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#7 · (Edited)
Mr.Bolt-On said:
The Fci vs the ESR intake. 4.5 hp!!
Click to expand...
Nice intake system....however; the run comparison is not fair comparison of the two intakes. Looking at the Dyno chart A/F ratio, the FCI is running almost a perfect A/F ratio for a 250R and the other intake system is way lean. Set the A/F ratio equal for both (richen or lean accordingly respective to each intake system) and you will see the HP gap between the two intake systems narrow considerably.

Now, I can tell you from experience the FCI will out run the other intake even with both A/F ratios being equal, however; the gap will be in the 1-1.5 HP range favoring FCI on a 250R.

Carlos
 
#8 ·
acecarlos said:
Nice intake system....however; the run comparison is not fair comparison of the two intakes. Looking at the Dyno chart A/F ratio, the FCI is running almost a perfect A/F ratio for a 250R and the other intake system is way lean. Set the A/F ratio equal for both (richen or lean accordingly respective to each intake system) and you will see the HP gap between the two intake systems narrow considerably.

Now, I can tell you from experience the FCI will out run the other intake even with both A/F ratios being equal, however; the gap will be in the 1-1.5 HP range favoring FCI on a 250R.

Carlos
Click to expand...
Carlos i messed up and posted the wrong sheet. That was a kfx 450. I would agree on most cases about the AFR. On this case we didn't use the AFR sensor at all. On two strokes we tend to do more plug check. This particular bike we tuned for a bit using the ESR intake. we couldn't get it to make any more power than it was no matter what main we through at it. Let me post the write dyno sheet. The FCI changed the rpm curve all together. more over rev which you can't get with just running. You seem local if you have bike bring it buy FCI i will throw it on for you to show you.
 
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