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Originally Posted by rhynotune  I've never really seen a high HP Lightning be under 200% load. Most of the time since you scale the airmass to have the correct loads you aren't ever gonna achieve being able to correctly tune for 16 PSI and 20 PSI you know that. If your talking about bolt on pulley trucks running 4 and 6 PSI then ya your probably correct, but I tune conservative enough that I don't need to sacrifice bottom end to achieve the same ultimate result.
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I've got data to prove otherwise. I have a customer with a TT lightning that can run 12psi or 16psi and the tune is set up to adjust timing automatically, based on load.
Scaling load should not be done, if you are using a good wideband in the proper location (before cat) then your transfer function and load will be correct, once you make the actual a/f = commanded. This is tuning 101.
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Would you mind explaining how it's based on a global adder? All it is +1, +2, degrees the borderline table. Mind telling me just how much different that is then adding 1-2 degrees straight across to the borderline table? It's still based off of load and RPM... No one is going to be able tell the slight difference, and if they do, they like it over completely changing the borderline table. By doing it the global way, you maintain all of the stock timing table and transistions. It's basically a stock table with a little increase (for octane) which is the best way to do it IMO
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Once again, blanket adjustments don't work when you are dealing with heavily modified combinations. Did you know that a 4v head has different spark requirements than a 2v head.
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Again I don't think you can really tune from 16 PSI and 20 PSI and maintain all of the driveability your trying to keep. I don't know why your so hung up on drop down menus? By you own admission, you've never seen the software and you haven't used it so you don't know what in all of the functions, scalars, and tables its changing. And I mean come on, if you select 2400 it inputs the 2400 transfer function and changes everything the EXACT same way loading an SCT value file. I just think it's inaccurate to think that a drop down menu program can't make a proper tune, but loading generic files provided by SCT and mailing them out is any better.
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Once again, I have data to prove otherwise, I've done it before.
I have seen the sniper software, it was demonstrated to me by the owners of sniper.
When I tune I do not just load generic value files and go. I start from a proven file that i have used before, make changes based on mods, collect data, and actually custom tune the vehicle. Other sct dealers may be just loading value files but thats what seperates the tooners from the tuners.
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I don't think we see eye to eye on that. We know the barrel size is different obviously SCT advertises a 90MM and Sniper does not. SCT still to this day does not have the exact accurate 3000 kg/hr transfer function. Dealers are still being told to use a 2800 value file which is the same as the generic 2800 drop down menu tune SF creates. There's a huge difference in the accuracy of the two, as well, I've never gotten a flow sheet in an SCT meter.
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The SCT unit uses the same machined alum housing as the Sniper unit, and they are both made by the same company. They may have slightly different curves, but that does not mean that one is less accurate when they are made by the exact same people. LOL.
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I really just have to laugh, what exactly is it that you do that is so much different then what SF does?
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I can build a proper file from scratch for any combination. Would you know what to do if someone came to you and there was no option for a turbocharged SVT focus in the drop down menus? or no option for a 5.4 4v? There is a way to make it work, and then there is the right way to do it. When you tune the wrong way you compromise driveability and fuel economy. I do not have a problem creating a proper tune by using my own knowledge and going beyond value files and menus.
I think the biggest fallacy out there is that some people believe tuning is very simple. If that was the case more people would be doing it, and I would not be re-tuning so many vehicles.