FREQUENTLY ASKED QUESTIONS
DYNO NUMBERS
Q. I've read elsewhere that some tuners are seeing 150HP+ from 599cc at the wheels with their EFI - MFI - carbs...why are your numbers so low?
A. Great question, I won't go into a huge amount of detail here other than to say, HP numbers without a known reference have no meaning at all...as in none! The most obvious reference when talking about a particular well tuned modified motor in good condition is how does it compare to the same brand and type of well tuned "unmodified" motor in good condition?
For example if a freshly built 599cc motor makes XXXHP with a short, peaky powerband, but then on the same dyno - same day a freshly built "modified" 599cc motor shows a nice wide powerband with 10% more HP, then you're on a winner with the "modified" motor. In most cases though you'll realistically find that the "unmodified" motor when tuned correctly probably makes within 4% to 6% of the properly modified motor. I've tested plenty of "modified" motors that perform WORSE than a nice stock one.
We have a "reference motor" that we run throughout the year to give us an accurate baseline to compare against not only other motors but also to confirm that the dyno is repeating like it should. In the past, we have had properly modified and tuned 599cc carb motors winning all over the country that consistently make around 125-128HP on our dyno and that's what our benchmark is. Currently our GEN2.1 EFI is averaging between 133-139HP (depending on cam timing and configuration) with a usable rev range that is approximately 20% wider, along with more peak torque and higher average outputs.
We also have had more than a couple of "super tuned140+HP" motors that have not even broken into the 120's on our dyno. To be fair our dyno is probably a little hard to impress but on the flip side there must be plenty of engineers in Japan amazed at the fact that considering all their knowledge, experience and state of the art testing facilities there are still people out there working in their spare room at home who can find another 30HP that they couldn't, even though sometimes the rules they are working within allow almost no modifications at all?
All I'm saying is it's impossible to make a comparison at all with out a reference to compare too. Always compute it back to a percentage of gain or loss to a known, as in performs well on the track reference.
We don't use our dyno as a sales tool (lots do) we use it to constantly refine and develop our motors and our dyno customers motors. We calibrate with a very accurate and repeatable system. I'm not saying our numbers are right and everyone else's are wrong, I'm just saying the numbers are what they are.
DYNO NUMBERS
Q. I've read elsewhere that some tuners are seeing 150HP+ from 599cc at the wheels with their EFI - MFI - carbs...why are your numbers so low?
A. Great question, I won't go into a huge amount of detail here other than to say, HP numbers without a known reference have no meaning at all...as in none! The most obvious reference when talking about a particular well tuned modified motor in good condition is how does it compare to the same brand and type of well tuned "unmodified" motor in good condition?
For example if a freshly built 599cc motor makes XXXHP with a short, peaky powerband, but then on the same dyno - same day a freshly built "modified" 599cc motor shows a nice wide powerband with 10% more HP, then you're on a winner with the "modified" motor. In most cases though you'll realistically find that the "unmodified" motor when tuned correctly probably makes within 4% to 6% of the properly modified motor. I've tested plenty of "modified" motors that perform WORSE than a nice stock one.
We have a "reference motor" that we run throughout the year to give us an accurate baseline to compare against not only other motors but also to confirm that the dyno is repeating like it should. In the past, we have had properly modified and tuned 599cc carb motors winning all over the country that consistently make around 125-128HP on our dyno and that's what our benchmark is. Currently our GEN2.1 EFI is averaging between 133-139HP (depending on cam timing and configuration) with a usable rev range that is approximately 20% wider, along with more peak torque and higher average outputs.
We also have had more than a couple of "super tuned140+HP" motors that have not even broken into the 120's on our dyno. To be fair our dyno is probably a little hard to impress but on the flip side there must be plenty of engineers in Japan amazed at the fact that considering all their knowledge, experience and state of the art testing facilities there are still people out there working in their spare room at home who can find another 30HP that they couldn't, even though sometimes the rules they are working within allow almost no modifications at all?
All I'm saying is it's impossible to make a comparison at all with out a reference to compare too. Always compute it back to a percentage of gain or loss to a known, as in performs well on the track reference.
We don't use our dyno as a sales tool (lots do) we use it to constantly refine and develop our motors and our dyno customers motors. We calibrate with a very accurate and repeatable system. I'm not saying our numbers are right and everyone else's are wrong, I'm just saying the numbers are what they are.