Air fuel code for scangauge

Jordo!

^^^ thanks for that.

It depnds on the application -- richer (say mid 11's to mid 12's) is usally a bit better for FI (especially if nonintercooled or intercooling isn't optimal or only lower octane fuels are available...), but really it all has to determined empirically on the dyno.

Just took a gander ant the UpRev site -- looks like they offer full datalogging (cipher) and have full control over all the maps... but I couldn't find confirmation that they can tune VVEL.

Is it really true that even the uprev software can't tune VVEL on our car??? That seems like a huge tuning limitation if true

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Modshack

No problem...My turbo cars run from 10.8 to 11.5 under boost. Forced induction always requires more fuel as it is used to cool the charge and reduce potential for detonation..
I make a boost controller for Audi's that lets the cars boost safely to 24psi with a chipped program enhancing the fuel and timing. Without the chip, 18psi is about max...

On the VVEL tuning I could see a lot of guys really screwing up their cars. Be careful what you wish for....

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Jordo!

10.8! IMO, that's a tad rich unless you are stuck with 91 AKI (or maybe a little too high a CR on the pistons...). Were you getting det leaner than that?

Eh... I'm used to tuning VVTLi on my old 2ZZ S/C'd Celica... (with TWO piggybacks working in tandem no less!).

Having more lift points to play with sounds like a bit of a PITA, but as long as one can see the OEM map as a base, on the dyno it shouldn't take too long to determine whether adjustments improve things or not

It's just the intake cam that gets adjusted, right? Not both intake and exhaust -- or are both adjustable? (Okay, that would take a little more time to get right...)

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Modshack

Ah, but remember....24psi. Not so rich when dealing with those pressures!

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Jordo!

Well, fair enough -- epecially if this was a general tune intended to provide an extra margin of safety for folks who wouldn't be tweaking things on their own

What CR were you working with?

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Modshack

Stock Audi 225's run 9.5:1. on the 1.8T motor. Stock boost was 14 psi..

Audi/VW programming (Motronic)is a bit more complex and Detailed tweeking software is not generally available...We have to work around available chip programs (now flash programs)

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1slow370

just picked one of these up and and screwed around setting it up, and was gonna post how i did it then searched and now i'm pissed there was a guide. I think the best thing about this is that the front o2 sensors on our cars come from the factory as 5 volt lambda sensors so it should be fairly accurate. anybody know if you can datalog from a scan guage?

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