KennyJ Posted March 26, 2022 Report Share Posted March 26, 2022 Hi all, i have tuned some nissan vct engines in the past cam solenoid triggered by rpm and tps not only on rpm as it was floating in the rpm range as it was "to effcient" ---so i added tps by doing that i created another problem : when having higher idle in coldstart it would go extremely rich as the rpm's were up , it was in the cells where vct normally is active resulting in a rich mixture so the i altered the warmup table by solenoid state(on/off) vs ect temp. that worked i later added idle ignition timing as it sometimes still needed -12 degree to settle down on idle. not long ago i saw a video of a honda guy with a link , those guys have 2 seperate tables(vtec on/off) for fuel and spark would i be able to set it up like that on a nissan engine ? or why is that a bad idea Quote Link to comment Share on other sites More sharing options...
KennyJ Posted April 14, 2022 Author Report Share Posted April 14, 2022 can i just trigger secondairy ign and fuel tables on the VCT activation output ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 14, 2022 Report Share Posted April 14, 2022 Sorry I missed your original post. Yes you can use the dual fuel and dual ignition tables and switch between using the VTC status if you wish. Having said that, I have never needed 2 tables with the VTC Nissans (SR & RB) as the difference is usually pretty small and you can take care of it well enough with a single map. I usually dont engage VTC until around 1800-2000 so cold start wouldnt reach that area of the map. Quote Link to comment Share on other sites More sharing options...
KennyJ Posted April 21, 2022 Author Report Share Posted April 21, 2022 allright thanks for confirming! Quote Link to comment Share on other sites More sharing options...
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