MIVEC Conroller? Is there such a thing...

FtoSam · Post by **FtoSam** » Mon Aug 06, 2007 3:01 pm

I too dont think that it was the mivec controller adjusting your power...

Anything could affect a dyno reading...

the ONLY way to test it is put it back to normal... do a couple of runs. get the average...

whack it to what u think is better... then do a few more...

as in one the same day on the same dyno with no interuptions...

air temp, etc can make a fair difference in power..

eThix... Come along to Autosalon... do a run on normal, then change your setting and see if u get a better result... free dyno!!!

Post by **aza013** » Mon Aug 06, 2007 3:04 pm

that was done sam and that is the results of it
I to was under the impretion that it would not add power but it has shown me otherwise

FtoSam · Post by **FtoSam** » Mon Aug 06, 2007 3:18 pm

so it was done on the same dyno within say 20 mins of each other??

If so then... well.. im very surprised... as i think your the first person to get any gain from one.

Post by **aza013** » Mon Aug 06, 2007 3:25 pm

yes same day same fuel same dyno all the same.
it was all done in an hour start to finish did 3 runs changed the settings on controller and a nother 3 runs and so on.

it just came down to getting the right point for mivec to cut in and that was the out come.
some ppl refer to the honda controllers and how they dont work on them this is due to the time that honda has put into thre recerch for there moters and they have got it spot on with their settings.

when it comes down to it thats the only thing changed on the car to get that result so if it was not that then I would love to know how I got the extra power

eThix · Post by **eThix** » Mon Aug 06, 2007 9:26 pm

Yeah i might come along, my car is still getting repaired... be nice to see the mivec controller in use lol

khunjeng · Post by **khunjeng** » Mon Aug 06, 2007 9:52 pm

aza013 wrote:
khunjeng wrote:I hope the PM helped!! cheers.
ok I got the PM and thanks but I did already have that info.
I just got back from pulse racing and asked Paul what he did to get the power gain and he said "all I did was change the mivec points via the controller" there was no changing of ECU,no remapping anything like that just set the controller to 5900RPM.
so with that info and the dyno sheets that backs up what I said the mivec controller works.

and I would like to say at this point I am not trying to be a smart ass just trying to give the information I have on this topic

If you had the info and understood it you wouldnt be saying what your saying. Car tuning 101.

Here are some other peoples opinions, some of which have had more experience with the FTO than me.

http://www.ftoaustralia.com/modules.php ... controller
http://www.ftoaustralia.com/modules.php ... controller
http://www.ftoaustralia.com/modules.php ... controller
http://www.ftoaustralia.com/modules.php ... ivec+point

eThix · Post by **eThix** » Mon Aug 06, 2007 10:28 pm

well if i go to the dyno i guess all the qld fto members can see if it really does boost up ya car.

khunjeng · Post by **khunjeng** » Mon Aug 06, 2007 10:29 pm

Post by **aza013** » Tue Aug 07, 2007 10:39 am

in regards to the 112.5kws I have to say sorry as that run was done in 3rd
bellow is a dyno sheet of two runs in 4th the red line is with no controller and the blue line is with the controller on set t 5900rpm

so its up to you if you would like to agree or not but that is my results and I am happy with it.

FtoSam · Post by **FtoSam** » Tue Aug 07, 2007 11:25 am

Something about that graph.

The blue line is above the red line before even the MIVEC controller does anything...

It looks like something has changed...

You can see from that, that you had more power through the whole rev range. Then it gets bigger at the end..

My explanation is more air somehow... Not sure how...

also notice your A/F is increased.. across the whole range... Supporting my theory.

also this accounts for the difference being larger while in MIVEC (as the MIVEC cams love having more air)

Anyone confirm what im saying?

jonowong · Post by **jonowong** » Tue Aug 07, 2007 11:29 am

FtoSam wrote:Something about that graph.

The blue line is above the red line before even the MIVEC controller does anything...

It looks like something has changed...

You can see from that, that you had more power through the whole rev range. Then it gets bigger at the end..

My explanation is more air somehow... Not sure how...

also notice your A/F is increased.. across the whole range... Supporting my theory.

also this accounts for the difference being larger while in MIVEC (as the MIVEC cams love having more air)

Anyone confirm what im saying?

amen to that!

Delvance · Post by **Delvance** » Tue Aug 07, 2007 3:07 pm

Throwing my bag o' crap in too!

Logically, i agree with KJ as the mivec controller does not alter anything except when mivec kicks in. This shouldn't change the peak power readout of a dyno run as when mivec kicks in, the engine is still only relying on the factory ecu for the what mapping in regards to air/fuel ratio and ignition timing etc.

But how does the mivec controller work exactly ? I'm thinking perhaps the mivec controller actually fools the ecu as to what state the engine rpm's are really at therefore changing when mivec kicks in. For example, using Aza's tune/setting, it's set at 5900 rpm for mivec to come in. Factory is 5600rpms... so now, if the engine rpms are running at 6000rpm, the ecu thinks it's only 5700 rpms.

If the controller does work like this, then have look at the afr on the dyno just above. You can see the general curve of the afr graph has been shifted to the right (the basic pattern remains, but everything is later on the blue aftersetting controller curve eg peaks and troughs). We all know factory mapping has the afr going richer as rpms go higher to protect the engine, but because mivec pt is set higher now, it seems to me the afr curve has now shifted to the right as the mivec controller has tampered with the ecu's reading of rpms. With the curve shifted to the right, now the afr is leaner all the way to cutout, resulting in a bit more power. Basically the engine is now running with the same factory afr mapping, but the afr mapping now comes in at different times (later, to be exact) compared to unaltered ecu from factory.

It kinda makes sense to me, but without knowing what the mivec controller exactly taps into (ecu itself, or just the oil valve electronics for high cams?), can't say for sure. But the afr and resultant gain in power makes it seem like that to me.

Having said all that crap, i'm no expert so am probably wrong. And you're probably better off with something like an emanage for afr and ignition timing.

$0.0002

jonowong · Post by **jonowong** » Tue Aug 07, 2007 4:55 pm

still doesnt explain the extra fueling though!

Post by **Bennoz** » Tue Aug 07, 2007 6:19 pm

Who cares, its a handful of Kilowatts.... I use more than that having a crap of a morning... at the end of the day everyone wants a turbo so go buy a aftermarket ECU which will be able to cope with that. Think of the future.

Post by **aza013** » Tue Aug 07, 2007 7:26 pm

Bennoz wrote:Who cares, its a handful of Kilowatts.... I use more than that having a crap of a morning...

lol

well put Ben.
topic finished its pointless going on and on about it

oodLes · Post by **oodLes** » Tue Aug 07, 2007 7:34 pm

lol so Sam comes in and gives an explanation of what's happening in the graph then everyone says the topic is pointless.

This is a valid topic as someone may have actually gotten some more power out of a MIVEC controller and nobody has before. If this is the first one to we may as well investigate it.

eThix · Post by **eThix** » Tue Aug 07, 2007 7:47 pm

ok 4 things
1. dyno autosalon
2. my car with mivec controller
3. lets see
4. i'm cool
yay

Post by **Bennoz** » Tue Aug 07, 2007 8:10 pm

oodLes wrote:lol so Sam comes in and gives an explanation of what's happening in the graph then everyone says the topic is pointless.

This is a valid topic as someone may have actually gotten some more power out of a MIVEC controller and nobody has before. If this is the first one to we may as well investigate it.

Its been proven time & time again that the factory Mivec point has been set in the optimum position & that there is no point in playing with it. Im of the opinion that there was actually something slightly out with aza's tune & the controller corrected it.

Post by **aza013** » Tue Aug 07, 2007 8:11 pm

oodLes wrote:lol so Sam comes in and gives an explanation of what's happening in the graph then everyone says the topic is pointless.

This is a valid topic as someone may have actually gotten some more power out of a MIVEC controller and nobody has before. If this is the first one to we may as well investigate it.

I am all up for more investigation into it

just cant be bothered with the above posts back and forth, every one has an opinoin and is free to vioce it to and I am sertanly not taking it personally

so its all good.

ethix would be good to see what you get on the dyno to would they let you do two runs at auto salon one set with out and one with?

Post by **aza013** » Tue Aug 07, 2007 8:12 pm

that could explain it

Ben never thourt of that