Author Topic: 14' v7 muffler change, requires ecu remap? (Read 25037 times)

Allflatblack · « **on:** January 30, 2015, 09:38:04 AM »

Hey guys. That 2014 V7 that I took in to clean up for a very pretty girl has some funky stuff going on. She bought the bike second hand. It has a few things bobbed, looks like it whacked something as it has new handlebars, the right steering stop broke and the fork dented the tank. That all is easy. The bike has no mufflers and included a box with stubby mufflers and the throttle body mass airflow unit wrapped in bubble wrap. The girl said that she was told that the unit would have to be, or was sent out for a "reflash" to work with the stubby mufflers. Lots of work for some stupid short mufflers, I say. Any one know if there is any truth to this? Put it together and bring it to a dealer to be re mapped? I would think that a machine with two oxygen sensors would do it itself. Thanks for any advice.

John

Allflatblack · « **Reply #1 on:** January 30, 2015, 09:50:58 AM »

I just spoke to the girl. She said that the PO has done a MIU ECU reflash but that the TPS had to be reset before installation. Hmmm

Kev m · « **Reply #2 on:** January 30, 2015, 10:04:42 AM »

Damn that sounds a bit like the guy who was on here in NYC that was rebuilding a salvage he'd bought for his girlfriend.

He was going to put short mufflers on the thing, and had already changed out the bars to something more flat-tracky... I think there was some talk of it being sorta Scrambler-esque.

Wonder if they broke up and this is that bike.

Is the speedo normal? I think he was either just refacing it or putting on a custom instrument cluster or something.

There's a thread here about it.

Anyway, popular theory is that it is very self-adjusting, but like everything it has its limits and that even if self-adjusting some would prefer it remapped anyway.

But it sounds like you have your answer - sounds similar to the Guzzitech reflash - remove the ECM (integral with the throttle body in this case), send it for the flash, get it back and have the TPS reset (though I wonder why that's necessary in this case, on the other Guzzitech reflashes that's necessary because the TPS remains behind on the bike's mechanical throttle linkage, but in this case the TPS is integral with said throttle body/ECM assembly and went along for the ride so you would think whoever relfashed it would have reset it too).

<shrugs>

Kev m · « **Reply #3 on:** January 30, 2015, 10:07:36 AM »

Here's said thread:

http://wildguzzi.com/forum/index.php?topic=72517.0

said bike, and said girl:

and here's how it sat at last report at the end of October:

Allflatblack · « **Reply #4 on:** January 30, 2015, 10:33:14 AM »

Well, hope it's all there!

Allflatblack · « **Reply #5 on:** January 30, 2015, 10:35:23 AM »

And yes, that is the bike and girl! I received a bike and a box and a one sentence explanation. Thanks man.

Dean Rose · « **Reply #6 on:** January 30, 2015, 11:37:56 AM »

Quote from: Allflatblack on January 30, 2015, 10:35:23 AM

And yes, that is the bike and girl! I received a bike and a box and a one sentence explanation. Thanks man.

Did you get the girl too?

Allflatblack · « **Reply #7 on:** January 30, 2015, 11:56:45 AM »

My wife will only let me have one now. Crazy right?

drawnverybadly · « **Reply #8 on:** January 30, 2015, 12:24:17 PM »

Damn I remember following that thread closely, I just assumed the winter killed his updates.

If I recall correctly, the guy said he was sending the ecu and the mufflers to Todd @ Guzzitech to get remapped. You might want to get in touch with him to see what was done.

Kev m · « **Reply #9 on:** January 30, 2015, 12:26:49 PM »

I just want to know the story now - break-up or lack of time/drive to finish it?

Loftness · « **Reply #10 on:** January 30, 2015, 12:56:42 PM »

:pop

twhitaker · « **Reply #11 on:** January 30, 2015, 01:01:33 PM »

Quote from: Allflatblack on January 30, 2015, 11:56:45 AM

My wife will only let me have one now. Crazy right?

They say that polygamy is one spouse too many. The same could be said for monogamy. ;D

Kev m · « **Reply #12 on:** January 30, 2015, 01:15:46 PM »

Quote from: twhitaker on January 30, 2015, 01:01:33 PM

They say that polygamy is one spouse too many. The same could be said for monogamy. ;D

And that's all different than Bigamy - you see Bigamy is when I have TWO BEERS, and I give you ONE - that's "Bigamy"! ;-T :BEER: ;-T

tonUPRacer · « **Reply #13 on:** January 30, 2015, 02:32:22 PM »

This bike has bad ju ju, aura, vibes, curse etc. First it was crashed with just a few miles, 2nd owner parts with it after presumed break-up, sell it now!

Moto Fugazzi · « **Reply #14 on:** January 30, 2015, 06:40:45 PM »

According to the subject line, the muffler is actually 14' Long? If so, it will need a reflash, and probably some yellow flags on the ends of them!
Ken

Mayor_of_BBQ · « **Reply #15 on:** January 30, 2015, 09:52:28 PM »

Hot gal with a hot bike.. Hope you get it sorted out.. Looked like the PO/PBF had it rolling in the right direction!

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56Pan · « **Reply #16 on:** January 30, 2015, 10:01:21 PM »

Quote from: twhitaker on January 30, 2015, 01:01:33 PM

They say that polygamy is one spouse too many. The same could be said for monogamy. ;D

:D Oh, man. That's got my name all over it.

johnr · « **Reply #17 on:** January 31, 2015, 01:04:56 PM »

I was wondering what had happened to that project. Now I'm wondering even more.

Kev m · « **Reply #18 on:** January 31, 2015, 04:38:06 PM »

Uh, it's probably easiest to start by reading the thread I linked.... It doesn't answer everything, but it at least sets up the start of the project.

kevdog3019 · « **Reply #19 on:** February 02, 2015, 11:33:57 PM »

Wow... Was just thinking about this thread while I picked up my seat today. Would love to hear the story. He's a lawyer or something. He was doing nice work on it, now this....

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Allflatblack · « **Reply #20 on:** February 03, 2015, 07:41:42 AM »

I'm dealing with the damage to the tank, triple tree and fork brace first and then pursuing the fuel system issues after that. Three bikes in the shop in front of it. I have had some good advice come in on PM, thanks guys.

Cam3512 · « **Reply #21 on:** February 03, 2015, 07:49:03 AM »

Look at the photo of her sitting on that bike. Body language says "hey uncle cam, can I sit on your motorcyle?"

That bike is nothing but a piece of ass jewelry to her. Pretty seat, cute pipes, etc.

He probably knew that and had enough.

Just an educated observation.

kevdog3019 · « **Reply #22 on:** February 03, 2015, 08:06:04 AM »

Quote from: Cam3512 on February 03, 2015, 07:49:03 AM

Look at the photo of her sitting on that bike. Body language says "hey uncle cam, can I sit on your motorcyle?"

That bike is nothing but a piece of ass jewelry to her. Pretty seat, cute pipes, etc.

He probably knew that and had enough.

Just an educated observation.

That is absolutely right. She looks pretty fresh to biking and I'm not certain it was ever her idea to get one. He was enthused to get rolling on it "for her" but outdoor storage in the winter probably hampered a lot of things including his spark to work on it. It wasn't ever about her except on an artistic level. It makes her butt seem small, yes!

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Allflatblack · « **Reply #23 on:** February 03, 2015, 08:46:27 AM »

This is a paying job that she contacted us through a friend to get finished. It is in fact her first bike, and I always caution people to stop the customization shit and get the bike running to learn before you go nuts, but what is done is done. Most important to me is that the front end is straight and true and that the brakes work. The mufflers are certainly shorter than 14" and they are more like the resonators on the end of race bike mufflers: packing around the straight through internal perforated pipe.
The young lady seems sure that the "flash" was done, and now all that needs to be done is the TPS should be reset. That is the mystery to me. Perhaps they meant that the cables need to be re attached to the TPS, as a TPS is simply a rheostat. I have a lot of experience and education related to fixing things but not much when it comes to mysterious work done by previous owners in order to hot up a fuel injected bike. I appreciate the interest and help.

Kev m · « **Reply #24 on:** February 03, 2015, 09:18:09 AM »

Quote from: Allflatblack on February 03, 2015, 08:46:27 AM

This is a paying job that she contacted us through a friend to get finished. It is in fact her first bike, and I always caution people to stop the customization shit and get the bike running to learn before you go nuts, but what is done is done. Most important to me is that the front end is straight and true and that the brakes work. The mufflers are certainly shorter than 14" and they are more like the resonators on the end of race bike mufflers: packing around the straight through internal perforated pipe.
The young lady seems sure that the "flash" was done, and now all that needs to be done is the TPS should be reset. That is the mystery to me. Perhaps they meant that the cables need to be re attached to the TPS, as a TPS is simply a rheostat. I have a lot of experience and education related to fixing things but not much when it comes to mysterious work done by previous owners in order to hot up a fuel injected bike. I appreciate the interest and help.

;-T

The fact that she contacted you leads me to believe she is interested in it. No matter, we're just having fun with speculation. I know that my wife really loves her current bike (and I think loved some of her previous ones too) but there's an element of loving how it looks too.

Anyway, on the TPS thing.

On older Guzzis (and lots of EFI models) where the TPS was replaceable and physically adjustable you would change the position the rheostat so that to achieve the proper voltage that the ECM would expect to see at idle with the throttle closed.

But on late-model Guzzis both ones with a serviceable but non-adjustable TPS (like the CARC models where I believe you can replace the TPS but it is mounted in a fixed position) and ones like the V7 with the non-serviceable TPS (Guzzi says you have to replace the whole throttle body) then anytime you have touched something that might effect it (linkage adjustment on the CARC models or mapping on any of them) then you have to tell the ECM to relearn whatever voltage the TPS rheostat is returning at idle/throttle closed position. This is the electronic TPS "reset".

Here's a thread where we discussed a little more about this throttle body and I finally realized it was not ride-by-wire as we first thought:

http://wildguzzi.com/forum/index.php?topic=70142.0

Loftness · « **Reply #25 on:** February 03, 2015, 09:25:36 AM »

Amazing how many people on this thread can look at a picture of someone, read a tiny bit of back story, and decide they know exactly what's going on in that person's life. It's like the National Enquirer up in here.

Allflatblack · « **Reply #26 on:** February 03, 2015, 09:49:09 AM »

So with advice from Peter Y. I just had a nice conversation with Dave, the Yorktown, Va Rexxer distributor.
The ECU re-flash is done on the unit and it is then re-installed. If it runs poorly, it must be brought to a party with the correct Guzzi-compatible diagnostic computer, who then clicks: Re-set TPS, and clear application parameters.(can't read my handwritten notes, maybe acceleration parameters, idiot!) That is it. There is a chance that it will run perfectly without the TPS being re-set. Let's all bet on that chance being zero for me.

It is refreshing to get good advice from people who know what they are talking about. thanks Peter, thanks Kev and everyone else. I,ll try to have this bike out of the shop within two weeks, Ill let you all know how it goes and will send pictures.

John

Kiwi_Roy · « **Reply #27 on:** February 03, 2015, 09:55:42 AM »

Hopefully the young lady will join us on the forum.

Simplyj was doing good work, not just chopping it up like so many do, it will be a unique Guzzi for sure

Allflatblack · « **Reply #28 on:** February 03, 2015, 10:11:05 AM »

Clear adaptable parameters!

Kev m · « **Reply #29 on:** February 03, 2015, 10:16:04 AM »

Yeah, it's the learned trim adaptors from 02 sensor feedback.

On the TPS reset, it depends on the particular physical adjustment of the throttle body and tps as it came from the factory. For instance, my Breva 1100 just happened, when balanced, to have the TPS reading dead center in the desired range, so resetting meant nothing as long as no physical change was made to it.

You could do a reset with a VDST, or Guzzidiag... I THINK the same is true for the 1TB models, but I've never successfully connected Guzzidiag to my current Stone (I really should try that again before I have an actual NEED to do it).

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Author Topic: 14' v7 muffler change, requires ecu remap? (Read 25037 times)

56Pan