mine was set at 5300, then when i run at the track i turn it down to 4000, but then last night i turned it to 5800 and now it fells like it pulls alot harder then at 5300...?? is cause of the b16a? - i have a gsr ecu right now(see sig)...but what do you guys have your vtec set at??

 

I don't understand why you are moving your VTEC X-over so much. Are you getting this thing on the dyno in between changes being made? I mean you don't need to play with it all that much. Just get it tuned at a certain RPM to cross over at and then you are done. No sense in trying to go lower. The dyno is your friend

 

no i went to a dyno with it set a 4700 and it added a jump in 18 ft tq and 26 HP on the dyno...but i am just playing with it..my butt dyno trying to figure out what is best...

 

my VAFC in my EM1 Si with B16 when I had it was at 5krpm crossover

 

mines at fidyfo huny

 

It doesn't pull harder, it just feels like it does. By setting the vtec higher, you get a stronger 'kick' when the vtec kicks in, that's all. You're better off setting it around 4500.

 

mines is set a 4900

 

4500 on a D16Z6

 

4600 gsr motor stock

 

b16a with bolts ons and only 130 WHP? Is that kinda low?

4500 on D16 here

 

yes that is low stock you should put down around 143. But on an old school one i'm not sure.

 

mines is set at 5200 with a P28 skunk 2 computer and it pulls like crazy

 

He's exactly right. When I initially installed mine I set mine up to around 5800 thinking that was good. It felt like a lot more power. I got the car on a dyno this year and we set the setting to 5100 and the power band became a lot more linear instead of a slow rising with a large spike. I also picked up 12bhp and 9lbs-ft from 4600 to 7000. I might try it at 4500 when I do my next dyno session.

 

different setup requires different settings. you shouldnt use other people setting for your car. the best thing to do is go to the dyno, set your x-over as low as possible and make a run, then set the x-over as high as possible and then put the two power plot on top of each other and set the x-over where the two power curve cross. this is the point where the low cam drop off in power and the high cam picks up.

 

Yea, best thing to do is get it on the dyno. That's why mine is set at 4600...Hondata tuned...pretty much a stock motor (intake/header). Don't go off the butt dyno.

 

isnt that low...yes it is VERY low - but i dynoed on a MUSTANG DYNO..thats why it says acclamied...cause it was also a AWD DYNO...and i was the first civic he had ever dynoed..so i am gettin shafted - my and my friends think once i get my ECU i will be at about 155-157 somewhere in that range...but you guys are right. i will just leave it at 5300 and be happy....

 

when you raise your vtec engagement point with the VAFC it'll kick in "harder" according to the butt dyno. however, this won't be the best way to achieve the best power curve potential. a nice flat line on a dyno sheet shows a potentially strong power curve.

lifting the vtec engagement point to make it kick in harder would create a dip in your power curve, and therefore would not be a good power curve.

gt me?

 

I left my vtec point stock. And when i had the unfortunate experience of my car being broke into, they stole it. I went out and just bought a safc, no need to change it.

 

I had my vtec x-over at 5700 on my b16. It would just bog a little if it was below 5500.

I also had ctr cams.

 

Mines at 5400 on b16 with ctr cams and basic bolt-ons.