How does yours make power ?

[~Stef~]

GS that is, my 1100 has a noticable step at 5000ish rpm, every GS owner ive spoke to says theres makes flat even power from tickover up. I suspect its the one of pipe thats making the difference.

~Stef~

 

[Chris G]

Aye,

mine [1150]has a step at around 5k too, only changes are removed the internals from the cat and K+N filter


but then again mine is also a graphitan - so it's a bit special anyway

 

[ferguscawley]

Stef

Mine also has a noticeable surge in power around the 5000 rpm mark (well, about 4800 rpm really). This is with K&N, BB chip and remus revolution pipe. It still makes good power down low though but the considerable surge at 5K makes it seem like it is weaker in the lower revs.

A friends 1994 GS has a fatter midrange than mine but his top-end doesn't seem quite as strong. Either way, in roll-on tests on the open road he still can't keep with me

Ferg

 

[Paul Young]

Mine takes off at around 5krpm, too. I had it dyno'ed & this confirms that it coincides with a dip, then rise in the torque curve. This also coincides with a change in the fuelling map as mine runs slightly rich up to that point, then starts to weaken from 5krpm upwards.

 

[~Stef~]

The graph shows what im "feeling" whilst riding. Strong bottom end dips in the mid range then comes back strong towards the top end.

~Stef~

 

[Paul Young]

The important graph for me, was the middle one showing the fuel/air ratio. Ideally, it should be on or slightly below the red line as this is ideal/slightly rich. I was concerned that the Remus, Y piece, K&N plus Superchip may have been running weak but Dynojet said that it was OK. A Powercommander would help to smooth out the fuelling a bit more...... if they made one I emailed the US to see if one was being developed & they said they have no plans to. If we all try emailing their sales address with the same query, maybe they'll get the message that they're missing a good market....

[email protected]

Leaning it at around the 5krpm area should fill in the torque/power curves at the same point.