Stop renting
your tuning tools.
You already know how to tune. You don't need another company deciding how much each vehicle costs you. KnockBox is one flat price. Unlimited reads. Unlimited writes. No credits. No surprises. No permission needed.
What you're actually spending
Credit-based tools
$4,200+
Per year at 7 vehicles/month.
That's before unlock fees.
KnockBox
$1,800
Per year. Unlimited vehicles.
Same truck twice? Still free.
Sound familiar?
You're paying for permission to do your own job.
Every credit you buy is a reminder that someone else controls your workflow. And they know you'll keep paying because switching feels impossible.
Credits that never stop bleeding
$50 per credit. 2-4 credits per ECM. Another 2-4 for the TCM. That customer who came back for a tweak? More credits. The math never works in your favor.
Support that doesn't support you
11% issue resolution rate. Days to get a response. Meanwhile your customer's truck is sitting in the bay and you're eating the downtime.
Unlock fees on top of credits
Already bought credits? That's not enough. Some vehicles need a separate $250-$1,500 unlock before you can even start. They found another way to charge you.
You don't own anything
Your credits. Your licenses. Your vehicle slots. All tied to their servers, their rules, their pricing changes. They could raise prices tomorrow. What are you going to do about it?
Built different
One price. Unlimited everything. Actual support.
KnockBox is what tuning software should have been from the start. Professional tools that respect your time, your money, and the fact that you already know what you're doing.
Unlimited reads & writes
Flash 1 truck or 100. Reflash the same truck 50 times while you dial it in. No credits consumed. No guilt. No mental math.
Read, select, flash
Plug in. Read the current calibration. Pick the right file from your library. Flash. That's it. No doctorate in software required.
Brick protection built in
Battery monitoring, CAN integrity checks, file validation, and automatic backup before every write. If something goes wrong, recovery is one click.
Support from someone who answers
Not a ticket queue. Not a chatbot. A real person who knows these trucks. Same day. Every time. Because your truck shouldn't sit in a bay waiting for an email.
Variant-matched file library
KnockBox knows what ECU is in the truck and only shows files that are safe to flash. No guessing. No cross-flashing a 2012 file onto a 2016.
Works offline
No internet in the shop? No problem. KnockBox works without a connection. Background auth check every 7 days when you do connect. No cloud dependency for flashing.
Vehicle Coverage
Diesel and LS. More coming.
We verify every platform before we call it supported. If it's on the list, it works. No asterisks. No "partial support." It either works completely or it's not listed.
GM Duramax — Chevy Silverado / GMC Sierra 2500HD & 3500HD
GM LS Platform — Same ECM, more vehicles
Ford Powerstroke — F-250 / F-350 Super Duty
Dodge / Ram Cummins — 2500 & 3500
Simple pricing
One plan. No hidden fees. No credits. Ever.
You'll never open KnockBox and wonder what something costs. Because the answer is always the same: nothing extra.
Professional
$150
per month
Access is by application only. We vet every subscriber personally because we'd rather have 50 shops who trust the tool than 500 who abuse it.
You already know this makes sense.
The only question is how many more credits you're going to buy before you do something about it.
Include your shop name, what vehicles you work on, and what you're currently using.