峠
03:12 AM · MOUNTAIN PASS · 6 °C
For most people, tuning is
a learning cliff.
Not anymore.
チューニング
Corner 01 · Parity

Everything TunerStudio does.

One native parser for the same INI spec. The ECU's own menus, dialogs and units come from the file, never from a guess.

speeduino.ini


      
      

        
Speeduino
Dedicated support

        
rusEFI
Dedicated support

        
epicEFI
Dedicated support

        
MegaSquirt
Dedicated support

      

      
Lua scripting for rusEFI: next up

    


    
    

      

        
Corner 02 · In-context tuning 

        
A tuning engine that knows your car.

        
Your engine, turbo, injectors and pump shape every table. Each cell sits in a real operating region, and every suggestion says why.

        
2.0 L I4 turbo1.2 bar1000 cc/minrevs to 7,500

      

      

        
Ignition Advance Table · deg

        

      

      

        
Recommendation · Major

        
Timing peaks where VE peaks

        
Peak torque at 4,000–4,500 rpm is where knock margin is thinnest. Pull 2° from these cells.

      

      
Works with you, not against you.

    


    
    

      

        
Corner 03 · Spotter 

        
A Spotter on every corner.

        
Spotter checks every change against your engine and what the ECU can store. Go, caution or no-go, before you drive hard.

      

      

        
Tune check
No-go

        
Not ready: 4 problems need fixing before driving hard.

        
Not storable
VE Table: 5 stored values the ECU can't hold
✓

        
Major
Ignition Advance: Full-load timing above a plausible knock limit
✓

        
Major
Ignition Advance: Timing rises with load
✓

        
Warning
AFR Target: A stored value past a declared limit
✓

        
Safety stop
Autotune: Lean under load. Changes held, nothing written.
‖

      

    


    
    

      

        
Corner 04 · Log coverage 

        
See what your logs actually prove.

        
Every cell your drive visited lights up. Cells it never reached stay marked unknown, and autotune only touches what was measured.

        

          
0%
Coverage

          
0
Samples

        

      

      

        
VE Table · log coverage · kPa × rpm

        

        
5002,0003,5005,0006,5007,500 rpm

        
No data Few samples Many

      

    


    
    

      

        
Corner 05 · Log analytics 

        
Stop reading logs line by line.

        
Mixture error is shaded where it happens and split by operating region. The measured idle is found for you.

      

      

        
AFR · measured vs target · third-gear pull

        
      

      

        
Idle
870
rpm measured at 38 kPa

        
Cruise
2.1%
lean of target

        
Full load
0.4%
on target

        
Boost
3.2%
rich of target

      

    


    
    

      

        
Corner 06 · Telemetry 

        
Stream your pull live on OnlyTurboFans.

        
Real telemetry, not a screen recording. RPM, boost, AFR and timing, live to anyone watching, no project needed.

      

      

        
Live now

        
touge_ren
2.0T · night hill runs
LIVE

        
kei.13b
Rotary · dyno day
LIVE

        
sato_k20
K20 · track practice
LIVE

      

      

        
touge_ren
2.0T · night hill runs · Live
1,204
watching

        

          
RPM
0

          
Boost
0bar

          
AFR
0

          
Advance
0deg

        

      

    


    
    

      

        
Corner 07 · Parts library 

        
Pick real parts. Get real limits.

        
Engines, turbos, injectors and pumps from the vehicle and component library. Specs are copied into your project, so a catalog change never moves your tune.

      

      

        
Engine
2.0 L I4
86.0 × 86.0 mm · CR 9.0:1
Redline 7,500 rpm
In project

        
Turbo
0.63 A/R
Rated to 1.4 bar
Full spool ≈ 3,400 rpm
In project

        
Injectors
1000 cc/min
Rated at 3.0 bar
Dead time 0.92 ms @ 14 V
In project

        
Fuel pump
255 L/h
At 4.0 bar
E85 compatible
In project

      

      
Derived limit · injector duty at 7,500 rpm, 1.2 bar
48%

    


    
    

      

        
Corner 08 · Community 

        
An open garage of tunes, logs and projects.

        
Publish a tune, share the logs behind it, learn from someone else's build. Any shared tune downloads as a TunerStudio MSQ.

      

      

        
SR20DET
Street, 1.0 bar, 98 RON
by nori_s14
Tune14 logsMSQ
0 downloads

        
4G63
E85, 1.6 bar, time attack
by lancer_mika
ProjectTuneMSQ
0 downloads

        
B18C
NA, individual throttles
by vtec_yuki
Tune6 logsMSQ
0 downloads

        
1JZ-GTE
Drift, 1.3 bar, pump gas
by chaser_ko
Project22 logsMSQ
0 downloads

        
K20A
NA, 8,600 rpm limiter
by sato_k20
Tune9 logsMSQ
0 downloads

        
13B-REW
Single turbo, 1.1 bar
by kei.13b
ProjectLogsMSQ
0 downloads

      

    


    
    

      

        
The learning cliff

        
is now an open road.

        
Safe tuning for everyone. One platform where tuners build, share and drive together.

      

      

        
efi2000

        
        
Let's drive together

      

    


    

      
efi2000

      
LAP 0:00.00

    

    

    

  


  

  

    
    

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efi2000 · Midnight Run. A 67-second tour of the platform. Turn the sound on for the eurobeat, and click the course map to jump to a corner.