| Author | Message | ||
     Jerseyguy |
Ok - I got out again today and made some more runs up on the interstate. TFI settings: 3,0,0,7. www.patmedia.net/haynesfam . Click on "On the road data runs" | ||
| Norrisperformance |
At this point, if you had to take a guess, where do you think you'll end up. Looks like you going to need the tfi after all. But it also looks like you could get by without it. | ||
| Jerseyguy |
Mike - I think this is it - 3,0,0,7. Maybe that last pot could be moved. I'm still a bit rich at high throttle openings. I guess I have to go through the hassle of unplugging the TFI to have a control run with just the race ECM. It seems to hold a good lambda at steady state conditions IE low to moderate throttle openings. When I nail it it still goes pretty rich. That means either that the race ECM does it or the TFI pot #2 (so called accelerator pump) isn't really off at position 0. I REALLY wish Buell would make a programmable ECU. | ||
| Jerseyguy |
Hey Mike, I just had a thought .... a little shot of nitrous at WOT ought to lean the sucker out! lol. I wonder if my Drummer could pass pieces of aluminum..... | ||
| Norrisperformance |
Don't know, but I'm going to find out. I'll think she'll be ok. (Message edited by norrisperformance on April 06, 2005) | ||
| M1combat |
I've talked to George at Dobeck about how to turn off the TFI... He says that Fully counter-clockwise on 1, 2 and 3 are off, and the fully clock-wise on number four is off. I think this would leave the first three at 1:00 and the fourth at 11:00. I ended up at Off, Off, Off, 8:45 w/ a 12R, K&N, Holed airbox, pulled snorkel, Force header and Force exhaust. It's still rich... | ||
| M1combat |
I've got a Power Commander on the way, I'll give that a go... | ||
| Hogs |
M1, I wd. think its just about impossible for you too be fat all the way around running that setup ,you got some dyno runs back to back to show that or are you just thinking its fat everywhere??? | ||
| Jerseyguy |
Hogs, My 9 is experiencing a similar effect as M1's from the TFI. Too rich through most of the range. It especially goes rich at high throttle openings across the RPM range. That led me to turn "off" pot #2 and then pot #3. It got better but still rich. Not that George is wrong, but I have to remove the TFI to see if "off" is really off. | ||
| Hogs |
Jerseyguy, Thats strange pal, Why don`t ya try the stock ecm with your mods and the TFI? I wonder if the race ecm is at fault but even that wd. be hard to believe at high end throttle....Sounds like the TFI I got coming is a waste of $$$$,If thats the case I`ll send the sucker back and get something else before even trying it, Got a X1 power commander coming suppose to be, maybe thats the answer, So tell me how does your bike Run without the TFI and why Do you even think you need one yourself??As with all my mods now and running the D&D just got back from a ride and it Flies nothing wrong here at all, Just that I got the force almost ready to put on and thought I wd. need something for that?? | ||
| Jerseyguy |
Well, I just removed the TFI & am hoping to get out this afternoon for some runs. We'll see. Personally, I'd rather have the race ECM over the Stock with TFI because I am coming to believe more and more that the Buell engineers really do know what the hell they are doing. I'm just an amateur having some fun. | ||
| Hogs |
Yup, you and me both...,The wifes xb12 just about all the same mods as mine except with the latus muffler it works A1 as well, wack it and away ya goooooooooo, just not sure why all this talk on the TFI, I guess I mean if it runs rich with the tfi then who needs it,Unless either your Drummer or The force leans it out and then I can see the reason behind it, but all posts seem to say they all run Fat..., and thats still I don`t understand, of Course all my years are with Carbs, But if ya throw a open can and open the air up on carbs one will run LEan Don`t understand why the same isn``t true for Fuel injected If All things being equal, Do ya think that if one makes a one notch at a time and then ride for an hour or so whatever that wd. help the ecm to learn , just guessing here... | ||
| Glitch |
Yeah, but it'll run lean on the bottom with the race ECM, if you cut your air box. I'm now runnin' at 4, 1, 1, 7:30 runnin' really good, except at heavy acceration it pinged yesterday afternoon. I'm gonna change plugs tonight. | ||
| M1combat |
I have a Dyno run that indicates that it runs rich everywhere. VERY rich from 2200-2800. | ||
| Hogs |
M1 did you do back up runs, like three runs back to back with all the same settings, etc.etc.?? | ||
| Odie |
Just based on my decreased mileage alone I can say it runs rich! | ||
| Hogs |
Odie, How does yours run,I know you have your own pipe system on there , Does it haul SSA, no bucking, falling flat on its face etc.etc., and what settings are you using on the Tfi and are you happy with them for now or maybe better words just leaving it where it is and riding for now..?? | ||
| M1combat |
I only have one run, but they all looked the same. | ||
| Jerseyguy |
I made my runs without the TFI & got the data but haven't had time to analyze it completely. Initial impressions include that lambda goes way down both with & without the TFI on high throttle position openings across the rpm range (.7 to .8). Lambda at low RPMs and low throttle openings is leaner without the TFI, like around .95 to 1 (too lean for power just about right for pollution. So it appears that the TFI does good down low & lower midrange at settings 3,0,0,7 on a XB9. I have to study the data more. I may try the stock ECM with the TFI next. I'm off to Bragg POT tomorrow for 4 days. | ||
| Glitch |
On my dyno runs (without TFI-with Odie pipe- with cut air box, 03 XB9S) it ran so lean Steve thought the sniffer was broken. I'm running the proto-type Odie pipe. It didn't get rich until closed loop (after 3500rpm). I guess I should have been clearer about that. I've not had time to get a dyno done after TFI yet. | ||
| Briz31 |
I guess it all comes back to the issue: TFI was designed for the STOCK ECM, that appears to be where it has it's biggest potential gain. On the RACE ECM it's gain is limited as both the ECM and TFI are trying to achieve the same thing. Hence you have to use limited settings for a minor improvement, and with the costs involved it just seems a good way to flush your $$ down the gurgler. Well that's my 2c. | ||
| Jerseyguy |
Briz - I'm good at wasting $ - just ask my wife.... | ||
| Glitch |
I've never had the stock ECM. After my dyno seein' how lean it ran in open loop I saw no other alternative. I needed a jet kit, a jet kit is what I got. If I had a stock ECM I'd try 'em both and use to one with best results...but I don't. | ||
| Norrisperformance |
I know I have said it before. My 12 with race ecm ran over 16, so I had to have more fuel. I've had the bike on two different dynos so I know it was very lean. The tfi was money well spent. My bike doesn't surge, skip, hic up, spit, sputter or fart. For a Buell it just flat a55 flies. I have no idea why we are all having different results but clearly we are. GO FIGURE! Maybe my ecm was built on a Friday or maybe my exhaust flows better. Who knows, sure would be nice if everyone had easy access to a dyno. Drag bikes run a mixture of 12.6 | ||
| Gsxr_is_gone |
Well I have dynoed my bike from stock up to the mod race kit. Stock the AF at bottom and cruise where is should be. From 2700 to about 3700 the AF was about 12:1, from 3700 up to redline AF about 11:1 With race pipe and stock ecu the bike was lean atlow end and cruise,but still between 11 and 12 AF WOT. With the race ecu, AF for lower and cruise again where what they should be. At WOT the AF was arould 12:1. With the mod race pipe, tfi, and cut airbox, lower and cruise AF are fine and I'm running 12.5:1 to 13:1 at WOT tfi settings are 4, 2, 1, and 8 The bike runs great and I'm really happy with the mod race kit. | ||
| Glitch |
I have no idea why we are all having different results but clearly we are. Just goes to show we all have different bikes, even though we have the same brand of bike. Also shows why my settings may not be good for someone else, and why a dyno is important when playing with settings. Exhaust design, intake design, weather, it all comes into play, not to mention dynos are different as well. In open loop mine was closer to 18! Ive been on two different dynos as well, two different kinds of dyno. One had me at around 65 HP, the other around 85HP. The curves were close to the same, the AF ratio was the same as well. Guess which dyno I like the most  I'm not spitting, sputtering, or surging either, although I was with the stock TFI settings. | ||
| Sokota |
GSXR....what mods did you do to race pipe ? | ||
| Ingemar |
I have no idea why we are all having different results but clearly we are. And it shows that you can't download someone else's map into your PCIII or equivalent device and expect anything more than mediocre results (unless you're very lucky). | ||
| Gsxr_is_gone |
I cut out the inner tailpipe and made the hole to match the size of the larger tailpipe. The sound is a little deeper at idle, not to loud for the neighborhood, and louder when your on the gas. It works great. |
