What we see most
Atto · Seal · Han
File desk · circuit / motorsport
BYD tuning file service
What BYD tuning file service means in this lab
BYD is mostly electric and hybrid. If you have a calibration/file job that is real, send it as a special request with the dump. We will not list a fake Stage 1. This page is for people searching BYD tuning file service: not a marketplace with fifty sellers, a small desk that writes the file on your read. Japanese and Korean dumps are usually tidy. We still want the original read — a 2.0 turbo from one year is not the next year’s file. If you landed here from Google on “BYD remap” or “BYD chiptuning files”, the path is: free account, credits, original dump, delivery in the portal.
BYD engines we actually see
In the queue, BYD most often arrives as Atto, Seal, Han. That is not a brochure list — it is the dumps that show up in a normal month. Atto is the volume ticket. Seal sits right behind it, usually from shops that already did a Stage 1 and now want something else. Han is rarer, so the dump matters more, not less. If your engine is not on the list we can still write it: put the code, year and software in the notes. Flashing a Atto file onto different hardware is how Monday starts badly.
Usual BYD jobs
On BYD we are asked most for Special request. Special request is usually the first ticket: stock car, original dump, delivery same day on stock Stage 1. Special request comes when hardware is already changed or the shop is building for track use. Special request stays motorsport if it is DPF, EGR, AdBlue or pops. We do not homologate cars for the public road. Credits sit in the account until you open a job. They do not expire.
How to send the original BYD map
Free account, credits in the portal, then the original dump on Dropbox, Google Drive or MEGA — 5 MB max, share link on the request. We do not host the file on this site. The engineer writes on that read and sends the tuned file back the same way. If you want stock later, keep the original dump or order the original-file service. Cheaper than hunting a USB stick from 2019. On BYD an incomplete read (missing areas, missing immobiliser when it is needed) is a question, not a lucky flash.
Stage 1 and Stage 2 on BYD
Stage 1 on BYD means series hardware: same turbo, same exhaust, more usable torque in the mid-range. On Atto that is the brief we get from workshops. Stage 2 is when the intake, downpipe or intercooler is already there — write that in the notes, we will not guess. Stage 3 is a conversation, not a button. The TCU, when it matters, sits on its own line so the gearbox keeps up with the engine. Option files stay circuit, off-road and motorsport.
What to put on a BYD ticket
Besides the dump we want: exact model, year, Atto or the engine code, gearbox (manual / DSG / ZF / PDK if you know it), and whether the car is already on a previous map. If you are ordering Special request, list the hardware. If it tows, sits in traffic or goes to a track on Saturday, write that too. Tuners who write BYD for customers, not for Instagram land here so they stop guessing. An empty BYD ticket means questions before we write, not a file sent “to see”.
Common mistakes on BYD
The expensive one we still see: ordering Stage 2 without the downpipe, intake or intercooler in the notes. Second: a partial read flashed over software we have not seen. Third: a BYD tuning file service copied off a group — someone else’s calibration, immobiliser and options from another car. That is why this page is built around the brand name. Someone looking for BYD Stage 1 or BYD DPF off should land on a desk that writes the ECU in front of them, not a generic label.
Why a file written on your BYD dump
A BYD tuning file service found in a group chat is someone else’s calibration. The software version, immobiliser, gearbox and options in your car are not in that file. On BYD, Atto from one year is not Seal from another, even when the brochure looks the same. We ask for the original read. We write on it. We send it back on the same channel. If you want stock, you have it. If you want a revision, you ask on the job. Credits equal euro. No subscription.
After the BYD file is ready
The engineer puts the tuned link in the portal. You download, flash with your tool, come back if something does not sit right. Revisions on the same read stay on the job, not as a new order from nowhere. If you change hardware after delivery — downpipe, turbo, gearbox — open a new ticket and say what changed. A BYD file is not eternal: it is the map on the dump you sent that day.
Who the BYD tuning file service page is for
For tuners who write BYD for customers, not for Instagram. For someone who wants Special request on Atto without a story. For shops that keep credits in the wallet and send dumps when the customer is on the ramp. We do not sell homologation and we do not promise dyno numbers. We write circuit / motorsport files. If that is your brief on BYD, open an account, buy credits, send the read.
Usual orders
Special request
Files are for circuit and motorsport. Not a street homologation. Credits in the account, original dump on Dropbox, Drive or MEGA.