Greetings and hallucinations to all. I ride an 01 LFHTPI with Big Boyz heads, torque plate/honed barrels to 96", S&S510c cam, Big Sucker, KB flat top pistons and a .035" cosmetic gasket and a tecklusion DFO that I have had on the bike for 4 years since the build. I have run longshots with thunder monster baffles, ran and sounded excellant, one of the best sound HD sounds in my opinion. Ran a LSR C model 2/1 for a bit before puttin the longshots on. Currently put on V&H true duals with Wild Pig 2" baffles, 5/16" bolt up through the pipe with 3 nuts in the center for better back pressure. Make a long story shor the right side is running slightly richer. Put NGK stock plug in the front and one heat range cooler in the rear. Both plugs look identical, a nice light brown ash color on both. Now the richness is very slight compared one to the other. I think the look is exacerbated by the fact that the ends of the mufflers are gold colored to begin with.

You can wipe off the soot exhaust and get a very light coating on your finger or on a rag, but it is very very light. Left side you get some but again not that much when wiping it out. Gas mileage has gone down a bit too but people tell me that is a fact with true duals. I went from 41 mpg's down to right around 38-39 after DFO adjustment. I never noticed any more or less soot exhaust build up on the LSR nor the longshots. Well the longshots had the soot but it was equal on both pipes and not that much really.

I have heard tell that I need a fully tuneable EFI add on like a PC, Tmax, SERT etc. But I ain't willing to spend the bucks until I am convinced I need one of them. I think the plugs give a major indication as to how the bike is running internally and if the plugs look good I should leave well enough alone. Beside several hundred bucks just ain't the cards. I can put any number of a set of pipes back on including a V&H pro pipe set up on or the LSR, ground pounder duals, LSR, Longshots or the stock exhaust. I also noticed that before I bought the Wild Pig mufflers I was running B&E stage 2 mufflers and didn't notice any difference in exhaust build up. So what are your opinions. thanks

 

If you are happy with your bike and don't have the money for an EFI fuel/ignition management product ride on with what you have.

Spark plugs will look good if they are getting the correct amount of fuel for the ignition timing you are running. EFI tuning, dyno tuning, is about the process of adding fuel and timing until knock occurs and reducing timing 3-5 degrees throughout the various rpm and load regimes that you are likely to experience riding. Bascially, it's the process of optimizing the efficiency of the engine.

So, while you may have good looking plugs and are happy with the bike, a good fuel/ingition managment system on your bike with good tuning will perform better than what you currently have. How much better--can't say since you don't have a baseline of performance; but, your fuel mileage should be over 40 mpg with a well-tuned build.

But so what--if you're happy with the bike and don't want to spend the money for a fuel/ignition managmenet product--ride on and enjoy your bike. But your fuel and ignition mangement is a relatively "dumb" set-up; there are "smarter" systems available as a tool to better, more efficient/powerful engine performance. Are they "necessary," not really.

 

has a SERT w/o a really good tuner tool is useless...SERT w/o dyno is not optimal, like me, i have SERT on my 07, but no dyno machine here in my city, fortunately someone here which an EFI tuning teacher in the Statesendme a map, and tweak ita little to suit my weather and all i can say my bike now run very good....wipe both of my exhaust tip and get same amount black sooty, not too much but just a little black....run cooler with this imported map...thanks to Doc1 which gave me a map and teach me how to tweak it....u can pm him

 

ohh..and Doc1 told me that rear cylinder need to added a lot fuel to balance the right side, coz the rear cylinder run very lean on a true dual....hope this help

 

I don't know I think the plugs will tell the story on any engine as to how it is running internally. My oil temp never gets above 210 deg no matter how hot or cold out it is. Obviously in the winter here the bike doesn't get much above 190 deg actually. I don't blow any smoke out the exhaust and really truth be told when I change the oil about every 5k miles it seems to be about where I filled it on the dipstick maybe a tiny bit lower. This is a police bike from Yonkers NY.

I have done dyno pulls with the LSR and long shots but never had it tuned with the DFO on it, just did pulls. Seemed pretty decent with the build I have, perfect afr up to 3k rpms then it actually was a tad rich if I remember something like 14.8/afr and over 4400 rpms it leaned out a bit. I am tyring to find the sheets I had printed out. Granted with a tunable EFI system it could be better but for the several hundred dollars it would cost I just don't think the trade off is worth it. Maybe I am making to big of a deal out of it. I get an ocassional back fire at arond 2600 rpms I never had before but I don't get the sneezing and popping the MM system is noted for either. Idles good too which from what I hear is a miracle with the MM throttle body. Maybe I'll throw the pro pipe on tomorrow to check that out. Never had it on really only the LSR which is very very good just when I would lean into turns I would scrape the right floor board.

Decisions decisions. Ain't it grand. Well thanks for the input and keepem sharp

 

14.8 is NOT "rich"...it is way LEAN! Get it dynoed....[/code]

 

Yep your right. I should have stated at over 4400 it was a bit lean at 14.8/afr and lower afr at start up up to 2800 it was like 12.8/afr. My statement was a bit ambigious I belive. Between the 2 rpm ranges(2800-4400) it was way way rich at like 10.8/afr which I corrected after talking with George at Teklusion. I had the yellow pot set way high at 9 position, now it is at 5 position. Most of my riding is done between 3k and 3600 rpms. I don't see an edit feature here. Thanks and keepem sharp