VTC for cruising (columns 2 - 7 and 1500 - 4500 rpm)

[mkulak]

I'm in the process of tuning my own personal Kpro'd car and getting it ready for my Ontario Canada Emissions test. When reading the Kpro instructions it mentions that a VTC of 30 is great for the cruise RPM and columns.

Kpro Instructions

At cruising rpm and load (columns 2 - 7 and 1500 - 4500 rpm) set the cam angle to around 30 degrees. The EGR effect of the extra camshaft overlap will reduce emissions and improve fuel economy at cruise.

Flashpro Instructions

At cruising rpm and load (columns 2 - 7 and 1500 - 4500 rpm) set the cam angle between 15 and 30 degrees.

I'm running a K24a2 and noticed that the base maps for the TSX have a VTC of 10 for the cruising RPMS. Plus I still only have the 25 degree VTC gear so 30 is out of the question :)

I have tuned the A/F at 10, 20 and 25 VTC in columns 2 - 7 and 1500 - 4500 rpm and was wondering what is recommended for both emissions and fuel economy. I've currently got it set at 18 vtc, but would like to get a little advice before you e-test.

Thanks, Marc[/quote]

[Hondata]

It varies with each engine combination, especially the camshaft and exhaust system.

With the vehicle I used for fuel economy testing I found that 10-50 would work:


I'd recommend using 15-25 degrees to start with.