Thread: Optimal VVL kick-over point

...my setup liked the in/ex points to be 500 hundred rpm apart.

my car likes 5200 as well, 5400 seemed like it was goin flat then boom it would pull
@ 5200 its a smooth transition an pulls hard to 8000

I have free dyno time whenever I want since I was the previous owner of a local dyno and I've tried tunning the switch point at diferent rpm but got the best results at 4900rpm. it is true that if you switch it higher the change will be more abrubt and you will "feel" that more power kicked in but you will have the same power at those rpms if you switch earlier.

for example if I set my switch point at 5600 I'll just en up having less power from 4900-5600 and from then up the same.. just try to find the a low switch point without a dip.. niether way affects my power up top

But what cams are you guys running. I'm running Franklin cams, not OEM N1's

As each setup is different, the only way to find out what suits yours best is to dyno it.

Stock or with n1's?

+1 always dyno. specially with agressive cams

mine runs n1''s cams, thottle & IM

i ran 4800 stock, 4600 seemed to low, switched to n1's an set them to 5200 an it was good, tryed 5400 an 5600 but it just seemed like it took forever for vvl to hit then when it did it was abrubt so i backed it down to 5200

Tuning it on the street is very simple.

Start low, move it up until you cannot notice a difference in acceleration rate when the cams switch. This will provide optimal acceleration possible without a dyno tune.

I did it this way and literally we were unable to get a smoother curve with dyno tuning.


Dudeman

yep same here, when i went to the dyno it was spot on, when i moved it it dipped

(that was with stock cams tho)