PCV and the O2 Sensor
- Thread starter mfischler
- Start date
cbzdel
New Member
Thanks for the info! That type of system is new to me!
So I'm sending the PC-V to Dynotune to take a look at it - they seem to think the unit may be bad.
So my question is to those of you who have the TB exhaust and a K&N - did NOT having the PC-V installed cause any problems? Is the bike running lean or did you guys have it re-tuned?
Thanks!
So my question is to those of you who have the TB exhaust and a K&N - did NOT having the PC-V installed cause any problems? Is the bike running lean or did you guys have it re-tuned?
Thanks!
Glad to hear I'm not the only one with PC-V problems! Installed it Friday along with my Two Brothers Exhaust, which I had an 02 bung welded into for the Autotuner, figureing I would just hook it up to the computer Saturday morning and it would be all set, wrong!! After running a little bit I opened up the throttle and when I released it... stall!! Yeah, disconected the PC-V bike runs fine... the AFR1 values for the Autotuner never left 0. Sunday I was at the races at the New Hampshire Speedway and Rob's Dyno was there, he tried flashing the PC-V with the latest firmware but to no avail, still stalls out. Filled out a Tech Support Form on the Power Commander site this morning but haven't heard back from them yet, guess I'll give em' a call in the morning...
Dynotune got my module today and asked for 5 days for them to figure out if the unit is bad. When I talked to the tech today, he said it was the first time he'd heard of my problem (but there are a couple of other techs) - so other than woj and myself, not sure if anyone else is having trouble. He did say that 1% of the all units that go out are returned as bad but I don't know how real that is or if it is high or low. I just know that it didn't work on my bike (it runs great right now without the unit).
I would say however that the install is very, very simple - just ignore the section where they say to disconnect the O2 sensor :thumbup:
If you've already bought it - install it and see if it works. If you haven't, you may as well wait and see what happens to me before you do.
To reiterate - with the stock map my bike would idle, would run with mild acceleration, but if I gave it moderate to full throttle and backed off to idle, would drop to a stall. With the zero map, the bike would idle, but any amount of throttle would stall the bike when I backed off.
If you do install it - please let me know how it goes!
I would say however that the install is very, very simple - just ignore the section where they say to disconnect the O2 sensor :thumbup:
If you've already bought it - install it and see if it works. If you haven't, you may as well wait and see what happens to me before you do.
To reiterate - with the stock map my bike would idle, would run with mild acceleration, but if I gave it moderate to full throttle and backed off to idle, would drop to a stall. With the zero map, the bike would idle, but any amount of throttle would stall the bike when I backed off.
If you do install it - please let me know how it goes!
Hey m: thanks for getting back with the info. When I modified my stock exhaust I got a free dyno tune at JT&S Performance at Infineon Raceway here at Sonoma, CA. (J is a retired FF I worked with, and his new business is modifying bikes for speed/performance) Anyway since these bikes run lean at lower RPM's I decided to get a K&N filter and do a complete remapping off a dyno. I should have all the info and mapping values by weekend. Will post then.....
Well - good news so far...
Just heard back from the Dynotune tech who told me that there were some switches (software) that were not turned on in my unit. Didn't ask him how this could happen on just MY unit, but he said they fixed the problem and are sending the unit back. Hopefully, I'll have it to install this weekend!
I'll let you know how it goes!
Just heard back from the Dynotune tech who told me that there were some switches (software) that were not turned on in my unit. Didn't ask him how this could happen on just MY unit, but he said they fixed the problem and are sending the unit back. Hopefully, I'll have it to install this weekend!
I'll let you know how it goes!
Great news!!
I got the PC-V back from Dynotune and installed and the bike runs great!! Absolutely none of the problems from before and the performance is pretty awesome. I can feel a difference in the torque starting around 3k and the bike pulls strong and smooth throughout the power band. Took a ride on the freeway (to pull through the rpms) and then a ride through a couple of canyons. Nice and strong throughout!
All in all, I'm impressed enough as is to go get a dyno-tune and see if it can be tweaked any further.
For all of you with the same problems I had - just contact Dynotune and send it to them. Guarentee you'll be more than happy with the end result!
I got the PC-V back from Dynotune and installed and the bike runs great!! Absolutely none of the problems from before and the performance is pretty awesome. I can feel a difference in the torque starting around 3k and the bike pulls strong and smooth throughout the power band. Took a ride on the freeway (to pull through the rpms) and then a ride through a couple of canyons. Nice and strong throughout!
All in all, I'm impressed enough as is to go get a dyno-tune and see if it can be tweaked any further.
For all of you with the same problems I had - just contact Dynotune and send it to them. Guarentee you'll be more than happy with the end result!
That is good news! My dyno guy had to send the unit back because it wasn't registering correctly. They finally tracked the serial nos. and found out the company sent a unit for a fz6, (No R!). Makes you wonder...........all these other incidences........... but the Co. is sending the right unit out "priority". Which means Tues. next week to me. Thanks again.
Got the auto tuner to work after calling up Dynojet. Seems that when my buddy and I installed it when neglected to install the CAN termination plug, we had a rubber plug in place of it, oops. Now the auto tuners seems to be doing its job adjusting the fuel, but I still have it stalling out after running it for a little bit, noticed it when I took it out for a test ride today and the thing was stalling out when I let off the throttle during gear changes.. when down shifting very noticable!! Calling em' back on Monday..
Hey woj, can you give an update on how the PC V worked out for you? I guess U never gave a follow up. I had to send a unit back and just got it installed. The delay was due to my tech going to Bonneville for some speed meet. (He set a record for a naked mod. buell at 194 mph). Will post my data soon. Thx
Well, I just put my bike through it. (Tested it around town, on a windy stretch, a few highway rips, especially the last uphill on ramp from a stop....3rd gear at 80 mph/7200ish rpms and climbing!) Picked it up at Infineon in Sonoma where Danica Patrick and the Indy boys will be this weekend...........WOW! My initial experience with the PC-V is similar to post#31. It starts to noticeably pull sooner, quicker, with more power, in all gears from go. If I figure out how to scan my readout and post it, I will. Numbers are scary good but the buttdyno shows definite improvement in performance. FWIW I feel the improvement is noteworthy and worth the investment.
02 sensor and marthy
I'm concerned about this as well if I go with the marthy exhaust and pcv will it screw up my 02 sensor or does it not interfere if I leaves it plugged in? Anyone have any experience with this? I'm in ontario canada so I'm not sure if we have an 02 sensor or if all the bikes do.
Thanks in advance
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Thanks in advance
Y
yellowfz
O2 sensors are Narrowband sensors meaning they only read within a few AFRs of stoich (14.7) usually during idle to keep that stoichiometric reading in check, if you were to log the sensor you would see a fluctuation from lean to rich in a Narrowband going on, above a certain rpm O2s are useless.
That is why a PCV uses a Wideband UEGO sensor can read a much broader range (wideband) of AFRs in higher RPMs.
In automotive we can use a wideband to input narrowband data so we use the wideband to augment (we put the wideband where the narrowband O2 sensor is and use the UEGO sensor to supply the ECU with O2 data and the tuning module with the Wideband data, there should be 5 wires on the wideband 3 can be used for narrowband data) the narrowband and get the best of both worlds, however on a motorcycle I haven't done one but you should be able to do it as well, same principal would apply.
If you leave the narrowband (O2) it should work fine.
Sorry to bore people with technical crap.
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