[Spaz]

When doing the -99 you have to start adding fuel at the 2500 or 2250 area in order to avoid stalling. When I tried the matching of the 5% column it never worked. The best I ever had was when I added +55 but then maybe?your adding enough fuel to actually wash any oil away. On my airhead the general +25 worked, but that just made gunfires on my VROD.
The best way would be to put it on a dyno where you can monitor and adjust it when it happens.

Did you have your zero throttle position set at zero?

 

[ktombs1]

Yes
The -99 was posed to Dan as a test to see if his gunshot would disappear. It did like I thought it would. I would agree that there should be a combination that would cure it by adding fuel. I have moved on to the SERT as I had issues in the 3000-4000 rpm cruise area that are 99% gone, and I am patiently waiting for my Tmax.

 

[spinedoc]

You are pretty much cutting out fuel at those decel areas. You can do the same exact thing with the SERT/SEPST and completely cure the decel pops, but then it feels like the bike is shutting off for a second when you put it at 0 throttle. Once again I've been leaning it out contrary to the "adding fuel" suggestions and seeing much better results and much better mileage. But leaning it out, and completely cutting the fuel out are 2 different things IMO.

I would say I'm 99% successful in removing my pops, and 100% successful in removing backfiring. The reversion pops are gone since I put the lolliwasher in. The only remaining pops are occasional ones when engine braking downhill due to overrun, and I've gotten most of them with timing.

I'll be curious to hear your continuing results though.

 

[954rrmike]

Rocerdan I agree that the timing table may be useless without the extra module. You are the first person I have seen say this. I don't know why some maps change timing when nobody has the ignition module. I would like to know for sure if the ignition table does anything with just the pc3. Why would dynojet sell a ignition module if the pc3 did fuel and ignition? I am glad you worked out your issues.

Mike

 

[ktombs1]

To the best of my knowledge the PC3 does timing. I mentioned to RockerDan that there is a dead spot when going from decel(fuel off) to throttle roll on he may be able to tweak that. The last SERT map that he posted made mine backfire LOUD as well, the one he posted that was a joint effort with Rick hardley did it but I managed to tune it out. There is something to be said about all this and I dont think its as much of an exhaust issue as it is a 08 1250 timing issue.:banghead:

 

[Hal64hd]

PCIII does timing on harleys. Sportbikes require ignition module

 

[Intrudah]

Took the bike to work using that map and I didn't had any backfires, only a small pop around 3000-3200 RPM and it was just once.
I did had a minor backfire issue when I was leaving work and it did studder a little when I took it 60-70mph on 1-2 gear maybe this was due to the bike not being warmed up all the way or I may need to add some fuel at higher rpms, Didn't had any backfires issues while cruising after the bike was warmed up
BTW I also reset the throttle position on PC III after uploading the map.

 

[FastZR1]

Dan,
What did you do with your SERT before adding the PC III. I thought once the SERT has been added, it was locked to the ECM it was hooked too.
Glad you got the TH working right.
Ed

 

[spinedoc]

I dont think its as much of an exhaust issue as it is a 08 1250 timing issue.:banghead:

This is what I've been saying all along. I've been having a lot of luck with timing, but I've been very conservative as I don't want to damage anything. MJW930 was the one who turned me on to this. I believe a lot of the pops come from an overrun condition where unburnt fuel escapes the cylinder due to a weak flame front, apparent on engine braking.

I'd love for someone like him to take a closer look at this, hell I'd even gather up a collection fund if he ever wanted to put a TH on his bike.

 

[RacerXS]

This is good news, thanks for doing the legwork.

Now that you have decided to keep it you should probably get it Jet-Hot coated.....:stilpoke:

 

[ROCKERDAN]

hey guys....

well,after alot more riding...i did find that cutting OFF the fuel at 0TP(-99) was much too extreme for day to day riding....even when i tapered it upward into idle areas it would stall when clutch pulled in on hard decel at speed....so after more tweaking with all these theories in mind,i richend things up in lower range at 0TP....i think i got a real nice combo now....still needs more testing but so far i like this....you pc3 gurus please take alook at this latest version...It works well for my modded "deconed" thunderheader....

now ive gone oppostie direction and added alot of fuel,more then even spaz suggested and voila!


here is the map....please take alook you pc3 guys and see what you think.
SEE POST #46 on page 4
http://www.1130cc.com/forums/showpost.php?p=1541666&postcount=46

Dan

 

[ktombs1]

Hey if I recall this was a much stronger pulling map than the one you are using. Only diff is you are running with the SERT base map which probably makes it richer. You could apply your newfound theories to this one as well. I would still go with the SERT.

Posted a SERT map for test purposes

 

[ROCKERDAN]

Hey if I recall this was a much stronger pulling map than the one you are using. Only diff is you are running with the SERT base map which probably makes it richer. You could apply your newfound theories to this one as well. I would still go with the SERT.

Posted a SERT map for test purposes

i checked out this pc3 map.....its weird,as it opens differently in the pc3 software..you can see all the rpms up to 9grand in one window without scrolling down,this goes in increments of 500rpms....all the other maps ive been using go in rpms increments of 250rpms.....why is this map different?..they are both 'advanced maps'


also,both cyls are near same i see....i think with TH and stock headpipes all the maps ive seen all have many differences in cyls.

Dan

 

[ktombs1]

When in the PC3 software go in to tools and click on" Maximize Map Resolution". Its just the resolution its in when saved

 

[ROCKERDAN]

Hey if I recall this was a much stronger pulling map than the one you are using. Only diff is you are running with the SERT base map which probably makes it richer. You could apply your newfound theories to this one as well. I would still go with the SERT.

Posted a SERT map for test purposes

Hey buddy...

well I played around alittle more last night and today.....and got the pc3 map real close,runs nice and any slight pop i get is very slight,no more huge gunshot/cannons....

so,being the anal person I am...i decided to take your advice & play around with SERT TIMING,after seeing what you were doing with your SERT map...

First I tried your SERT map and a ZERO pc3 map....wasnt enough fuel for my setup,lots of surging...but the bottom end where you BUMPED the timing really felt awesome....pulled real hard and barely any backtalk from my modded TH.

so,knowing this....I took MY PREVIOUS BASE SERT MAP(176ZL001-A1) and simply pasted in your SERT MAP TIMING from 5000rpms downward....and then loaded it in with SERT....I then went back to MY BEST PC3 MAP and loaded it....

I gotta say,the bike feels like I added 20 HP from 2000-3500RPMS!....its simply hauls the mail down low like never before...no more stutters anywhere down low like it had before....the timing bump also helped to reduce the backtalk even moreso too!....

thanks for the ideas and theories here....I feel this is the best its been ever.

here are the MAPS below Im using...anyone with SERT and PC3 might want to try this setup if you have a THUNDERHEADER with lots of popping,or even if you have no popping,this setup rocks!

Dan

PC3 "final"map here:
http://www.1130cc.com/forums/showpost.php?p=1541666&postcount=46

 

[spinedoc]

Dan this is what I've been telling you for a long time now. The timing is making a difference.

I'd be curious to check out that map, between the 3 of us I'm sure we could make a nicer SERT map.

Hey buddy...

well I played around alittle more last night and today.....and got the pc3 map real close,runs nice and any slight pop i get is very slight,no more huge gunshot/cannons....

so,being the anal person I am...i decided to take your advice & play around with SERT TIMING,after seeing what you were doing with your SERT map...

First I tried your SERT map and a ZERO pc3 map....wasnt enough fuel for my setup,lots of surging...but the bottom end where you BUMPED the timing really felt awesome....pulled real hard and barely any backtalk from my modded TH.

so,knowing this....I took MY PREVIOUS BASE SERT MAP(176ZL001-A1) and simply pasted in your SERT MAP TIMING from 5000rpms downward....and then loaded it in with SERT....I then went back to MY BEST PC3 MAP and loaded it....

I gotta say,the bike feels like I added 20 HP from 2000-3500RPMS!....its simply hauls the mail down low like never before...no more stutters anywhere down low like it had before....the timing bump also helped to reduce the backtalk even moreso too!....

thanks for the ideas and theories here....I feel this is the best its been ever.

here are the MAPS below Im using...anyone with SERT and PC3 might want to try this setup if you have a THUNDERHEADER with lots of popping,or even if you have no popping,this setup rocks!

Dan

 

[ktombs1]

Hey
I do have a couple richer maps for SERT I have been playing with I have so many different combos I lose track of whats what in between the times I get to ride. I will post some base SERT maps for 2005-2007 SE 1250 that I compared the timing with so you can see where I am coming from. You can see what they were setup for in the edit file comments tab.From my research on here I was lead to believe that the 2006 and 2007 1250 SE engines were the same config as ours in regards to cams, TB injectors etc that is why I messed with the timing I do not know why it is different except maybe for EPA and emissions. I do check my plugs periodically and have found no signs of detonation or excessive heat and the timing marks are within reason. (I trust/hope the anti-knock works)Its my engine and if I @#*! it up oh well theres always a first.:chair:

Oh and you do know that the timing tables available in the PC3 do work if thats your choice of tuners.

Kent

 

[ktombs1]

Oh
I do believe that SERT map I posted for Dan to test was a combo of my timing with the AFR and VE tables from the RockerDanRick-5 map with a few little tweaks.
I only had one decel backfire within the first minute while cold after that I only had minor cruise pops on a good 45-60 min ride.
( outside temps 30-31C)
Kent

 

[ROCKERDAN]

Kent....

i ran the map i posted above all night last night....very nice overall!....hardly a pop ever and wow does it haul the mail!..

so,are you saying the pc3 timing works for us?....i thought we needed the ign module to make it work???....that is good news,i wonder how many TIMING POINTS we can advance safely on pc3 map?


dan

 

[ROCKERDAN]

yep....i guess the difference here is Kent went with quite abit more advance,and i like it alot!.....great work here guys!

Dan

Dan this is what I've been telling you for a long time now. The timing is making a difference.

I'd be curious to check out that map, between the 3 of us I'm sure we could make a nicer SERT map.