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Showing results for tags 'toshi'.
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Advice Please - Injectors and Tune Issue Hey guys. I've been getting parts together for a couple months and finally installed them into my R33. I got the following installed: -Hypergear G3 21U high flow - z32 AFM and stainless intake pipe - Walbro 255lph fuel pump - 550cc Injectors (STI side feeds, part # 16600-AA170 with harnesses) - Nistune ECU - 3in turbo-back stainless exhaust and Blitz FMIC already installed Along with the parts I also did all the maintenance items, got new NGK coppers gapped to 8mm, new fuel filter etc etc. However, when I got Toshi to try and tune my car, he claimed that the AFRs were being whack and it was misfiring at 5k rpm. I immediately thought of coils and I also didn't do the earthing mod for the fuel pump, so this might have been my issue. I ended up buying Yellow Jacket coils packs and I also earthed the fuel pump and checked to ensure full voltage. The car started fine, test drive fine low revs, etc. However, again getting Toshi to try and tune and check AFRs etc and we still can't run boost into it as he claims the AFRs are still unstable. He now says it's the Injectors but I don't know if I believe that as when we're in the "base" tune he did, the car isles fine, revs fine etc albeit a bit rich. In short, 2 questions: 1. I know there are better options, but how likely is it these Injectors are actually the issue? They're not high flowed, but genuine STI Injectors. Anyone else run these? I can send back under warranty if needed. 2. How likely is it that the tune is the issue? I read another thread on here where someone had a problem with a Toshi tune that came down to injector latency being set wrong and another tuner fixed it. I really feel feel like after all the work done, and the fact that a rich tune revs fine but another tune doesn't makes me think it's the tune? Anyway, I currently am advised by Toshi not to boost the car as the AFRs are off and he wants me to replace Injectors and go back to him. I just want other opinions. Sorry for essay. Thanks in advance.