HP2 Sport - Poor running

[Motostratos]

Hi Guys,

This is my first post here, but have been a regular snooper

Took delivery of my HP2 Sport in March this year after a 12 month wait, but ownership thus far has not been a hugely happy one.

Just prior to the first inspection service, the bike was running extremely rough and cut out regularly, both when the engine was hot and cold. The guys at my local dealer identified a fault and replaced the ignition coils. This cured the problem for 2/300 hundred miles, but the bike is now back a the dealer, as the problem has re-surfaced.

This time, no fault on the diagnostic equipment, so it is causing a bit of head scratching with the techies.

As this forum is the font of all knowledge, i wondered if any of you folk had encountered any similar issues.

I am signed up with the BoxerTrix forum in the UK, but to my knowledge nobody in the UK has suffered similar problems.

Any assistance would be much appreciated.

Thanks.

[Guest24]

Jeff Williams has been riding that same rocky road on his HP2S. He has #16 and your's is a '09 model year (no big differences other than Euro specs. I'm starting to wonder if the problem is in the computer. I've not had any problems with mine.

[SergioK]

So it had less than 600 miles on it when it first started showing symptoms?

[Dr. Curve]

Trash in injectors for poor mist and burn? Not enough initial charging of factory battery to 13.9 before starting? Intermittent grounding of spark to wiring harness, frame, or back on self? Tech relying on electronic track-down misread fault complexity and replaced a partial effect rather than the actual cause? "no fault on the diagnostic equipment" may indicate that the problem is non electric as in a poor mist injector, sluggish fuel line pressure due to water clogged filter, a fluctuating weakened spark caused by a flawed plug or partial grounding of the spark signal along the way?

Look for a physical fix on this one if the diagnostic equipment is not flashing. Absolutely flawless running here, especially in the mountains.

[Motostratos]

Originally Posted by Nail24

Jeff Williams has been riding that same rocky road on his HP2S. He has #16 and your's is a '09 model year (no big differences other than Euro specs. I'm starting to wonder if the problem is in the computer. I've not had any problems with mine.

Thanks for the tip, currently in contact with Jeff

The first sign of a fault came up around 500 miles, so the coils were replaced at the first service.

Pops and bangs more than it did on the overrun, especially when cold, more of a backfire then.

Runs really rough when cold, slightly better when warm, but not perfect.

[Guest24]

Originally Posted by Motostratos

Thanks for the tip, currently in contact with Jeff

The first sign of a fault came up around 500 miles, so the coils were replaced at the first service.

Pops and bangs more than it did on the overrun, especially when cold, more of a backfire then.

Runs really rough when cold, slightly better when warm, but not perfect.

I've had one misfire on the right jug as I came to a stop that killed the engine. Think I mentioned it to you Jim while we were on our ride. Then as I shut down at the Bikehaus last Tuesday I felt a backfire thru the TB on the right side while my leg was resting against the rubber induction boot. I may take it to Touring Sport in Greenville and see if it threw a code. I'm still wondering about the motronic or whatever they may have renamed it. I think that they've get these aircooled bike running as lean as possible to keep the California EPA folks happy. All it would take is a little piece of hot carbon to get early ignition. It's just a passing thought about the DOHC boxer. It is not your oil/hex head after all. Most of us are not running them at the revs the racers are on a daily basis.

[shreddr]

are any of you guys trying the Techlusion on your HP2's? Its a very simple installation, and pretty straightforward tuning. It would probably be hard to screw it up, because you are either adding fuel to the closed loop, the acceleration pump, or the WFO settings, and if you want to compare back to stock you just pull the lead off the battery, no need to disconnect everything else.

[Guest24]

Originally Posted by shreddr

are any of you guys trying the Techlusion on your HP2's? Its a very simple installation, and pretty straightforward tuning. It would probably be hard to screw it up, because you are either adding fuel to the closed loop, the acceleration pump, or the WFO settings, and if you want to compare back to stock you just pull the lead off the battery, no need to disconnect everything else.

I'll go that way if the problem persists; however, while the warranty is in force I'll hold the manufacturer accountable to make the bike perform as advertised, Shreddr. I'm not sure I'll allow them to put updates into the motronic without fist telling me the purpose of the update. Sometimes a patch can make something else worse.

[JonyRR]

go find someone with an EGA; it can be a simple 2-gas analyzer.
observe the readings at idle.
high HC and low CO are a sign of lean misfire; this is very typical of these things and it's only gotten worse over the years. Check for air leaks at all the 'usual suspects' locations as this can enhance an already-lean condition.

[Guest24]

Good idea Jony. I'll do that when I get back from the Keys. Got to go shut down the place for hurrican season.

[Stampertje_35]

No problems with mine ... standing at 2600 km
But I'm riding my HP with a Rapidbike & Akra and no O2 sensor


For a lot less money, about $ 0,50
try a 20 ohm resister (in serie) with the air-temp sensor
It will fool the air-temp sensor, and it's thinking it's about 10 celcius cooler
and it will enriche the A/F a bit

this in combination with loosing the cat (àla RoLoo)
your bike runs like hell with a good A/F and a very strong low-range torcue

Oh ... yeahhh ... and throw the cable (and box) away from the butterfly valve !!!

This is no Bull****, one of my Dutch HP friends did this and his bike preforms like mine
www.hp2sport.nl

[signit98]

Originally Posted by shreddr

the acceleration pump,

???


...and just how exactly do you do that?




Being that there is non and all...

[cageyar]

Originally Posted by signit98

???


...and just how exactly do you do that?




Being that there is non and all...

It's just a generic reference to the six stages of adjustment for the Techlusion and how they mimic old carburetor settings, like idle circuit, accel pump, needle, primary main, secondary main, etc. Dobeck's Performance actually terms for the stages are:
Mode 1; Cruise Fuel
Mode 2; Acceleration Fuel
Mode 3; Full Throttle Fuel
Mode 4; Lower O2 sensor Limit
Mode5; Upper O2 sensor Limit
Mode 6; Beginning of Full Throttle
Dobeck relates these settings to carburetion stages in their explanation of operation.

[Jeff Williams]

love love love,
all you need is love, da ta da da da.

[Guest24]

Originally Posted by cageyar

It's just a generic reference to the six stages of adjustment for the Techlusion and how they mimic old carburetor settings, like idle circuit, accel pump, needle, primary main, secondary main, etc. Dobeck's Performance actually terms for the stages are:
Mode 1; Cruise Fuel
Mode 2; Acceleration Fuel
Mode 3; Full Throttle Fuel
Mode 4; Lower O2 sensor Limit
Mode5; Upper O2 sensor Limit
Mode 6; Beginning of Full Throttle
Dobeck relates these settings to carburetion stages in their explanation of operation.

Finally, a poster that explains things in plain English. Thanks, this now makes more sense to an old fart. Did you get that Captain? Jeff, how's your bike running?

[Jeff Williams]

Bubba,
love love love
yes
KY, valoline, and hot sause.

The bikes runns better with the fuel management system but it still runs rough, then out of sync, then sounds like a ducati. First week of june getting a new ECU from BMW. Then we'll see.
jeff

[Guest24]

Jeff, I think the ECU is the culprit. My question is how does any of us owners know which software is on the EPROM--If there is an EPROM.

[Boybiker3]

Originally Posted by Stampertje_35

No problems with mine ... standing at 2600 km
But I'm riding my HP with a Rapidbike & Akra and no O2 sensor


For a lot less money, about $ 0,50
try a 20 ohm resister (in serie) with the air-temp sensor
It will fool the air-temp sensor, and it's thinking it's about 10 celcius cooler
and it will enriche the A/F a bit
snip
www.hp2sport.nl

Good idea. But I think you mean a 2000 ohm resistor?

[Jeff Williams]

Originally Posted by Nail24

Jeff, I think the ECU is the culprit. My question is how does any of us owners know which software is on the EPROM--If there is an EPROM.

Bubba,
from what i was told their have been a number of updates to the ecu's and they can only take so many before their full. The pisser is that the shops didn't know that their are two types because they weren't identified just updated.
jeff

[Footymunt]

hi

my HP2 is doing the same Dealer cant find the issue , did you ever get to the bottom off the fault