VAFC II Full Installation Info
#31
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Rep Power: 0 but what i'm saying is i can notice more now than before when i had it set to factory settings. Plus i don't think i have the same setup as the majority of people on here... not that i'm saying i better in anyway. i just notice a lot of people have the same thing, if they have anything done to their engine at all. anyway, i really need to hit up a dyno so i can see what's going on at the wheels. Back in Feb. when i had just the CAI and the flowmaster muffler i had 117.8 at the wheels. after everything i've done i really am interested in seeing if i'm up at 127 or 128 whp. what do you guys think after looking at my mods.
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Rep Power: 0 the vtec engagement point was set to passive mode, which to my knowledge is when the ecu senses the correct oil pressure it engages the vtec. I don't think that i lost any low end power at all actually. I've been able to race an integra with a CAI and exhaust and keep up even with him. ...i don't know .... input?
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Originally Posted by Exit91Civic
but what i'm saying is i can notice more now than before when i had it set to factory settings. Plus i don't think i have the same setup as the majority of people on here... not that i'm saying i better in anyway. i just notice a lot of people have the same thing, if they have anything done to their engine at all. anyway, i really need to hit up a dyno so i can see what's going on at the wheels. Back in Feb. when i had just the CAI and the flowmaster muffler i had 117.8 at the wheels. after everything i've done i really am interested in seeing if i'm up at 127 or 128 whp. what do you guys think after looking at my mods.
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Rep Power: 0 my mods are in my profile. now the one thing that am questioning someone else is if i put an STR Fuel Rail in and the RSX 320cc injectors in if it would make any difference without being boosted. i'm not looking to get into a fight....just looking for input. you do have to agree though 9 times out of 10 there are more people that when you look at their profile for mods they only have show... and 'no go'.
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Originally Posted by Exit91Civic
but what i'm saying is i can notice more now than before when i had it set to factory settings. Plus i don't think i have the same setup as the majority of people on here... not that i'm saying i better in anyway. i just notice a lot of people have the same thing, if they have anything done to their engine at all. anyway, i really need to hit up a dyno so i can see what's going on at the wheels. Back in Feb. when i had just the CAI and the flowmaster muffler i had 117.8 at the wheels. after everything i've done i really am interested in seeing if i'm up at 127 or 128 whp. what do you guys think after looking at my mods.
I went to dyno, set vtec engagement at 4k, then the dyno curve run FLAT(zero hp rise) from 3000 to 4000.
If you can make 117.8(I can only make 122.1 when I remove PS with 2 deg retard), then post your settings.....It'll be nice to try it
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Rep Power: 0 well i'll have to go and look at the settings and write them down for yah. I actually got them off here (but i couldn't tell you where). I have my dyno sheet posted in my 'gallery' if you'd like to see it. Like I said that was when I had a CAI and Flowmaster Muffler, NOTHING else. I expect the header and downpipe to give me more top end, which is where my peak WHP was anyway. I have to call them to make an appointment to get dyno'd again, especially now that I have the VAFC.
Anyway, I'm going to hook up the TDC wire soon and see if there is a difference or if it ruins my performance. I doubt it will ruin it, but you never know!
Anyway, I'm going to hook up the TDC wire soon and see if there is a difference or if it ruins my performance. I doubt it will ruin it, but you never know!
#37
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Rep Power: 0 i heard on the forum some were that when you connect the T.D.C wire the engine starts to act funny.. never did it myself. I have the VafcII kick my vtec in around 4.5K and its cherping 3rd. only mods i have on my are ; are injen short ram, d.c sport headers. and the apexi. but for some reason its stronger than most Ex's i've raced that were moded out and i've taken 3 SI's (trust me i have 12 whitnesses) even my buddie who sold me the apexi said my engine is louder and more torqueyer than his 03 was.and i dont even have a full exahust on it ..im putting it on a dyno next week..so i guess well see whats goin on
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Originally Posted by Exit91Civic
well i'll have to go and look at the settings and write them down for yah. I actually got them off here (but i couldn't tell you where). I have my dyno sheet posted in my 'gallery' if you'd like to see it. Like I said that was when I had a CAI and Flowmaster Muffler, NOTHING else. I expect the header and downpipe to give me more top end, which is where my peak WHP was anyway. I have to call them to make an appointment to get dyno'd again, especially now that I have the VAFC.
Anyway, I'm going to hook up the TDC wire soon and see if there is a difference or if it ruins my performance. I doubt it will ruin it, but you never know!
Anyway, I'm going to hook up the TDC wire soon and see if there is a difference or if it ruins my performance. I doubt it will ruin it, but you never know!
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Rep Power: 787 Those numbers seem kinda low. Normally I would say the intake caused the dip, but injen cai actually makes more torque in that range. Looks like it needs tuning.
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Rep Power: 0 That is my Civic's Dyno, and it's not made up at all. I have a good 15 people that can prove that. They'd all be bustin my *** about it too, because I went with a buddy of mine who went with a group of people who all had GTI's (1.8T). I honestly couldn't tell you what happened when the dip occurred. Like I said it only had the Injen CAI and the Flowmaster Exhaust. I have to call and make another appointment, I need to prove some more people wrong soon. ;-)
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Rep Power: 787 I can't strees enough how important it is to get this dyno tuned. Guessing numbers is not the way to go. Some people have ended up subtracting fuel, while others (like me) have had to add more to reach the ideal a/f ratio. If you're running too rich or too lean, you won't be making the most power, and rpms won't be smooth. There really is a noticable difference once it's tuned properly.
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Rep Power: 272 its -37 on both narrow and wideband all the way.. until it hits around 4500rpm with vtec.. then it goes to -34 cause it runs hella lean if i leave it -37 all the way across... then around 6000rom it goes to -33 again cause itstarts to run lean around there
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Rep Power: 787 I don't think it matters. Mine was hooked up when they tuned it. I doubt it would affect anything, as the only goal is to get the a/f ratio flat around 14:1
I don't think the tdc has anything to do with adding more fuel. Maybe with vtec engagement, but you shouldn't change that anyway.
I don't think the tdc has anything to do with adding more fuel. Maybe with vtec engagement, but you shouldn't change that anyway.
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Rep Power: 0 i just got off the phone with APEXi and the guy told me not to hook up the TDC or the VTC wires. He said those are only for the K series motors. He also said that if I installed it, it would set off my check engine light, is this true?
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Rep Power: 272 dont think so.. look at gearbox and me..we both did it and its fine no CEL.. we never hooked up the vtc wires anyway cause there is no wire to hook it up too... all the TDC wire does is tell the vafc2 when it hits TDC.... no biggie..just means one less wire to install.... i also called apexi before buying the vafc2 and they told me that it wasnt made for our U.S. D17 cars and isnt hasnt been officially meant to be installed on our cars... he also said thats why our chassis code isnt in the manual... but if you look at how many people is installing it then u know it works...i also called apexi to see if i can just use it as a stand alone vtec engagment cause i did a head swap so i needed something to engage the vtec... and there response was it wont function unless u have a signal being sent to the ecu to the vafc to engage it... boy did i prove them wrong...
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Rep Power: 787 Apexi doesn't know anything about our cars because technically they don't support it. So it's up to us to figure it out...just like the e-manage. I have everything installed like it says in this thread and it works great. I got it tuned and everything. Car feels nice, and there's no cel or bad things happening.
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Rep Power: 787 A few weeks after tuning on the dyno, the car is starting to feel like it did before. I can't notice a difference anymore, and the rpms aren't as smooth as they were a few days after tuning.
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Rep Power: 0 SOmeone posted that the ecu will reset itself or some shi$w like that try disconnecting the battery to reset the e.c.u
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Rep Power: 0 I have my VTEC engagement set at 3000/2800, there I feel the car runs a lot smoother, and really picks up right after 3000...At 3500 there is a dip on the cam change-over and I feel a complete null right after VTEC engages .
If my design analysis is done right, then I would say no matter what, rasing the VTEC engagement point too much will cause loss of mid-range power. So, keep it low, and make sure that you don't actually feel too much difference, as too much difference means that it runs under-powered and suddenly jump to wherever it should be.
Anyway, the temperature here now is getting cool, now 58 deg at 6pm, should be some nice day to run(also, ruin) the car ...
If my design analysis is done right, then I would say no matter what, rasing the VTEC engagement point too much will cause loss of mid-range power. So, keep it low, and make sure that you don't actually feel too much difference, as too much difference means that it runs under-powered and suddenly jump to wherever it should be.
Anyway, the temperature here now is getting cool, now 58 deg at 6pm, should be some nice day to run(also, ruin) the car ...
Last edited by 82801BA; 11-02-2004 at 06:37 PM.
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Rep Power: 0 the instructions on the VAFC2 showed that the VTC and VTM were not on the ECU diagram... i see thats it up on top so do you think i would need to wire those up or just leave it.?
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Rep Power: 787 Just do whatever this thread says at the beginning. The apexi instructions are wrong, and not installing properly will trigger a check engine light.
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Rep Power: 272 like gearbox said.. read the beginning of the thread.. i too came across the same situation a while ago which is the reason why i created this thread to help other people out..