GPR exhaust with PCIII

[bzane]

Too weeks ago, installed a GPR exhaust that comes with a "Y" mid pipe a few weeks ago. Put a Power Commander PC3 on the next day.

 

Quick summary, a lot more power at higher (4500+) rpm. The engine used to go flat at about 6000, now loves to charge up to 8000. Complete personality transformation. Feels smoother and happier. The power is reduced in the 3000-4000 range, but it was torquey enough that this was a good trade-off. Saves about 20-25 lbs.

 

The 4500/5000 ping is gone.

 

Went without the (dual!) db-killers. The sound is much nicer than stock. Still quiet until you twist the loud handle, so is a great improvement. Just the sound a stocker *should* have. The flavor of the sound is nice, but nothing special.

 

Would definitely recommend! Sorry I waited so long, after having the bike 6 years. It is a 2002 LeMans. Makes me certain to keep another 6 years.

 

Absolutely, positively need the PCIII. The one day without it, it was nasty, surging at 3000 and generally not happy. Only took minutes to install.

 

Just guessing, I set the PCII for +2 at low, +3 at mid, and +2 at high. Expected to be playing with it a lot, but ran great at those settings immediately, so haven't tweaked it since.

 

Got the PC from 58cycle and the exhaust from Moto Legends.

 

Has been very smooth (for a V11), except a hot day in the desert (maybe 90) when I was trolling thru town.

 

Cosmetically, the single-sided titanium pipe is quite pretty and takes the visual weight off the back. So much so, the bike looks better without the pillion cowl. A surprise.

 

Question:

 

Since I've assumed the pipe would lean it, and wanted to fix the freeway ping, I automatically set the PC for the settings above.

 

Is it possibly running too rich?

 

If it is too rich, how would I know? Does it matter?

 

 

[JesterGrin_1]

 A picture of that setup would sure be nice.

[Chuck]

 

 

If it is too rich, how would I know? Does it matter?

Look at the plugs. It certainly does. Too rich will wash down the cylinder walls and it won't last another 6 years.   

Oh, welcome to the V11 forum, btw..

[Tom M]

If you're running the stock 2002 ECU with a PCIII you might want to try the gh67 map in the fileshare section.  It's much better than stock and it should be better than adding fuel across the board.

[bzane]

Thanks for the rich/lean info & map pointer!

 

Per request, attached are photos.

 

[docc]

Aaaaaah! "Champagne!"

 

That explains it!

[bzane]

Okay, I give up, what does "Aaaaaah! "Champagne!"" mean? :-)

[pete roper]

Piss the Power Corruptor off. Un-needed and outdated technology, the 15M and 15M-RC are an open book, there are a host of mapping options or build your own.

 

Pete

[HRC_V4]

Is the fit of the system good?  Are all the mounts where they are supposed to be?

[sp838]

I love my GPR!

[docc]

Okay, I give up, what does "Aaaaaah! "Champagne!"" mean? :-)

The color of the '02: "champagne."

 

One of the most beautiful LeMans colors, IMHO. Everybody knows I love them all, but there are a few that really pop the design language, and I think the champagne is one.  I suspect the red/grey of '02 is more common, but IDK.

 

Sweet ride, man!

[bzane]

Ah, per champagne, thought you were referring to maybe running "rich"or the flavor of the sound. :-)

 

Per the fit of the mounts, it just connects to the two head pipes in the front, and then hangs off the left passengerpeg/mufflerhanger. Like most aftermarket pipes, uses a sleeve on the muffler, so the fit always works. Have to admit I didn't mount it myself, but I suspected the hardest task was going to be removing the old pipe (swear, hammer, swear, heat, cold, swear, hammer) and removing the crossover bracketry (and California canister). Seemed a good choice to let a mechanic do that for 1 1/2 hours.

 

The PC3 was trivial - remove 4 bolts holding ECU on under the seat, swap connectors, turn the ECU 90 degrees so cables fit nicely, restore 4 bolts.

 

Per PC3 versus 15M, different strokes for different folks! Reflashing the ECU yields ultimate flexibility... but absolute power corrupts absolutely. I'd spend the next 6 years tweaking it and probably making it worse. I'll likely spend no more than a few days tweaking the PC3 (fewer knobs) and probably can't make it as bad as if I had ultimate flexibility. Refuse to dig out my MSPC to do a detailed PC3 mapping, been there, done that. Am a simpleton, now.

[docc]

Here's a guy who, in his first five posts, swears three times and hammers twice.  I think your dues are paid, man!

 

Regarding PC vs re-mapping . . . why not simply perform a "Decent Tune-up", tweak the CO Fuel Trim as necessary (with guzzidiag) and see how she goes without getting carried away?

[sp838]

I hung the GPR exhaust myself, it was pretty easy. There was a little fiddling necessary to get the muffler bracket where I wanted it, and I needed a couple extra washers and a longer bolt, but it was all "bolt on" type of stuff.

 

I too have a PC3, the reason being that it makes dyno tuning possible. The ECU can't be updated in real time, certainly not the way it can with a USB connection as easily as the Power Commander, and pretty much all the performance tuning shops here in the US use Dyno Jet stuff. I frankly don't understand the hate for the PC3, it's pretty awesome actually. You can even map each cylinder individually, and swapping out maps is really quick and easy.

[czakky]

No hate here it just seems like folks should have a proper baseline on tuning. That includes a "decent tune-up" before electing to remap or add a pc3.... That's me though.