2010 CalVin Questions

[grebmrof]

Recently purchased a low mile 2010 CalVin that is mostly stock...the crossover muffler below the tranny has been changed out for an H pipe (probably this one: http://www.mgcycle.com/index.php?main_page=product_info&cPath=26_95&products_id=1746).  While the bike sounds alright on acceleration, it produces some horrendous popping sounds on trailing throttle and downshifts - 4th to 3rd, 3rd to 2nd...I have the stock crossover muffler and am believing that I might be able to largely eliminate the popping by putting it back in place.  Thoughs?

Also, anyone familiar with what processor this bike carries?  Perhaps a remapping might also help or eliminate this situation?

I'm somewhat familiar with the driving light wattage, the windshield height stuff, the fuel filter bulging and maybe a few other things - but all of that stuff pales next to the popping I am getting on decel.

Thanks for thoughts on this.
Tom

[LowRyter]

The bikes were a little lean.  I'd live with the rumble and not screw with the crossover.   

Most Guzzi crossovers didn't flow and cracked broken.

Ride it like you stole it.  It got this far, why screw with it?

[j.r.r.]

Couple years ago I installed Mistral crossover for 1100cc California Vintage and Black Eagle (MG2004SVINTAGE) on my 2009 CalVin and experience the same symptoms as you described:



To remedy the problem I bought brand new ECU on eBay and asked seller to ship it to GuzziTech. Todd from GuzziTech uploaded his map and mail it back to me. After I swapped the ECU the popping was gone 100% and in addition the bike was noticeably better in 2nd and 3 rd gears. This is ECU which are installed on California Vintage bikes, you can confirm this by removing side panel on the left side of the bike:



I paid $169.00 for ECU, $250.00 for ECU map plus $50.00 for shipping.

The cheaper option would be to install original crossover assuming you can do the work and this will also eliminate the popping on deceleration.

[janguzzi]

H-pipes like Mistral should not be used!
There are several reports in the German Guzzi forum that such H-pipes will give you a more powerful sound but your bike will lose torque!
This is based on experience of almost all Cali 1100i drivers who tried this.
The catalytic converters are not placed in the stock crossover, they are placed in each silcencer.

If you still want such a H-pipe, you can ask Beetle for a map.
He and user "ncdan" from this forum developed a Calvin map for ths setup.
DannyP-Mod12.bin
=> Mistral H-Pipe
=> Lambda off   

Beetle also made a map for a stock Calvin which is better than the original one.
CalVin_15RC_special-5.bin
=> Lambda off
=> The main map has approximately 3% more fuel across the range.
=> The acceleration map has approximately 7% more at the bottom, and 25% more at Wide Open Throttle (WOT)

[grebmrof]

Thank you very much for responding.

[j.r.r.]

H-pipes like Mistral should not be used!
There are several reports in the German Guzzi forum that such H-pipes will give you a more powerful sound but your bike will lose torque!
This is based on experience of almost all Cali 1100i drivers who tried this.
The catalytic converters are not placed in the stock crossover, they are placed in each silcencer.

If you still want such a H-pipe, you can ask Beetle for a map.
He and user "ncdan" from this forum developed a Calvin map for ths setup.
DannyP-Mod12.bin
=> Mistral H-Pipe
=> Lambda off   

Beetle also made a map for a stock Calvin which is better than the original one.
CalVin_15RC_special-5.bin
=> Lambda off
=> The main map has approximately 3% more fuel across the range.
=> The acceleration map has approximately 7% more at the bottom, and 25% more at Wide Open Throttle (WOT)

If I would be facing this issue today I will definitely go with Beetle map:
DannyP-Mod12.bin
=> Mistral H-Pipe
=> Lambda off
Not only this is the cheapest option but also Beetle will customize the map specifically for your bike.

[Zoom Zoom]

The biggest consideration I have regarding the H pipe is ease of access to the gear box drain plug. Otherwise getting to it is a PITA. That is a trade off that I would willingly make just for that reason.

John Henry

[janguzzi]

Newer 1100i Californias have this additonal drain plug:



So the stock crossover can stay mounted on the bike.
You can also see that here:
http://www.motoguzzicalifornia.com/2010/11/gear-oil-change/

[Ncdan]

Tom, my 07 Calvin is the same as the later Calvin’s. I had several issues with mine, excessive heat, spitting back when accelerating etc. Mark(Beetle) worked with me  tirelessly and patiently for months, cold and hot weather, working out the bugs to produce what I concluded to be a perfect map for that motor.
I did go with the minstrel Hpipe and loved the sound and Preformance. I won’t argue the “loss of torque” argument but my Calvin felt stronger in every RPM range and sounded absolutely great, like a 327 Chevy during acceleration. I road the bike several thousand miles before and after the changes and feel sure I know the difference in the way she performed. I didn’t change mufflers, no need to.
The H pipe is a simple and cheap change and if you are not satisfied with the outcome it’s easy enough to change things back but I doubt you ever will, I never looked back and neither did the guy I sold her to. Good luck with the new gal, she’s easy to love:)

[janguzzi]

Hi Danny  , ....

In the German Guzzi Forum there is a Calvin owner who opened his airbox (two large openings in the upper cover+K&N filter; he has not removed the cover+snorkles) and uses a special mapping for this.
The result is a torque improvement around 3000-4000 rpm.

[oldbike54]

 beetle map beetle map beetle map

 Did I mention beetle map .

 No , I'm not getting a cut   

 Dusty

[Sheepdog]

Re-flashing the ECU really makes all the diff, particularly in the performance off-idle. I added Mistral Classics, modded my air box, and had it re-mapped to suit. The bike runs and sounds great and there is no popping on deceleration. Highly recommended!

[Zoom Zoom]

Newer 1100i Californias have this additonal drain plug:



So the stock crossover can stay mounted on the bike.
You can also see that here:
http://www.motoguzzicalifornia.com/2010/11/gear-oil-change/

You are of course correct and I am aware of that plug from when I had my EV's. I know also that only one of the plugs have a magnet on it so if one were going to use the rear plug, it might be worth swapping the two around so the magnet can be checked for swarf. I thought about it but figured the very best place to drain from was the very bottom in the middle so I went with the old style crossover. But that is just me.

Anyway, no right or wrong. Whatever someone decides is fine with me. I was simply pointing out considerations.

John Henry

[grebmrof]

Newer 1100i Californias have this additonal drain plug:



So the stock crossover can stay mounted on the bike.
You can also see that here:
http://www.motoguzzicalifornia.com/2010/11/gear-oil-change/

The 2010 CalVin I have has that rear drain...never knew about that, not sure if it is lower than the plug at the bottom of the tranny.  In any case, I've reinstalled the stock crossover muffler along with the sensor...everything is still loose and I have to pause until tomorrow, then off for a ride to see if much has changed.  Yes, I heard - beetle map, beetle map, beetle map... that could be next...  All I want now is no popping, drives me nutz... err, nuttier...

Oh yes, the ECU on this CalVin is the same as referenced by j.r.r.  But most of you already knew that, I didn't...

[oldbike54]

 Tom , did I mention beetle maps ?

 Calvins are really nice motorbikes , maybe the best combination of looks and ergos in the California line .


 Dusty

[grebmrof]

It is hard to forget the description of the fuel tank on California's as christened by John in Vermont... flacid whale p_____ (FWP)   That one really cracks me up.  I think Guzzi's design dept did pretty darn good given the shape of that thing - the Calvin's paint stripes actually do a good job of making that tank look good, whether the tank was painted black or white.

[Ncdan]

Hi Danny  , ....

In the German Guzzi Forum there is a Calvin owner who opened his airbox (two large openings in the upper cover+K&N filter; he has not removed the cover+snorkles) and uses a special mapping for this.
The result is a torque improvement around 3000-4000 rpm.

Yes I’ve heard of guys modifying the air box to allow more air flow and that’s fine as long as one makes the ECU adjustments for the bikes system to accept the increase of air. I think I do remember someone saying they did not like the increased noise that modification brought on.

[grebmrof]

Ran about 100 miles yesterday after changing the Mistral crossover back to the stock bulbous crossover muffler.  Bike was noticeably quieter, but I could still hear popping on decel and trailing throttle - so next step is to get that beetle map and hopefully that should resolve that.  Thanks again to those that responded.

[Cam3512]

If you're going the Beetle map route, put the H-pipe back on and tune it with that.  Save some weight and have easy access to the bottom drain plug.

[guzzi ride]

BTW Beetle does have a stock bike map. I haven't tried it on mine yet

[Ncdan]

If you're going the Beetle map route, put the H-pipe back on and tune it with that.  Save some weight and have easy access to the bottom drain plug.

Agree 100% no way would I ever put the factory hpipe back on. Let mark tune it with the minstrel hpipe and will sound and preform much better.

[grebmrof]

If you're going the Beetle map route, put the H-pipe back on and tune it with that.  Save some weight and have easy access to the bottom drain plug.

The stock muffler crossover weight is carried low, the bike is not a lightweight anyway, I like relative quiet and as "guzzi ride" says, Beetle has a map for a stock configuration - that is the way I hope to go.   ...and I hear you Ncdan, but I'm good with the stock performance and hopefully with a Beetle map, it will perform even better.  In the meantime, I will hold on to that Mistral crossover H pipe, who knows what I will want to do next year...
Thanks

[geoff in almonte]

Mark will work with you until your bike is right.

It took a couple of tries to get it with my (stock) 08 CalVin.

Good luck!

G

[janguzzi]

Beard (mastermind behind GuzziDiag) helped me on a mapping for the CalVin (stock) which is a bit more sophisticated than the one from Beetle regarding the fuel consumption.
We are now at version 5 (DonVolkeroSpecial_0 5.bin). With version "04" I had a bit pinging at 30°C (86°F) ambient temperature accelerating from 2000-3000 rpm in 5th gear.

Any volunteers here testing this map?
CO-Trim should at least be at "0" (https://wildguzzi.com/forum/index.php?topic=101637.0).