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ddnspider ddnspider is offline
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Posts: 624
Join Date: Dec 2018
Car: q50
Default 10-02-2019, 02:36 PM

Take a look at TO INFINITI BEYOND - ANALYZING THE VR30DDTT TURBOS | STILLEN Garage

for Stillens recommendation on max boost and some comments about RPM. Plenty are going higher but at least Stillen uses sound reasoning and math behind their claims.

Your fuel wires are definitely working. Any large drops in timing (3 degrees or more except in high gear right around 5000-5200) typically indicate knock. I've seen Ecutek tunes that showed timing drops less than this, but yours increases through the pull which is good.

Sometimes dropping a couple PSI and letting the ECU add more timing can make it feel quicker.

I do recommend the BMS WMI kit as it integrates nicely with the JB4. I did an install with pics that keeps everything under the hood if you decide to look for install options.


Q50 Premium RWD
BMS JB4 w/ FW, WMI, EWG
C@less D 0wn P 1pipes, Y pipe, Mid pipe
BMS HE
Low cost LSD
Z1 billet subframe bushing collars
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