Hitachi
Hitachi Automotive Systems (now Astemo) supplies Nissan's ECMs including the VR38DETT (R35 GT-R), VQ-series, and KR20DDET. Notorious for being well-protected — GT-R community uses EcuTek, Cobb, UpRev for access.
Tune Cost
$400-1,300
Tool Cost
$250-1,500
Difficulty
advanced
Ecosystem
★★★
✓ Pros
- • Strong support in Nissan/Infiniti
- • EcuTek + UpRev mature on VQ engines
- • Cobb Accessport for newer Subaru
- • Excellent tuning headroom on VR38DETT
✗ Cons
- • Tooling expensive (EcuTek license = $1,500+)
- • Older R35 ECUs encrypted
- • JDM-only platforms have thin tuner support
- • Slow to gain support after model launch
Best For
Nissan GT-R (R35) builds350Z/370Z VQ tuningInfiniti Q50/Q60 VR30JDM Skyline tuning
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