Wats up fella's?

Just wanted to kno whether or not it was possible to hookup a APEXi V-AFC/S-AFC controller and getting it dyno tuned?

Is there anything about the i-vtec or anything else that will prohibit us from using it?

 

Hi! I was interested in getting those things to. The dealer told me, V-AFC will not work on i-VTEC engine... you have to get the V-AFC II... well it does not show on the website of Apexi, but if you check the Japanese version... or even search on eBay... you can find them... or find a auth dealer to order it for you.

But as far as I know... this thing will not boost up your peak HP at al, it only makes your i-VTEC kicks in earlier... as far as i know... about 500 to 1000 rpm earlier... It's just physically impossible to make it kick in too early. So you pretty much get the 200 hp earlier... That's all it does... That's why it makes me concern wether I should spend 300 bucks on it or not.

So what do you think... I heard that it dominates the original i-VTEC computer... and computer errors may messed up the mech of the engine.. so it may makes VTEC not kicking in at all if the computer errors occur... I don't know if this is true... cause I just read that on anotehr forum... and by that... dealer will not fix the computer for free... and it cost a lot to repair the engine and the computer....

Do you think it's true???

Just some thoughts to share with!

 

i think stokeless looked into the whole VAFC II thing if you want to do a search. basically there is not a compatible harness for our car?

 

i cant get the throttle input into the VAFC II to work. that drive by wire thing is screwing me up so i gave up and am just waiting for either a diagram or a KPRO from hondata to come out...until then im done cutting up my wiring harness its a biatch to get to i hate messin with it.

 

Damn..

I was hoping this would work...

On my previous v6 accord, i was able to get an extra 20whp just by tuning it.

 

I am not really sure how the whole VTEC controller work... but from the reply of the company... and Mech guy from auth dealer.... they all told me... it will not make any hp gained... it only makes VTEC kicks in earlier... I am not too sure how you made you V6 Accord gained extra 20 hp.... or maybe it's because TSX is i-VTEC.. not VTEC

 

well on my V6 accord, we actually found that if we left the vtec at its stock location (3200rpm), and just played aroudn with the air/fuel, we got the best results that way.

I had my car done by RPM*NYC, one of the best tuners in NY.

 

Where is RPM*NYC?
Is it near Long Island City? Queens Boulevard?

 

I think some people are getting confused about the VAFC and SAFC......VAFC controls VTEC engagement point (or so to say) SAFC plays with air/ fuel mixtures, which if tuned properly, WILL give you a gain in hp(20whp could be very realistic depending on other mods)....but if tuned improperly, it can help you lose a lot too.

I had the SAFC on my IS300 with intake, header, exhaust, all tuned..... I went from 179rwhp to 221 rwhp. Nice gain for IHE combo tuned if you ask me!

 

VAFC controls the air/fuel mixtures + VTEC engagement!
SAFC only controls air/fuel mixtures.

So VAFC does both actually..........

 

whew i was hoping someone would come out with the truth thanks kcnyc lol i didnt want to have to type up an essay to explain hehehe now u get to if there are questions lol

 

so what you guys are saying is that it will definitly make some hp gained if it's professiona tuned... mmm... that's weird... Did the guy from Apexi lie to me?... cause he says it only helps you reach peak hp faster... earlier...

Well I will just email again to make sure...

Anther question is... would the V-AFC II damage any part of the car?... woud it avoid the warrenty? That's the issue I worry the most. If it really does gain some good hp... and do nothing to the warrenty.... then... I will go get it right away man!

 

Put it this way, anything you do to your car will void your warranty. So basically, you just have to be careful, and know beforehand what your getting yourself into.. ya kno?

now the V-AFC II (or V-AFC I, S-AFC I or II) if you buy it brand new and install it, you shouldn't have any problems. If you buy it used from someone who already had it tuned for their specific car, and then install it, your car will run like crap, and there is a possibility you can mess up your motor (or fuel system too i think).

BUT you wont get any gains unless you get it tuned. I kno some people tune it themselves, and use their assdyno as a way to measure gains.. But thats not really a good way to get the max potential lol..

Best thing to do is to take it to a shop that has a DYNO and has experience tuning with the V-AFC or whatever you decide to use..

Hope that helps some

 

It may affect warranty depends on what you installed on your car. The VAFC requires tapping to the ECU harness like most piggy back systems. Do you think the dealer will fix any emission or engine performance problem if they see the ECU harness has been tempered with?

 

hahaha i spliced all into my harness then put it all back together lol but ill tell u what its all back to stock as afar as wiring lol but hey its ok its not all jacked up...and the guy at APEXi must have just been some new sales rep. cuz if u didnt gain power from adjusting the a/f what would be the point of having that option in the system? Tuning the a/f ratio will give you power lowering or raising the vtec switch over point changed your power curver therefore possibly getting you max power earlier but you might drop after it peaks out its all about the tuning..with out tuning you have no power. I dont care if you have a T-88 turbo with equal length tubing and the best air to air or water to air intercooler there is with out tuning you can still be slow...seen a fully built Ls/Vtec turbo...i mean built..should have run 10's but he ran mid 12's in a bubble back hatch and he got walked by a straight LS turbo....with basic mods...no rods just pistons and some in house head work.so yes tunin is where the power is...

 

Hi there..

I've installed the VAFCii on my Euro/TSX 6Spd and had it tuned on the Dyno. Ithought I post the results in here

NOTE: Torque Correction wasn't set, however you can see a substantial increase in torque.. raised a few eyebrows with the car jerking about the dyno. Also I'm from Australia and our Dyno readings are different. We do not use SAE's format

CHEERS
Nick

 

Does anyone know how to convert that to HP????

EuroAccord13-- verify that you have a CAI and Exhaust....that might be your gains right there. How many runs did you do for tuning?

 

I'm gona talk to SteVTEC see what he says about the dyno graph.
Also, EuroAccord13, what other modifications do you have done to your car? and who did the wiring for your VAFCII ?


And on a side note.. i've never seen the arctic blue pearl color look soo good

 

Baseline Power: 103.6 wkW --> 138.9 wHP
Modded Power: 112.6 wkW --> 151.0 wHP
Power Gains: 12.1 wHP

The torque (437.6 Nm / 322.7 lb-ft) is NOT comparable to US / SAE methodology. I'm pretty sure this is gear torque, not an attempt to measure engine torque. Speaking of methodology, take the power figures like a grain of salt also. Not sure what type of dyno or what sort of correction (if any) was used. What's relevant are the gains. 12 whp.

 

thank you much Steve

 

well i don't think he installed the CAI and exhaust during the dyno run. My impression is that his first run was untuned, and the subsequent run was after VAFC tuning.

 

I'm confused...at the bottom of the dyno rip it says next to the red dot... VAFC-3, Exhaust, CAI.......

Edit: At a minimum after looking at the pics again, he has an exhaust...single output at that....can't make out the engine pic well enough to see if the Intake is different

 

looks like he has a single exhaust at tht..so im assumin the VAFCII is possible on are cars..

 

Well I purchased the K&N Typhoon Intake from the USA after I saw one of the members here, JTSO who installed the CAI a few months back. I even seeked his advice on installation as I had a problem removing the resonators.

My baseline (buffer) dyno run was done with the CAI and Exhaust which made a pathetic 103Kws and then After the tuning of the VAFCii, it came to a pathetic 112Kws . I was told that my car still has some running in to do. It's got around 6000kms now, dunno what's that in miles. The Dyno used was a Dyno Dynamics. Also, Australia has crappy fuel here too .. Can't wait to go back to my home country where I get 100RON

During the dyno tuning of the VAFCii, I did about 10 runs with Kws ranging from 106 to 112 Kws..

I am also going to order a set of DC Sports extractors from the US, only concern is that it might not fit due to my car being a right hand drive but I think it shouldn't be a problem...

Anyway, here are some pics of my custom stainless steel mandrel bend MagnaFlow system and my CAI to verify my mods..

CHEERS
Nick

 

ok i have a question are you running the same engine as we are the K24A2???if not and you are running the k20 then US and Canada dont get your hopes up....the 2 engines have completely different ECU's and drive by wire is whats holding us back

 

Yup we both run the same K24 Engine, 2.4L 4 cylinder.. Yeah I'm not so happy with the response on the drive by wire they got in the car too...

 

ok this what i need from you lol i need the wiring set up how did you wire it up to work???? i need to know BADLY pm me if you need to it would greatly help me in my conquest to turbo the car....and get me some more all motor power while waiting for my turbo manifold

 

pass on the info good sir

 

My tuner spent 8 hours manually testing every single wire on the ECU of the K24A after he suspected something was wrong in the manual supplied by Honda and he wrote it all down on a huge piece of paper, I am not sure if he still has it but I'll ask from him. Something to take note of is that the wiring diagram supplied by Honda was wrong in a way that if you drive a manual TSX, refer to the diagram for the auto and if you drive an auto, don't even bother looking at the manual. I am not sure if the Australian manual is the same as the American's but it's just a note to look out for.

CHEERS
Nick

 

well i have had my APexi VAFC II for so long there wasnt a manual that had info for the TSX in it lol

 

So basically it was a 12 hp gain with the VAFC being tuned....not a bad mod to invest in...the VAFC costs less than 300, correct?

Now all we need is a wiring diagram

 

My VAFCii cost 500 Australian Dollars.. going by current exchange rates.. it's around 350USD...

 

Do you have that wiring diagram to share?????

 

euro said he will get me the diagram asap. his tuner is in asia contracted to tune some cars....if he is forreal then hopefully soon ill have the diagram and ill post it for all to see =)

 

Great mod !

Just like to point out one thing. The K24 we get in the Accord Euro here in Australia is listed to put out 140kW (190hp) as compared to the slightly higher 200hp in the TSX. Please take this into account when reading the dyno.

 

trigger do you have a diagram for it? someone please tell me they have a way to wire this up...

 

Nick is "forreal" - I can vouch for that.

Regards
Y
Melb, Australia

 

Unfortunately I dont. Thats the main reason holding me back from a VAFC-II as well.

btw to fellow Aussies, where can I get a K&N Typhoon intake in NSW? or do I have to import from the US? Thanks in advance

 

Hey I just recently installed a V-AFC II... I got a pro shop to install it, so don't ask me anything about installing... I am too dumb to know those stuff. Anywayz, but somehow it came out a problem, when I press the pedal all the way down (while turning your key to turn on the elec power, not before turning on the engine) it says my Full Throttle is only about 75%... has anyone facing the same problem?... I went to a sho to get it tune... but they told me... they can not Tune the VTEC controller part if it's not matching up right (while I am pressing down to force the full throttle, but the cotroller only detects 75%)... My tech told me it could be computer bug that, TSX in US using the system of Drive by Wire Throttle thing.. The computer of V-AFC II is not totally updated to that part... and plus somehow TSX has rarely low current running (when max throttle, it should be about 3V to 5V for other cars.. but my car only generates about 2.7 V or less)... so anyone has V-AFCII has the same problem.. and know how to fix it? Thanks... without using the V-TEC controller part... my thing only boosts up about 20 hp after the V TEC kicks in.. which is around 6500 rpm... then about average 2 hp gain alone the graph...

SO anyone knows how to fix that problem.. thanks for help!

 

ok one more timeTAKE IT OUT BEFOR EYOU MESS YOUR ECU AND ENGINE UP!!!!!! K there hahaha i feel better now