Does VTEC hit harder if set higher, or does it not effect it's performance and would be better off set at a lower RPM?. I seen alot of these companys that tune them for higher redline, but lower VTEC activation point?, but from me and my friends point of view we seem to notice his b16 hit harder at a higher point, but of course if it's set too high you don't get the full value of it, but set too low and it feels off or sluggish correct?, or no?.

You guys give me your opinion, because im still not sure where to get mine set at, or understand if setting it as low as 4400 would even be a good idea or not.

 

i think at a higher rpm it is just louder,not harder.

 

Well does it matter, or does it not matter because if it's set too low then it would be weak wouldn't it?.

 

you can tweak vtec to get mild mid rpm gains, but too low you get a dip in power and too high, you get a lull, then vtec hits, and it seems harder, but really its the same, just feels that way cuz the small cam started to fall off, instead of a smoothe transition

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Garage 808 Hatch &raquo;</TD></TR><TR><TD CLASS="quote">you can tweak vtec to get mild mid rpm gains, but too low you get a dip in power and too high, you get a lull, then vtec hits, and it seems harder, but really its the same, just feels that way cuz the small cam started to fall off, instead of a smoothe transition</TD></TR></TABLE>
very well put...
the effect of vtec Xover is much more apparent in larger aftermarket cams with adjustable cam gears...notice how big cams will raise ur Xover much higher than stock..the reason being the larger cams with their higher valve lift require a higher intake air velocity to smoothly transition over...if its too low there will not be enough pressure to fill the cylinder with enough air and there will be a dip in power until it builds up high enough...once u find a suitale rpm for the Xover,then you can fine tune the Xover and see if you make any gains... i doubt you will make any more power up top, but like Garage 808 Hatch said before you might see minimal gains in the midrange

 

Hmm thanks for the info guys, but i was thinkin somewhere along the lines of type r cams for a decent cam upgrade for now from those old obd0 b16a cams being the weakest.

 

as for setting up your vtec engagement point, I recently read somewhere, I forgot where it was though, I think a magazine. That you tune your fuel maps without any vtec, and then you tune it while running on vtec, say engaging at 2000 rpm, then you compare the 2 maps, and wherever the vtec map and the non-vtec map cross paths, that's where you set your vtec engagement point, therefore having a smooth power curve. I dont know if that's true or not, but it definately makes sense to me.