That's weird mate. :? I have to admit though, I do hate having to hit 8100 to keep the engine on VTEC just above the 5400 on gearchange if I'm really in a hurry ;)
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That's weird mate. :? I have to admit though, I do hate having to hit 8100 to keep the engine on VTEC just above the 5400 on gearchange if I'm really in a hurry ;)
and now the weird part comes....
tell me how the Dyno Graph should be?..
after 7400rpm, will it haf a sharp boom? or.....??
a good tune should have no sharp jump in power. if it does it should be as less as possible.
basically when the power of cam1 is dropping off and if u have set vtec too high u will get crossover to cam2 in the middle of its power peak and get a sharp jump.
setting vtec at 7400 u will get a jump for sure :) and have power for 1 second then u'd have to change gear becasue u would be at redline by then.
Yeah sharp jumps on the standard ECU's suck... too much wheel spin in the wet... so i heard :?
usually you guys will know that Vtec kicks in....exhaust changes sound..
but for me case...it changes sound at 5000rpm, and it changes again at 7400...damn weird...don't know why...
hopefully my car doesn't cut off at 8500rpm....and hopefully it can rev till 10krpm....then i won't have such short time to enjoy my Vtec...hahaha
pglee,Quote:
Originally Posted by pgclee
exhaust changing sound is not a good indication of vtec crossover as it could have actually changed well before that point. The best method is to wire an LED to the VTEC solenoid and that way it will light up the moment vtec has crossed over. there are many articles on the net for doing this.
about it changing sound at 7400rpm I know what you are talking about, but that is not vtec changing over. I have found with the b16a (with exhaust and intake) that very high up in the RPM close to redline the engines induction noise does actually change slightly, it becomes more raspy and rough, but that definately isn't vtec cutting over again.
Chris
me engine change sound ler...
hey dude remember me with the white DC2 VTi-RQuote:
Originally Posted by LatinoHatchCrap
just a note
the B18C not R
actualli engages VTEC at 4400rpm stock
and then at 5800 the IAB/butterflies opens- dual intake runner activates and the short intake comes into play
:)
how come soo many Vtec point now??..which one is real??????
don't make me blur leh
I think I'm about to scream!!!
How about you go to a dyno and find out what is the optimal Vtec engagement point for YOUR ENGINE, with YOUR MODS! If that is what you are after.
Jeebers people..... the OEM tachos are sometimes out big time too, so don't be too dependant/reliant on them.
thank you for clearing that...
is just too many figures tat i don't know which is a Vtec point...
actually, the dyno doesn't show a significant increase of power when me-vtec kicks in...so i just wonder whats wrong thats all...
haha...giving soo much headache to you all...i feel bad...haha..
I'm no expert man but if there is no BIG kick in power at the Vtec engagment point than to me it does not necessarly mean that it is not tuned badly, given the mods I think you are running.
The way I see it it has been tuned well and in such a way that the crossover is not very noticable.
I still believe that the B16 is the vtec engine with the most noticable switch over to highcam...... probably due to extreame lack of power and torque in lowcam.
B18.. less noticable even less in K20s.......
Anyone else think the same?