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Good morning all, yesterday i went to get my car tuned by one of the only shops in Canberra that do Nistune and was unsuccessful. They were unable to get the AFRs to quickly drop to a safe level while boost was beginning to build without making the fuel map overall too rich. IE the map was either far too rich IE 10:1 or AFR whilst boost was building/peaked at 10psi was still 13-14:1. The shop questioned the authenticity of my AFM which i know being a z32 they're have been a lot of fakes. However I bought mine new through EFI solutions (AKA TAARKS) along with my injectors which have the counterfeit code and holographic seal etc (injecotrs that is AFM didnt). I have bought many parts from them including genuine nissan, and think they are a genuine dealer, and am hesistant to go buy another one. The tuning shop did admit it had been a while 6months since they had done a Nistune and i don't tune as many of these older basic setups like mine. I am at a bit of a loss at what to do as i dont really want to throw more money at it without knowing the problem, and would rather take my car to a tuner who is more familiar with my setup (will describe below)/ Skyline who can help diagnose and tune. My current setup is as follows: R32 Nistune ECU with latest feature pack EFI solutions Top fuel rail kit, runnig stock FPR with Bosch 0 280 157 187 495cc Injectors (off the shelf GM LSA injectors) Bosch Z32 AFM from EFIsoltuions, new in Blue Box (pic below) Hypergear G2 21U Highflow Greddy Profec OLED EBC Custom Hard intake pipe joining to stock Airbox, Return Bov GTR BOV NPC clutch SPlitfire coilpacks Standard Walbro 255 with the wiring mod. NZ EFI AFM adapter harnes Car setup history I did purchased the nistune software and cable to get running, although Matt from Nistune did set it up for my injectors and AFM. Had to increase the Kvalue by roughly 60% to get stoich AFRs at idle and light cruise. Car runs pretty well off boost but richens to at least 10:1 (minimum of my PLX wideband) when making positive pressure. I have also conducted leak test prior to tune. This morning check fuel pressure was 3bar at idle wit no vac line approx 39spi with vacc line. Looking for advice on what to next and tuners close to Canberra who being familiar with this setup can diagnose and tune without throwing a huge amount of money at it. Cheers
