And is there a quick way to correct it? (i.e., Power Commander, exhaust, etc)

Just curious as to whether this was common knowledge.

Waht dip in midrange mate ? mines a bloody rocketship through the whole range.

Full system, pc3 with good map, and set of stacks.. Dip is gone.

Full system, pc3 with good map, and set of stacks.. Dip is gone.

Not only gone, but a monster through the entire curve!!

Full system, pc3 with good map, and set of stacks.. Dip is gone. :thumbup

Oh yeah, and hold on.

Full system, pc3 with good map, and set of stacks..

Is all that necessary or would just the pcIII and map do it alone?

The PCIII will not do it alone. You need the PCIII to go with the pipe, for the correct fuel map.

You need the PCIII to go with the pipe, for the correct fuel map.

I dont doubt that is correct, but how big of a player is the exhaust system playing in the air/fuel catagory? By the time the exhaust becomes a factor the combustion of air/fuel is over. Granted some exhausts flow better than others, which isnt that the exhausts role of getting the spent gases out more quickly?

The faster the air moves out, the faster the air moves in.

More air, more fuel = more power.

I gauged my add ons by how soon the front wheel came up on its own. In my case with the same take offs(others may differ). About 10,000 rpm is when it came up, with stock mufflers or A&R baffle kit, V stacks, removing EXUP valve. These give some little differences at 10,000, but mostly worked on the mid dip. but it was still there.

The big deference when I put on the full exhaust. The front end comes up at about 6,000 rpm.

I went from a dip in power, at 6,000, to a wheelie . Big power curve change.

Unfortunately The big dollar item dose the trick.

What causes the "dip" in midrange power on 04-06 R1s?

The EXUP valve restricts the exhaust flow.

Waht dip in midrange mate ? mines a bloody rocketship through the whole range.

UK bikes are different an US

its the 4-1 design of the collector

UK bikes are different an US

my bikes is EURO bike....also has the flat spot between 6k-7k rpm....
chnage to full system, pc3, v stack, the dip is gone.....:thumbup

my concern is the shape of the header......stock is 4-1...thats cause the dip....
aftermarket full system is 4-2-1......cure the dip....:thumbup

I sure the design of the 4-1 collector(which is the Exup Valve housing) was design to work or flow with the valve.

My mistake for pointing to one specific part. When its the whole assembly.

hows goes this sounds termi's slip on with y pipe, pcIII with v stack and k&n air filter that should be good anuff to sort out any power dip and give her more low end grunt dont u think

That will help a little on the mid. The slip-ons don't replace the Exup/collector

You need to do the full system to get a change in the power band.

I put on a Graves full system, and it really woke up my bike. :thumbup

hows goes this sounds termi's slip on with y pipe, pcIII with v stack and k&n air filter that should be good anuff to sort out any power dip and give her more low end grunt dont u think


use slipon only add a little gain in the mid end, and didnt cure the dip.....:secret:
before i buy my full system, i use akra slipon....use it for a month, and sell it....cant cure our R1 dip....:riding

its the 4-1 design of the collector


+ 1

I hope my dip is cured by filter, gutted cat , race baffles and pc3 w/ custom map.......Jus gut the cat get some race headers and do race baffles....Its ALMOST the same as a full system....save alot of $$$$....My friends got a full akra system on his 04 r1 its jus a LITTLE better..the only way I could tell cuz their both r1's...I guess if you race that would help....My baffles sound much better though!! haha I had M4 s/o didn't feel a diff though hope my pc3 helps....

I hope my dip is cured by filter, gutted cat , race baffles and pc3 w/ custom map.......Jus gut the cat get some race headers and do race baffles....Its ALMOST the same as a full system....save alot of $$$$....My friends got a full akra system on his 04 r1 its jus a LITTLE better..the only way I could tell cuz their both r1's...I guess if you race that would help....My baffles sound much better though!! haha I had M4 s/o didn't feel a diff though hope my pc3 helps....


:bs
when you buy race header, pc3, the muffle= thats not save $$$$...almost same price with full system...

i still don't understand....

i cannot for the life of me find this 'dip' in the midrange.... no matter how hard i try... i asked a few of the lads, nope, nothing... none who own an 05 and none who've ridden mine...

im sure you can feel it....just put the rpm at 6k....and gas it...between 6k-7k, we'll feel like no power there (something like lag, but not a lag, only happen at 6k-7k rpm)....after it reach 7k the power will come arise....
thats flat/dip....

im sure you can feel it....just put the rpm at 6k....and gas it...between 6k-7k, we'll feel like no power there (something like lag, but not a lag, only happen at 6k-7k rpm)....after it reach 7k the power will come arise....
thats flat/dip....


Are we sure we're not feeling a powerband type thing ? when mine hit's 9000 it hits the full power... and takes off....

but 6000-7000 i get nothing apart from smoothness.

i'm with you on this weeksy, can't say i've noticed a dip either?

Due to the tuning of Euro bikes to meet emissions laws there is a dip in the power curve at around 6000-7000 RPM on these bikes.

i have an o6 r1 with just 2brothers slipons and my bike has no power untill it hits 8,000 rpm or more it stinks. suzuki's have no low end lag at all thats how i want my r1 to run.

hows goes this sounds termi's slip on with y pipe, pcIII with v stack and k&n air filter that should be good anuff to sort out any power dip and give her more low end grunt dont u think

look for my thread about my new map. I posted a dyno run that shows the dip is still very much there with those same mods. That is after several smoothing runs. we are going to keep working on it but it will never go away till you get rid of the header/exup.

oh, for all the people who dont notice the dip it is because you have never had your bike on the dyno. I never really noticed it till i got her on the dyno...

i have an o6 r1 with just 2brothers slipons and my bike has no power untill it hits 8,000 rpm or more it stinks. suzuki's have no low end lag at all thats how i want my r1 to run.

Get a full exhaust and change your gearing. Your bike will really have the feel you are looking for.

im sure you can feel it....just put the rpm at 6k....and gas it...between 6k-7k, we'll feel like no power there (something like lag, but not a lag, only happen at 6k-7k rpm)....after it reach 7k the power will come arise....
thats flat/dip....

Are we sure we're not feeling a powerband type thing ? when mine hit's 9000 it hits the full power... and takes off....

but 6000-7000 i get nothing apart from smoothness.

What gear are you guys in when you're checking the so called dip?

Get a full exhaust and change your gearing. Your bike will really have the feel you are looking for.

yes u right...
my ex 05 R1 has full system,pc3. also has -1, graves stack....the dip almost gone, the bike become strong at every rpm.....
i think u must try -1 first instead full system, because -1 is very cheap mod compare full system....:)

What gear are you guys in when you're checking the so called dip?


no matter what gear we are....the dip is there, its no related with the gear, its the power band of the R1 that has dip...
we can see clearly on the dyno curve.....:)

no matter what gear we are....the dip is there, its no related with the gear, its the power band of the R1 that has dip...
we can see clearly on the dyno curve.....:)

oh ok because I can't find a dip on my bike, I got a 2006 R1 with Two Brothers slip-ons and a power commander mapped by my dealer, I guess that must have cured my dip :dunno

my 04 lags bad at like 4-5k rpms it kinda surges is this what everyone is talkin bout

i heard that getting your CO calibrated or something helps w/this alot

my 04 lags bad at like 4-5k rpms it kinda surges is this what everyone is talkin bout

Surging is a sign that your air fuel ratio is not good. if you mod your bike and dont get the A/F adjusted it will cause "surging". Get a PC3 and a custom map.

i havent modded anything totally stock except for mirrors and they only added 50 h.p so ..:dundun: but yea no mods yet

but i would like a pc3 would this still help the surge even w/out aftermarket parts

oh ok because I can't find a dip on my bike, I got a 2006 R1 with Two Brothers slip-ons and a power commander mapped by my dealer, I guess that must have cured my dip :dunno

I have yet to see an 04-05-06 R1 without a full ex loose the dip. Most of the time the dealers will load a map off of the dynojet website that closely matches your basic mods. This is a good start but never exactly right because each individual bike is different. This is where the dyno comes in. i was shocked at the improvement in power(+6 HP) and smoothness after I got a good custom map.
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but i would like a pc3 would this still help the surge even w/out aftermarket parts

Absolutely, some people say that a PC3 wont help you if you dont have mods/motor work. Those are people who dont do custom maps. if you just buy a PC3 and dont get a custom map it prolly wont help that much but if you custom map it you will definitely see your power delivery get smoother. Smooth power is useable power. It wont give you significantly more HP alone but it sure makes a difference. You could have all the HP in the world but if the power delivery isnt smooth the tire will break loose all the time. Not good if you like dragging knees.....

I have yet to see an 04-05-06 R1 without a full ex loose the dip. Most of the time the dealers will load a map off of the dynojet website that closely matches your basic mods. This is a good start but never exactly right because each individual bike is different. This is where the dyno comes in. i was shocked at the improvement in power(+6 HP) and smoothness after I got a good custom map.
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Well I'm telling you mang, I must be the lucky one on a million that got a good R1 from the factory :crash because it's smooth right on out to the teens on the RPM gauge :dunno

I think we are talking about two different things. Have you ever had your bike on a dyno? if you havent then you have no idea if the dip is there or not. For some people the dip is not really noticeable. I would have never noticed it if i hadnt seen the chart. It is simply a function of the 4-1 arrangement at the exup.

Well it's been a while since i last saw this thread, and i've still not seen this dip at all. HOwever, just out of interest i'm going to chuck it on a dyno in the next few weeks just to see if i can see it at all.

for the people that has not notice the dip , please dyno your bike....and u will see on the chart, after u see the chart, ride your bike, and feel the power, im sure u can notice after that....we talk about stock 04-06 R1....
no 04-06 R1 (stock) come without the dip....all of the 04-06 R1 has the dip at the curve..... :)

I am not talking about a stock bike i am talking about any bike that dosent have a full ex(different header without exup) and a PC3. Look at my most current dyno run. It shows how bad it was with the graves map off of the DJ website(+6 from graves, think how bad it was from a stock map???) and then how it is after several smoothing runs. We are going to keep working on it but there is really no getting rid of it totally. Oh, my bike has a PC3, micron carbon slips, termi y pipe, graves v stacks, BMC filter and a Krankvent. Even with all those mods it still has a dip, ARRRRGGGGG........