed, throttle position, boost pressure, lambda-related values, temperatures and more, plus GPS-based data from the KESS3's internal GPS receiver when there's signal. The webinar also makes clear GPS is a bonus, not a requirement, so logging still works where there's no GPS, such as on an indoor dyno.

For a busy shop, that means a clearer view of what the vehicle is doing in real conditions, on the road, during fault-finding or when checking the results of tuning changes.

Headline Benefits

A standout point: no extra hardware. Per the launch webinar, the feature is built right into Alientech Suite, so there's no separate logging device or extra software to get started. The presentation also highlights built-in threshold monitoring, markers during recording, offline session storage with cloud upload later, a cloud dashboard for review, session sharing and CSV export.

For shops, that adds up to:

• No extra logging hardware to buy
• Logging built into your Alientech Suite workflow
• Live viewing of selected parameters
• Thresholds that flag values running too high or too low
• Markers to tag key moments in a recording
• Dashboard review of recorded sessions
• CSV export for deeper analysis and record keeping
• Cloud sharing for teamwork or customer review

Together, those make the Data Logger more than a tuning feature. It's a practical shop tool for validation, comparison and troubleshooting.

Why This Matters

Plenty of shops already know logging is valuable, but extra equipment, extra cost or a clunky, disconnected workflow can get in the way.

That's what makes this release important. The Data Logger lives inside the KESS3 environment many dealers already use. Per the webinar walkthrough, it works over the vehicle's OBD connection, taps the KESS3's internal GPS where available, and saves sessions even without an internet connection during the test, uploading them once the tool is back online. The presentation also notes the dashboard history keeps up to 250 sessions before older entries are overwritten, with CSV export for long-term storage of important logs.

In practice, it gives shops a more connected way to:

• review vehicle behavior during testing
• compare stock and tuned operation
• spot problems more clearly
• share session data securely
• keep better shop records

Already on KESS3? It adds more everyday value. Subscription lapsed? It strengthens the case to renew. Using other tools? It makes KESS3 even more appealing as an all-in-one pro tuning platform.

Watch the Data Logger at Work

To show what this looks like in practice, we filmed a short demo of Simon running KESS3 Data Logger in our shop.

A full demo video is on the way later this week, walking through the feature, how it looks in the software and how to use it in a real tuning and shop environment.

Already Own a KESS3? Next Steps

Active subscription

You can start using the Data Logger today. As announced in the webinar, it's included at no extra cost for active subscribers, and the Viezu tech team is happy to help you get going.

Expired subscription

Here's another strong reason to renew. Bringing your KESS3 subscription current unlocks the latest functions, including the new Data Logger for cars.

Running other tools

If you're on other tuning tools and curious about what KESS3 now offers, it's a good moment to take a closer look. Built-in logging, dashboard review and no added logging hardware give KESS3 even more value for shops that need more than file reading and writing.

Viezu can set up a free demo, online or in person, with no obligation to buy.

Talk to the Viezu Trade Team

Want to buy a KESS3, renew a subscription or see how the Data Logger could fit your shop? Our trade sales team can:

• review your current setup
• discuss subscription renewals
• arrange a free KESS3 demo
• help you decide whether KESS3 is right for your shop

Already have an active subscription and need help with the feature? Our tech team can help too. Contact the Viezu USA team or book a complimentary VIP consultation to talk through your tuning options.

Why Viezu?

When it comes to remapping and tuning file writing, Viezu is a global leader for several reasons:

• 7-day support: We don't just sell professional tuning tools and software. Our tech team is available by phone and online seven days a week, so if you're stuck on a tricky ECU at 6 PM on a Saturday, we're here.
• World-class facilities: Our training is backed by real-world R&D on our 3,000 hp-rated all-wheel-drive dyno, and every technique we teach has been proven in-house.
• Insurance-backed warranty: We're confident enough in our custom tuning files to offer a supplementary insurance-backed warranty against component failure, a safety net generic file providers can't match.
• Dedicated training: We're EVC Platinum partners with a dedicated training division, the Viezu Technical Academy.

Explore KESS3 protocols.

US emissions compliance note

In the United States, modifying, removing or disabling emissions-control equipment (including DPF*, EGR*, SCR*/DEF* and catalytic converter systems) on a vehicle used on public roads may violate the federal Clean Air Act and EPA rules, and in California and other states that follow CARB standards, additional restrictions apply. Any off-road, race or competition-only modification described here is not intended for street use. Nothing in this article claims that any product or calibration is EPA- or CARB-certified or street legal. For guidance on options for your vehicle, contact Viezu USA.

US note: Performance modifications can affect your auto insurance. Tell your insurer about any ECU tune or modification before driving on public roads.

Talk to Viezu USA

Want to know what Viezu can do for your vehicle or your business? Request a performance upgrade quote, browse viezuusa.com or contact the Viezu USA team.