Wunderlich Power Controller and Dyno runs?

[BTBR]

Aimed at those that have fitted one of the afore mentioned units.

Were you happy to fit it and follow whatever instructions are included in order to obtain the best/optimum results.

or

Have you put it on a dyno run and had it done properly?

or

Did you do it yourself and then have it dynoed? If so, were the Wunderlich setting correct.

Last question, did it stop the farting and banging on throttle shut off. Not that I want to get rid of it, coz I love the sound of it.

I have the Remus headers and BMW Akrapovic can (baffle out), but have no plans at this satge to replace the OE air filter.

Now as far as I am concerned it runs a sweet as a nut. It performs with no flat spots, although there is a power surge towards the top end of the rev range. But I like that to be honest as it gives you that little extra kick when you need it.

 

[Thunder]

I went for option one and used the Wunderlich settings in9itially then did some tweeking using the seat of my pants, personally it was sufficient as I don't really want to run the bike on a dyno.

Yes it stops the farting and banging!!!!

 

[BTBR]

I went for option one and used the Wunderlich settings in9itially then did some tweeking using the seat of my pants, personally it was sufficient as I don't really want to run the bike on a dyno.

Yes it stops the farting and banging!!!!

And then you went and sold it.........

 

[dlevett]

Interesting - Mine is a definite improvement, but has resulted in a small, but noticable, drop in fuel economy - around 3 mpg.

Maybe I'm just 'using' the extra power and torque more!

 

[Thunder]

And then you went and sold it.........

Thought I was changing the bike, did'nt and regretted it ever since hence my posts in the wanted section.

 

[Thunder]

Interesting - Mine is a definite improvement, but has resulted in a small, but noticable, drop in fuel economy - around 3 mpg.

Maybe I'm just 'using' the extra power and torque more!

The Wunderlich can only add fuel unlike a Powercommander which can lean the mix as well so it's not to suprising really.

 

[Pukmeister]

Why not visit the Techlusion site and read the blurb? Seems that the GS never needs to have fuel removed as it is lean enough already, plus it saves on development costs to only add fuel.

I am unsure what is best to use to optimise the fuelling on my GS, any experts out there care to give advice ??? I'm not looking for massive power gains, just smooth useable torque right through the rev range and no risk of burnt valves, poor emissions etc. I have a Scorpion Titanium end can and a K&N filter, still running the catalyst.

 

[BTBR]

Why not visit the Techlusion site and read the blurb? Seems that the GS never needs to have fuel removed as it is lean enough already, plus it saves on development costs to only add fuel.

I am unsure what is best to use to optimise the fuelling on my GS, any experts out there care to give advice ??? I'm not looking for massive power gains, just smooth useable torque right through the rev range and no risk of burnt valves, poor emissions etc. I have a Scorpion Titanium end can and a K&N filter, still running the catalyst.

I am no expert, but IMHO running the K&N and the cat together seems like a complete waste of time?

Plus, and again I am no expert, but running a high air flow air filter without increasing the fueling is just asking for trouble surely?

 

[Buckhouse]

I have Remus headders,Akro can without baffel,K+N filter and Wunderlich large intake snorkel.On the Dyno it runs a bit rich low down but is spot on from 6500rpm.Settings as standard on controller.Guy said the Controller was a bit crude but was an improvement.Still slight pop and bang but much less with controller fitted.Best torque was from 3500-6500rpm.Am very pleased with results,very different bike from standard.Brakes next!

 

[Pukmeister]

I am no expert, but IMHO running the K&N and the cat together seems like a complete waste of time?

Plus, and again I am no expert, but running a high air flow air filter without increasing the fueling is just asking for trouble surely?

Probably is, but I thought I'd give it a try and it makes a louder induction noise if nothing else, which I like.

One day I'll get the remus headers when funds allow.

 

[Dee Tee]

I am no expert, but IMHO running the K&N and the cat together seems like a complete waste of time?

Plus, and again I am no expert, but running a high air flow air filter without increasing the fueling is just asking for trouble surely?

BTBR, I'm no expert either. Which is why my bikes have been set up and dynoed by folk who are.I would recommend Nick at PDQ Taplow 01753730043,or Rhencullen (formerly of Hinkley but now next to Mallory Park) contact details unknown ,i'm afraid.The Peace of Mind ,and the knowledge of what your bike is doing is pricless.I can canvass the ZRXOC if you want another choice.

 

[Shep]

I am no expert, but IMHO running the K&N and the cat together seems like a complete waste of time?

Plus, and again I am no expert, but running a high air flow air filter without increasing the fueling is just asking for trouble surely?

I'm no expert but my understanding is that FI systems are better at coping with the increased air flow, esp 1200's with the more advanced sensors, wheras carburated engines are very sensitive due to carbs relying on a number of factors to give the correct amount of fuel to the engine, these factors include atmospheric pressure, airbox vacuum & inlet manifold pressure and air flow rate, change any of those on a carburated machine and you could need to adjust the settings manually.

FI by its very nature is constantly monitoring the same factors plus a few more (anti knock, exhaust etc) so within reason depending on the system the fuel/air ratio should automatically adjust to cope with any changes to exhaust or airbox.

My understanding is the power controllers are effective at adjusting out the lean patches manufacturers have "built in" to pass emisions.

A very simplistic view, but its mine, feel free to disagree, i'm learning all the time

Shep

 

[Dave T]

I'm no expert but my understanding is that FI systems are better at coping with the increased air flow, esp 1200's with the more advanced sensors, wheras carburated engines are very sensitive due to carbs relying on a number of factors to give the correct amount of fuel to the engine, these factors include atmospheric pressure, airbox vacuum & inlet manifold pressure and air flow rate, change any of those on a carburated machine and you could need to adjust the settings manually.

FI by its very nature is constantly monitoring the same factors plus a few more (anti knock, exhaust etc) so within reason depending on the system the fuel/air ratio should automatically adjust to cope with any changes to exhaust or airbox.

My understanding is the power controllers are effective at adjusting out the lean patches manufacturers have "built in" to pass emisions.

A very simplistic view, but its mine, feel free to disagree, i'm learning all the time

Shep

Yes, AFAIK to an extent you're quite right. The problems arise when the mods done to the bike are such that they take the bike beyond the range of adjustment that the FI has. That's when you need a box of tricks, to in effect 'fool' the FI.

 

[Shep]

Yes, AFAIK to an extent you're quite right. The problems arise when the mods done to the bike are such that they take the bike beyond the range of adjustment that the FI has. That's when you need a box of tricks, to in effect 'fool' the FI.

Would fitting a K&N and removing the "cat" make that much difference Possibly at flat out with wide open throttles but unlikely any other time.

Shep

 

[Dave T]

TBH Shep, as far as the 1200GS is concerned I don't know. My only experience of this is with my (now sold) Impreza Turbo. Just removing the cat (but retaining the standard air filter) on that took the FI out of its adjustment range resulting in the need for an FI re-map (I had the car dyno'd before and after, so I know it was fine as standard, and lean at W.O.T with the de-cat, and also got the 'check engine' dashboard light coming on. (Maybe the GS may also do the 'warning light thing' if it's out of it's adjustment range and senses a problem, so no light = no problem???)). In the end I opted for a hi-flow 'sportcat' on the impreza as that brought things within the range of FI adjustment and so didn't need the remap, and the car would still pass MOT emissions which it wouldn't have done with the de-cat.

I guess it depends how much adjustment the 1200GS FI has, and how lean the bike runs as standard as to whether a de-cat and K&N really beggars things up that much. FWIW, I'm risking headers/can on mine without dyno run (although I will get one done - time is the limiting factor as well as the number of folks on here who are running headers/can/std air filter with no apparent probs), but really my policy is if I've saved up to afford headers/can/K&N/other mods, I can afford a dyno run to be on the safe side. Right or wrong, it seems like 'spoiling the ship for a ha'peth of tar' otherwise IMO.

 

[Dee Tee]

If it helps,i put my GS12 (Remus S/S Headers and Ti Can,Baffle in)on a Mobile Dyno at the TT.It made 98 BHP and 95 lbs Torque,fuelling was ok with just a slight step at around half throttle.I've not had any adjustments made to it,so FI seems to cope with losing the cat and having the new system fitted.

 

[BTBR]

If it helps,i put my GS12 (Remus S/S Headers and Ti Can,Baffle in)on a Mobile Dyno at the TT.It made 98 BHP and 95 lbs Torque,fuelling was ok with just a slight step at around half throttle.I've not had any adjustments made to it,so FI seems to cope with losing the cat and having the new system fitted.

Yes, many thanks Dee Tee.

Now what I would really like to see now is the same setup, but with a PC fitted and done on a dyno.

 

[Dee Tee]

So would i. . . . . . But i've got a KTM 640 waiting to have a Ti Akropovic Exhaust and a Flat slide carb fitted,and a Manx Norton Rolling Chassis that is going to get a Kawasaki Z750 fitted.Etc,Etc!!

 

[APE]

Aimed at those that have fitted one of the afore mentioned units.

Were you happy to fit it and follow whatever instructions are included in order to obtain the best/optimum results.

or

Have you put it on a dyno run and had it done properly?

or

Did you do it yourself and then have it dynoed? If so, were the Wunderlich setting correct.

Last question, did it stop the farting and banging on throttle shut off. Not that I want to get rid of it, coz I love the sound of it.

I have the Remus headers and BMW Akrapovic can (baffle out), but have no plans at this satge to replace the OE air filter.

Now as far as I am concerned it runs a sweet as a nut. It performs with no flat spots, although there is a power surge towards the top end of the rev range. But I like that to be honest as it gives you that little extra kick when you need it.

I have the K&N, full Remus system, Wunderlick PC which i fitted myself. Had it run on a dyno before and after the PC was fitted with this system. It ran lean at high revs without the PC. The recommended Wunderlich settings worked best - we tried to find a better setup but were unable to. The PC did not iron out the flat spot at 5k rpm. My bike has never farted/ banged so can't comment on that

 

[dlevett]

Interesting - Mine is a definite improvement, but has resulted in a small, but noticable, drop in fuel economy - around 3 mpg.

Maybe I'm just 'using' the extra power and torque more!

I've done a few more miles on mine now and, over about 1,500 km, it is averaging about 3 mpg less i.e. 6% increase in fuel consumption but more than that as an increase in grin factor