Hi,

I have a Impreza GT with a 2003 STI JDM Engine (twin scroll turbo)
All sensors, ecu, are from the JDM engine, the MAF is a WRX oem subaru parts.
I live in France so the fuel is 98RON.
With the stock boost (1.2bar) there is some fuelcut from 2800rpm to redline.
With 0.6bar, no fuel cut.
More boost more fuelcut....
The ECU is a stock STI8 JDM.
The engine is stock, just a 60mm exhaust and an Apexi intake and an AVC-R but i keep the cat and a Walbro fuel pump.
There is many reasons for thoses fuelcut: vacum leak, too much fuel (i have the stock STI fuel regulator), MAF error (is the STI8 is the same as the WRX one), knock sensor defective....
Here is the link of my log, you can seen the cut at 491310 (time ms)
http://sbrucker.free.fr/log/fuelcut.csv
For information, when i set 1.1bar on AVC-R, the Techedge tell me 9.8:1 - 10.0:1 airfuel ratio. I think it's a bit bich but i don't know how it is on other JDM STI's.
Look at the correction knock, there is never any negative correction.

Thanks for your help.