Hi Guys,

I have a couple of queries for the experienced V-tuners, the guys that have been there done that.

I would like to know what range of VE table cell data you consider the tipping point before you actually amend the offensive cell. I know that maxed out cells typically display 127% and must be adjusted, but is there a range of say 115-120% that you consider as the range before you act? what are your reasons?

From what I have read so far, the prefered method is to adjust the engine capacity through the constants tables, but there are also other tables to be considered for review and adjustment, what are the obvious ones? and what are you looking for to make those changes?

I also read that the EGR tables have a direct impact on VE tables, specifically below the MAP 60kPa range, I see from the tables that the influencing variables are RPM and Mult?  could some one clarify Mult and explain how the process does influence the VE table cells? I sense that EGR (Exhaust Gas Recirculation) involves waste gas velocities, I just dont see the correlation between Mult,the values given under this heading in relation to VE cell values.

last but not least!   Knock , an important subject that I consider must be fully understood, especially if one is to tinker with V-tuning. 

I read with interest from various sources that Knock actually happens prior to the sounding you sense from the labouring engine, by the way I have not experienced this sound so I am ignorant by default, happy not having an engine knocked but emotionally poor for lack of experience . So once again I read that when Knock is detected you retard spark timing. 

Therefore my question is what V-tune data tables alert you to knock?

Guys I will extend my thanks and appreciation to all who contribute in advance, cheers,  Paul.

EGR is Exhaust Gas Reverberation.( Although I Stand to be corrected).... Now you are getting into areas that are a bit beyond me atm. As far as VE values. If you think that you are going max out the Ve tables in areas you should alter your cc in the file before loading it to the bike. Most of the files are set at 96.7 ci.

That's what I thought as well Aussie, but I saw on a US forum that the EGR effect on the HD motors is to do with timing of the exhaust valve closing and the Inlet valve opening. Something to do with drawing the Spent gases back into the cylinder before it has completed it's stroke and the valve closes. This reduces the amount of clean combustible material that is drawn into the cylinder thus reducing the effectiveness of the motor. Something like that anyway. It gave detailed explanation. I think Steve explained it on here as well. A little while after the TTS Mod came out with the EGR tables.