sometimes bigger isnt always better..
Dyno Results
I see some results are out but no comments yet ?
Is the the 3rd graph line on each readout the A/F ratio ?
If so could you say that the Trinity runs lean at both low and high revs - or am I just a chart reading fool !
Good to see there are no bad pipes out there yet as I,d be pissed if I had bought brand X and it was crap !
Is the the 3rd graph line on each readout the A/F ratio ?
If so could you say that the Trinity runs lean at both low and high revs - or am I just a chart reading fool !
Good to see there are no bad pipes out there yet as I,d be pissed if I had bought brand X and it was crap !
21 - 40 of 43 Posts
Just a Q, were the tests done on a load dyno? If not, the AFR will be a bit on the lean side. Our testing in the field showed 13's for AFR.
Loading the machine does several things:
It allows the machine to "settle" to where a more accurate reading can be taken and the load on the machine makes the engine work more like in real track conditions.
The other thing that makes a BIG difference these days is quality of fuel.
When I was at SuperTrapp I did a test of 6 local gas stations fuel and the difference between them was good for 5 horsepower !!
Neat stuff eh..
Loading the machine does several things:
It allows the machine to "settle" to where a more accurate reading can be taken and the load on the machine makes the engine work more like in real track conditions.
The other thing that makes a BIG difference these days is quality of fuel.
When I was at SuperTrapp I did a test of 6 local gas stations fuel and the difference between them was good for 5 horsepower !!
Neat stuff eh..
Great question. I'm pretty sure DASA's dyno is not a loaded dyno. And I was the same with my full yoshi.... around the 13:1 A/F ratio range........Just a Q, were the tests done on a load dyno? If not, the AFR will be a bit on the lean side. Our testing in the field showed 13's for AFR.
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HMF's is up, really hard to see... but once they are all finished I'll combine them into one so it will be easier to read.
HMF's is up, really hard to see... but once they are all finished I'll combine them into one so it will be easier to read.
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Hmf made a little more hp but lost to the yoshi in tq
IF you look in the upper right corner of the HMF it says ENGINE TQ, and on the others it says TOTAL TQ. I will post all new sheets with actual A/F graphs , Engine TQ numbers and all color coded corectly one we are all done. I will also take the best 3 pipes and put those 3 on the same graph. Trust me when i say HMF as of now is our leader. It pull on the bottom alot harder then the rest and has the same peak HP.
FUELATV
FUELATV
Dan uses a Mustang Dyno if Im not mistaken, which is a load dyno, if Im not mistaken again??
the yosh got more torque and has the same peek hp as the hmf, but the hmf is better low mid hp...
overall i would prefer the yosh i guess but both are almost equal, depend on ur choice, more torque?? or more low mid hp?
overall i would prefer the yosh i guess but both are almost equal, depend on ur choice, more torque?? or more low mid hp?
If you put both on the same graph the HMF beats the yoshi hands down all of the way through the power band. As you will see once everything is done.
FUELATV
FUELATV
If you put both on the same graph the HMF beats the yoshi hands down all of the way through the power band. As you will see once everything is done.
FUELATV
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Sweet, I knew I wasn't making a mistake by getting the HMF before the shootout was complete. As I said in an earlier post the HMF entries always finish right at the top in every pipe shootout. I have now ridden an LT-R with both the Yosh system and the HMF and you can really feel the difference down on bottom and mid. The HMF gives the bike the missing punch down low that you feel when you ride a piped and properly jetted YFZ.
Welcome Dan! Glad to see you found your way here...thank you so much for all the time you are spending on this! You will save many LTR owners money by allowing them to pick the exhaust system best tailored to their riding style and performance requirements...my hat is off to you!On my dyno I see that the suzuki runs about 14 to 14.5 AF with a crbm and no air filter lid and baffel out.
I have not seen any signs of engine problems. The engine was tested to be ran with those mods so I feel confident that there will be no engine durability problems.
The AF on the dyno charts were not scaled with the HP and TQ scales There will be one posted with the correct ratios soon. They range from 13.5 to 14.5 AF ratio across peak HP.
I wasn't here when the dyno charts were printed. And the Force Identical scale button was not clicked.
Sorry for the mix up guys.
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so all of these exhaust besides the trinity are fine to run with just a crbm. You would only need a programmer if you go with an intake?? So I am wondering what the purpose for yosh PIM is if it was designed for the full yosh but the crbm works fine?? Dont know if anyone else is wondering the same thing.
I believe Fuel posted he was going to do a test with the best pipe and the PIMM to see the difference over the CRBM. Most users of the PIMM have reported a performance GAIN over the CRBM.so all of these exhaust besides the trinity are fine to run with just a crbm. You would only need a programmer if you go with an intake?? So I am wondering what the purpose for yosh PIM is if it was designed for the full yosh but the crbm works fine?? Dont know if anyone else is wondering the same thing.
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The way I understand the CRBM is "fine" with a full pipe but the PIMM will add even more performance...
So the pim must adjust more than just fuel. Spark advance must be adjusted to improve performance with the same a/f. If this is the case then the pim is worth buying. I guess we'll have to wait and see how much it gives. thanks.
I ran my quad for 2 months with the full yoshi/crbm combo and it ran fine. I bought a PIM and rode it over memorial weekend and burnt the spark arrestor out of the pipe in 1 day. Im still waiting to here back from yosh to see what they are gonna do to fix this. In the first pic you can see how the screen from the arrestor got caught in the end of the pipe and discolored the logo. In the second you can see a piece of the arrestor completly choking off the exhaust. Later on that piece flew out and thats what the 3rd pic is.So the pim must adjust more than just fuel. Spark advance must be adjusted to improve performance with the same a/f. If this is the case then the pim is worth buying. I guess we'll have to wait and see how much it gives. thanks.
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3
The trinity is fine as well, they said it wasn't a loaded dyno so the A/F ratios are a tad higher than normal.so all of these exhaust besides the trinity are fine to run with just a crbm. You would only need a programmer if you go with an intake?? So I am wondering what the purpose for yosh PIM is if it was designed for the full yosh but the crbm works fine?? Dont know if anyone else is wondering the same thing.
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I will have all of the dyno sheets ready to be posted this weekend. The A/F will be corect and i will lay the top three pipes on on graph.
FUELATV
FUELATV
that is crazy what happened to your exhaust. So you will let us know what they say about it. hopefully they will replace everything for you.
It sucks, I've got to send my pipe and PIM back to Yosh, we're not sure if the pipe was bad or the PIM is messed up. A chunk of the screen was caught in the end of the pipe and made a hot spot burning the rear of the pipe up. I just hope I get a new pipe and PIM soon so I can go riding.that is crazy what happened to your exhaust. So you will let us know what they say about it. hopefully they will replace everything for you.
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At least someone ELSE besides me is having all the fun for once
21 - 40 of 43 Posts
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