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The mkiv Supra Owners Club

Vvti running too rich


Rywalls

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Agreed! my J spec made 368 BHP at BPU, but as I mentioned my fuelling was pretty rich, so I am sure a bit of power was being lost because of it, personally I can see your point, as leaving it that rich for long periods will contaminate the oil eventually, I would go for something like the Greddy EMU and have it tweaked for the time being, for piece of mind, however it does add to the complications,

I cant remember what the issues are (if any) with the VVTI and EMU, but I am sure somebody will chime in regarding that, but I would imagine its down to wanting to control the VVTI with it, although I don't see a problem as it was intended to handle Vtech.

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Agreed! my J spec made 368 BHP at BPU, but as I mentioned my fuelling was pretty rich, so I am sure a bit of power was being lost because of it, personally I can see your point, as leaving it that rich for long periods will contaminate the oil eventually, I would go for something like the Greddy EMU and have it tweaked for the time being, for piece of mind, however it does add to the complications,

I cant remember what the issues are (if any) with the VVTI and EMU, but I am sure somebody will chime in regarding that, but I would imagine its down to wanting to control the VVTI with it, although I don't see a problem as it was intended to handle Vtech.

Yeah mate exactly. I know whifbitz sell the aem fic 6 which works with vvti and vtec etc so it may be worth using that for now until i go single. I'll stick the wideband afr gauge in and fit the recirc kit on the bov and go from there. Clutch has started slipping now too I need a win on the lottery!

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I have a hks fcon for a vvti i'm looking to sell if your interested?

Ah cool, I know you say it's for vvti but is that the piggy back unit or is there something else I'll need to go with it to work with the vvti cam? Fancy pm'ing me a price mate?

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FIC6 has one draw back IMO, it has no ignition timing advance, only retard, so has to have the timing advanced globally and retarded at the unit, which to me is not ideal, but that's a personal opinion, although the Fcon is a stand alone, it requires either an HKS licensed tuner, or pirated software if you can find it.

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Thanks for pointing that out tricky Ricky I never noticed that!

 

Canny cheap that, you had it fitted and working mate? Does any one know where I can get a harness that would work with the f-con and who would be able to map it?

 

Once again cheers for all the help and info guys there are alot of good people on here

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