rcchang

anybody got their car dyno-ed with vafc installed?
what's the optimal setup?
I just lowered the vtec engagement point.

I did 140+mph yesterday!!!
I was going down on 5 freeway at 3 am yesterday. This stupid integra ...I don't know what he was thinking... It was fixed up pretty good but still...
anyways, came right next to me and tried to hit me up!!!
so i down shifted to third at 75mph...and went for it....
the rest... at 100 i think i was couple of car length ahead...
i was thinking ...what the heck...might was well test my car's limit... i kept on going without caring about the other guy...
it went pretty quick... setting the vtec at 4000 made the difference ....i think ...to me at least.... before when i tried i was stuck at 120.....soooo slow...
but at 140 and still going.....i thought maybe i should stop here...
i realized ....a curve approaching pretty fast....at 140mph...
i slow down....and i saw a fixed up v6 accord and slowed down right next to him...and this time i tried to hit him up...
but he wouldn't go... he saw me from way far....approaching sooo fast... maybe got scared?
well...that pretty much covers it!!!

bdimc2001

damn...i'm glad your out in LA...don't kill me buddy...

lilboykorea

whoa cool...wahts the top speed the guage has? 140s fast...

Shoofin

Be careful, dude..
Ed

astro

this is my dyno, with headers, V-AFC, CAI and V-AFC pro tuned with a lamda meter...


this is on my CL-S btw...

TLover8888

a member on this forum had his VTEC engagement set to 3800 RPM's with the apexi vafc installed

astro

When I had my car tuned, we found that advancing the VTEC did bring the power up a bit earlier, but it also made the line a lot less smooth...we opted for smooth and set it at the stock setting of 4800...

Lawaia

Yup....exactly!

jkc2121

when i set mine at 4800 it is not smooth at all. it is exremely slow until the 4800 then it jumps.

vr-tls

what is the lowest vtec engagement point you can set??

Nate

You can set it to 3000 if you wish. Mine is at 3800.

edgalang

I would agree with nate on this one "IF" I have the controller. I'd set the vtech to turn on when the butterfly vavle opens up which is 3800. I dont know why you'd want to be adding in more fuel without the proper air mixture by setting it below the butterfly vavle value.

TLTypeS

is the v-afc that useful? , i have been able to hit 144-146 a few times with only H/I/E.

edgalang

They aren't saying you wont hit that speed without it. It's just that you will get there faster because it would help out when shifting from 3rd gear to 4th.

TypeSDragon

How much for the unit and installed??

catcherr

I would imegine that redline in 3rd would bring you to more than 3800 rpm. probably above 4800rpm so that it would stay on the boil.
Engagaing the vtec lower will not usually give more power. The cams profile are useless at low rpm due to the lack or air flow and velocity of said air flow. Take a regular car (say a VW Golf) and add big cams that have long duration and big lift. At low rpm they are not making more power (probably less) but when you get "on the cam" you feel a distinct pull. Just like vtec. Good power and torque down low and better top end when the cam switches profiles.

oO_dC_Oo

I got the VAFC for 340 shipped, and not to sure about installation still gotta go and do that.
dan

TLTypeS

oh .... got it

edgalang

When you verify for sure, then maybe your post could receive more credit. The stock Vtech settings do not turn on @ 3800 but the butterfly vavle does. If the tach could stay above the 4800 mark from shifting to 4th from 3rd then why bother with the vtech controller in the first place?

catcherr

My post simply said that adjusting the vtec point lower will not make your beloved TL faster. What did you not understand?