| Author | Message | ||
     Mrbikle |
I recently put on my HMF slip on pipe and did a dyno to see where I was at. Important things to know: -OhSsBee tuned to stock pipe. -The first baseline run was done in the summer... so horsepower loss might be even more. -The horsepower curve sure seemed to smooth out a bit...not sure if that was from the temperature difference or not.  | ||
| Fresnobuell |
I would be hesitant to draw any conclusions from such similar dyno runs done months apart. | ||
| Mrbikle |
I wouldnt be, the main concern though is the temperature difference. | ||
| Jng1226 |
Very cool, thanks for posting the results! As I mentioned in another thread, even if power was slightly DOWN, the significant weight loss over the stock pipe evens out the power-to-weight ratio between the two. My FMF Apex Carbon/Ti slip-on lost exactly 15.4 pounds over the stock can and the benefits of lighter handling are more significant to me than any slight increase in power that may have happened. With an even smoother power delivery, it appears you have achieved your goals of improving an already awesome bike! I want to smooth out my power delivery but that OhSoBee tune is just too expensive IMO... Hopefully EBR will have the Race ECMs available for reasonable prices. A shop near me has the software already and a good dyno guy ready to program. Jeff Jeff | ||
| D_adams |
AFAIK, the race ecm goes for around $700 or so. This is without any tuning and only a base map. Once a tuner has done one or two 1125's, the rest is just fine tuning and shouldn't take too long. You'd pay for the base tune that they know works and then tweak it to your bike. Maybe an hour or so? If you go with the race ecm, you'd be up over $1000 for the part and time. (Message edited by d_adams on December 10, 2009) | ||
| Froggy |
Pricing hasn't been announced yet for the EBR stuff. It could be a lot cheaper. | ||
| Fresnobuell |
the main concern though is the temperature difference Exactly. | ||
| Rockstarblast1 |
mybe im slow but how is the pipe run smother then the baseline???? looks total opposite to me | ||
| Ratbuell |
Read the bottom. HMF PERFORMANCE EXHAUST is written in blue. | ||
| Badlionsfan |
You really need the oh es bee tune for that pipe too. | ||
| Mrbikle |
is there any real gains to be had by having the open pipe tune instead of stock? | ||
| Fresnobuell |
is there any real gains to be had by having the open pipe tune instead of stock? As has been mentioned earlier, probably the weight factor is most beneficial with going to a slip-on. It's quite noticeable, even though the stocker is in about as neutral a position as possible. (Message edited by fresnobuell on December 10, 2009) | ||
| Torquaholic |
i believe what Mrbikle was referring to was the advantage of the open exhaust tune vs the stock exhaust tune available from the aforementioned tuner. My understanding is that the fuel and timing curves are adjusted to work better with the open exhaust. obviously, the results you have are pretty decent. you might pick up some lost power just by adjusting the timing curve slightly with your tuner program... save the money of purchasing another tune. don't know if I'm right though; you might want to contact the tuner to ask that specific question. | ||
| 1_mike |
I agree with Mrbikle. Yes, I have the HMF and...."that guys" computer program. While I haven't put it on any dynos, the one lap around the block told me it NEEDED M O R E fuel after the slipon installation. I'm doing the tuning by the butt dyno method, so it's taking me a while. The mid range seems to need the most additional fuel. In some of my iterations I've had it a little rich. I was almost to a point of finding a data log type method to finish things.... THEN, thru a bit of a screwup, I found my TPS was off. So, many weeks of tuning...down the drain...had to start all over. All the previous maps were no good. Now....I'm about back to where I was. Again...YES, some additional fuel and timing NEEDS to be added to your Slipon instalation...from experience. Mike | ||
| Mrbikle |
i wonder if you can upgrade or get a discount on the pipe tune if you have the stock tune already? | ||
| Xtreme6669 |
yea, its discounted to change to another loaded tune if you already have purchased one. | ||
| Carbonbigfoot |
Speaking in generic terms, of the aftermarket tunes that are available, tailored to the configuration of your system... Worth. The. Money. Do it. It's the cheapest mod per unit of performance (however you want to quantify that) available. R | ||
| Therealassmikeg |
A little of topic but a good place for it w/o another thread. This would be a good guide to have for you tuners or soon to be(s) published 2004 If it's already been covered elsewhere, Sorry. Mike G http://books.google.com/books?id=wC2dThrY2BMC&pg=P A27&lpg=PA27&dq=motorcycle+fuel+coolers&source=bl& ots=jeqWTPC_7c&sig=G1zbO3e74doc4euoBMbyTj4LfBw&hl= en&ei=Mt8kS_X-NovClAe9-JSCCg&sa=X&oi=book_result&c t=result&resnum=1&ved=0CA0Q6AEwADgU#v=onepage&q=&f =false |
