Full Akro AND K&N??????

[Mark Hooton]

Guys, can anyone express an opinion (funny or not) that I can consider?

I`ve fitted a full Akro system and yes, verily, the mid range seems greatly improved along with a bit more at top end (btw the `flappy thing` has remained fitted).

I do not have a power commander nor have I had the bike `remapped` - the blurb on the box says its an instant gain of power and it seems to be right!

I`ve also got a K&N filter - during my KH250 days simply putting on a K&N filter was deffo the right thing to do but would it be necessary on the 2010 R1200GSA DOHC engine?

I`m just a little concerned that by changing too much I might actually be going `backwards` what with all this canbus/ecu/black magic which are on the bikes nowadays?

Would the ecu realise that the airflow has significantly changed and then change the other perameters accordingly? Would fitting it make the engine run too lean? Would the ecu compensate?

All I want to do is make the bike go as fast as a Smackheads Giro but with all the technical gubbins on the bike I don`t want to be wasting my time.

Has any other brave Tosser out there had any experiance with this and would they be kind enough to share their wisdom with me?

Ta.

 

[APE]

I've done the full system with the K&N on a 1200 (not twin-cam mind) and the filter made feck all difference and it was pain in the ass to clean - my advice is sling the filter on eBay.

 

[mike j]

K&N

Mark
I have no personal experience of problems with fitting a K&N filter as I have kept the original filter but I do remember reading somewhere that a K&N filter with a full Akro system without a remap makes the engine run very lean.
It may be worth your while doing a heap of investigation before fitting rather than damaging your engine.
But it is only an opinion and I cant even remember where i read the article.
Regards
Mike

 

[Mark Hooton]

Mmmmm

Thanks guys, I kinda gathered as much!

 

[Spike]

adding the k&N you will more than likely need to fit a power comander too.

I have just added a full remus system to my bike and i am keeping an eye on the plugs at the mo to see how she is running, too lean and will have to get something to sort it. I left the baffle in too as it sounded absolutely pants with the baffle removed.

spike

 

[Blackal]

Adding a K&N may not make you notice any immediate improvement, but unlike a normal paper filter - will not cause a restriction a few months down the road.

If you decat the exhaust and fit a free-er breathing exhaust can, together with a K&N type filter - there is a possibility that the engine will run lean, and even result in detonation.

A PowerCommander is the expensive way around this - a cheaper option is the Techlusion module, and cheapest of all - is the module which fools the fuel injection into thinking the air charge is colder than it actually is - therefor increasing the fuel supply slightly.

I wouldn't carry out any of the above, while the bike was still in warranty. What's the point in paying (or having effectively paid) £300 a year, to have it torn up because you had modd'd the engine.

Al

 

[Sgt Bilco]

Mark

If you fit the K&N you will need a PC to go with it otherwise the engine will be running way too lean.

Another tip is to run with the baffle in teh exhaust system as the boxer seems to run way better with back pressure

 

[Beemerman59]

I have remus headers, Akra can and K&N filter. I opted to go the Wunderlich route with their Power Controller which seemed a much simpler but as effective in the real world a solution as a Power Commander. On my '08 GSA this combination finally made the bike predictable to ride at low revs and it takes off like a scalded cat all the way to the limiter without any hesitation. For me this is a seat of the pants experiment, if you want actual numbers/graphs etc to prove the point you will need a PC and get it dyno'd.

 

[Blackal]

I have remus headers, Akra can and K&N filter. I opted to go the Wunderlich route with their Power Controller which seemed a much simpler but as effective in the real world a solution as a Power Commander. On my '08 GSA this combination finally made the bike predictable to ride at low revs and it takes off like a scalded cat all the way to the limiter without any hesitation. For me this is a seat of the pants experiment, if you want actual numbers/graphs etc to prove the point you will need a PC and get it dyno'd.

The Wunderlich unit is just a re-badged Techlusion unit at twice the price.

As you say though - the PC has the ability to reduce fuel from standard in any area - but this is of very limited benefit in real life.

Techlusion/Wunderlich enriches the mix where required.

Al

 

[APE]

I also had a wunderlich unit and it's a crude piece of kit.

I'm really not convinced all this tweaking is neccessary on a twin-cam. Money better spent down the pub

 

[Blackal]

Mark

If you fit the K&N you will need a PC to go with it otherwise the engine will be running way too lean.

Another tip is to run with the baffle in teh exhaust system as the boxer seems to run way better with back pressure

I think that may be too simplistic a response.

Most of the benefit of a K&N filter, is the method by which it removes contaminants from the air-charge. It does so without reducing the differential pressure accross the filter (leaves and pieces of paper not included, of course).

So - the filter does not diminish air flow in service life.

Additionally - there are other (cheaper) solutions to detonation than PC.

I would (and have) spent the money on a Power Commander on a sports bike, but (to me anyway) it seems like a big expense for a GS.

Al

 

[Mark Hooton]

Mmmmmmm

After riding for three miles I took the K&N out

 

[ihandyman247]

After riding for three miles I took the K&N out

Hmm
I am surprised that you done that!
I had Remus and K&N and it was running perfect , never had a problem
I am just going to do the same thing on my TB GSA

 

[Boxerboy55]

I have remus headers, Akra can and K&N filter. I opted to go the Wunderlich route with their Power Controller which seemed a much simpler but as effective in the real world a solution as a Power Commander. On my '08 GSA this combination finally made the bike predictable to ride at low revs and it takes off like a scalded cat all the way to the limiter without any hesitation. *For me this is a seat of the pants experiment, if you want actual numbers/graphs etc to prove the point you will need a PC and get it dyno'd.

I also have Remus headers and Akra can on my 06 GS. I briefly fitted a K&N filter but was nervous about it running lean so returned to standard filter. I acquired a Techlusion from this place and thought I could ensure right mixture, but suffered a dreadful mid-range flat spot. Verging on dangerous. Till I fitted new plugs and backed off the overly rich mixture. Now it storms all the way to red line. Didn't have a dyno, but have "track tested" it using my custom seat-of-pants calibration tool. And it is definitely better than basic. And I like it sans baffle. Except for MoT day, which will be any day now.

 

[Dean]

Anyone using akro, with the K&N coupled with Iridium plugs? if so what do you think of them apples

 

[Beemerman59]

Anyone using akro, with the K&N coupled with Iridium plugs? if so what do you think of them apples

I am...them apples are luvverly

 

[Beemerman59]

I also have Remus headers and Akra can on my 06 GS. I briefly fitted a K&N filter but was nervous about it running lean so returned to standard filter. I acquired a Techlusion from this place and thought I could ensure right mixture, but suffered a dreadful mid-range flat spot. Verging on dangerous. Till I fitted new plugs and backed off the overly rich mixture. Now it storms all the way to red line. Didn't have a dyno, but have "track tested" it using my custom seat-of-pants calibration tool. And it is definitely better than basic. And I like it sans baffle. Except for MoT day, which will be any day now.

That would make sense as I understand a stock '08 runs leaner than a stock '06. I run the Wunderlich settings for my configuration which are spot on. Just as a trial I put the accelerator module on in series to see what that did and got very similar results i.e too rich. For me, all this effort was not to gain any hp but to make the bike easier to work on a light throttle at low speeds which it has. An additional benefit though is the bike now has a very linear response all the way through the rev range. Colour of the plugs when I last changed them was a light brown, but I have put Iridiums in now. Its also stopped the problem I had with the engine cutting out going from third to second when slowing down - that might just be a coincidence though. Mine hates it with baffle out though - stalls all the time.

 

[Mark Hooton]

Hmm
I am surprised that you done that!
I had Remus and K&N and it was running perfect , never had a problem
I am just going to do the same thing on my TB GSA

Mate, after reading the kind threads from other members I just thought the risk was too great. One kindly soul actually rang me straight away to tell me to think carefully as running lean could cause serious damage.

I guess I am just not willing to take the risk.....................

The option of further tinkering does have its advantages but, for now, I might just enjoy the `safe` power increases from the full akro.

 

[Mistacat]

I have put a full remus system on my 09 GS1200 and K&N filter.
I prefer real time (on road) info rather than dyno.
I use a wideband lambda sensor with innovate Lc1 + AFR gauge on the bars.
Results - Idle + cruise ok obviosly closed loop looking after fueling at around 14.7.
I understand the loop is TPS sensitive so an overlean condition cannot occur for a very long period.
Top end ok up to 100+
Hard exceleration slightly lean around 13.2 would have prefered 12.5 for best performance
Conclusion system looks after mods well unlike my other jap bikes which I have had to fit power commanders to and do a lot of work on the recomended PC download maps to get them right (MPG and performance).