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Old 10-02-2019, 12:03 PM   #1
EJSS
 
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HP Tuners VVE tables

Been a while since I messed with hp tuners. In order to tune the VE coefficients, you used to have to use a 3rd party tool to create a table, then modify the table, then export the table values back into coefficient form. I've heard that new versions of hp tuners can handle all of this so that 3rd party tools are no longer required? Is this true? If so, does it require a custom OS and/or credits to use this feature? Sorry if this was already asked, for some reason the search feature is not working on my phone and google searches didnt return exactly the answers I'm looking for.
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Old 10-02-2019, 02:29 PM   #2
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Yes, that's true.
No custom OS, no extra creds, etc.
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Old 10-02-2019, 03:03 PM   #3
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Awesome, thanks!
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Old 10-02-2019, 04:41 PM   #4
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Quote:
Originally Posted by granatl View Post
Yes, that's true.
No custom OS, no extra creds, etc.
Sort of. You can apply the Speed Density Air Mode patch and have VE tables easy to edit versus using the VVE (virtual) tuning method. I think it's much easier that way. You'd have to do a Full Write to apply that updated OS to the vehicle to take full effect.
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Old 10-02-2019, 06:22 PM   #5
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Quote:
Originally Posted by dreksnot View Post
Sort of. You can apply the Speed Density Air Mode patch and have VE tables easy to edit versus using the VVE (virtual) tuning method. I think it's much easier that way. You'd have to do a Full Write to apply that updated OS to the vehicle to take full effect.
Hmm. I'm not familiar with what the virtual is, I'll have to do a little research to catch up I guess. Is that what granatl is talking about in the reply above?

Btw, your car looks sick man. Twin turbo 427? Jeez dude you might as well go all the way and put rocket thrusters on it.
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Old 10-03-2019, 10:46 AM   #6
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Some engineer realized that using some values and a formula describe most VE layouts. So the VVE runs a best fit algorithm against the (temp) VE table that you're editing, calculating the "few" values it needs.

Contrary to Dreksnot, I prefer VVE. Basically, you put the car in MAF-only mode and then log the GMVE (I think that's it). Copy the output back to the VVE table, extrapolate, interpolate, smooth, etc and you're assured to have numbers in line with the MAF values. Depending on the range, the ECM likes to do a checks-and-balances between VVE & MAF. Stock favors VVE for low RPM, quick transitions and MAF for high RPM.
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Old 10-03-2019, 01:23 PM   #7
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Dreksnot is talking about an actual change to run a regular VE table, rather than the VVE. Granatl is suggesting using what HPT has built in - the ability to edit the co-efficients using the built in VVE tool. It's very easy to use the built in VVE editing tool IMO.

I definitely find the engine responds better with dynamic (both MAF and SD) air dialed in. For sure those low RPM transients are better handled, a blip from idle with a big cam motor like mine definitely works better with dynamic enabled and setup.
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Old 10-03-2019, 06:19 PM   #8
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Ok I get it now, makes sense why they call it "virtual" VE tables since they are only a tool that is used to create the coefficients. Thank you guys for explaining. I will most likely go this route for starters.
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Old 10-16-2019, 05:24 PM   #9
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Since Version 3.0 was released, tuning the VVE tables are a lot easier. Just remember to adjust both the open AND closed loop tables.
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