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retrex
EFI questions
Originally posted by ArttuH
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Shhh.. don't tell earlfor, But I have injectors, pump, and FPR coming for one of the 550's in my house ;-)Last edited by Nerobro; 02-23-2006, 07:37 AM.You'd have to be crazy to be sane in this world -Nero
If you love it, let it go. If it comes back....... You probably highsided.
1980 GS550E (I swear it's a 550...)
1982 GS650E (really, it's a 650)
1983 GS550ES (42mpg again)
1996 Yamaha WR250 (No, it's not a 4 stroke.)
1971 Yamaha LT2 (9 horsepower of FURY.)
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Originally posted by retrexHi ArttuH, first I would like to thank you for an interesting post. I am looking at the two graphs depicted in the above link and I have a question or two regarding them. The second, or right graph, can you tell us what it is saying? It is very difficult to read. I assume it is a HP/Torque vs RPM. How does it compare to the baseline one on the left? Second have you ridden the bike with the EFI and what are your findings?
Left graph is stock bike, KN filter in air box, jetted, restrictive 4-1 exhaust. Right graph is with the EFI, very slight porting, home-made free flowing 4-1 exhaust. With these modifications maximum power increased by 14HP, from 95 to 109. Low- and mid-end power increased even more.
By this far I have ridden with the EFI about 20000 km and two seasons. Increased torque is very noticeable and nice in everyday riding. Fuel mileage is pretty much the same than with carbs, a bit more or less depending on tuning.
At this moment I'm installing a turbo on the bike. Let's see how it will affect
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