2007 S4R with full termi kit - horrid gas mileage - any advice?

[Gus]

Hey,  I've got an 07 S4R with 2100kms and a full termi kit with DP ecu and i'm getting maybe 60 miles a tank (100kms for us Canadians )  Has any one else had problems like this?  The mechanic here is kind of stumped so any advice where to look would be great.

Thanks

[Howie]

CO trim and TPS set correctly?

[ducpainter]

Hey,  I've got an 07 S4R with 2100kms and a full termi kit with DP ecu and i'm getting maybe 60 miles a tank (100kms for us Canadians )  Has any one else had problems like this?  The mechanic here is kind of stumped so any advice where to look would be great.

Thanks

I know a guy that had the similar set up on an ST3 and was getting similar results.

A complete set up brought his mileage up to 35mpg.

[blue tiger]

My S4RS with full system and ecu/airbox mods gets about 31 on the highway and about 29 in town. Low fuel light usually comes on at around 70 miles. That's the way it is. It runs great and sounds awesome. I wouldn't worry to much about it.

[He Man]

Hey,  I've got an 07 S4R with 2100kms and a full termi kit with DP ecu and i'm getting maybe 60 miles a tank (100kms for us Canadians )  Has any one else had problems like this?  The mechanic here is kind of stumped so any advice where to look would be great.

Thanks

I dont have an S4R, but here is the biggie quesiton. Where do you ride, how do you ride? how many miles?
I have an S2R1k, i bought it with 4,400 miles and was getting about 75 miles to the tank. 80% city stop go lane split. i was only getting about 100 miles to the tank on the highway. did my 6k (minus valves) and the bike was getting about 80miles to the tank. I started shutting of my engine at lights and got 90miles to the tank then just about 200 miles ago, all of a suddden im getting about 100 miles to the tank city, almost 130 highway. Im not sure if it was the oil/fluid change or hte bike finnaly broke itself in.

I do a lot of hard accelerations, occasional wheelies, alot of light to light sprints, and alot of revving at lights  and when lane splitting.
By tank, i mean until htel ight turns on, which is a 2.5 gallon fill up for me.

[Gus]

My S4RS with full system and ecu/airbox mods gets about 31 on the highway and about 29 in town. Low fuel light usually comes on at around 70 miles. That's the way it is. It runs great and sounds awesome. I wouldn't worry to much about it.

that's 70 miles though,  I'm getting 70-80 kms which is about 35-40 miles before my low fuel light comes on.  It's going into the shop right away though and hopefully it'll come out a bit better.  It seems that no matter how i drive it I get the same shitty mileage,  i rode it like i stole it for a tank and then babied it for the next and it didn't change.   

[R_usty]

Hey,  I've got an 07 S4R with 2100kms and a full termi kit with DP ecu and i'm getting maybe 60 miles a tank (100kms for us Canadians )  Has any one else had problems like this?  The mechanic here is kind of stumped so any advice where to look would be great.

Thanks

My S4RS now has 17,500 k's on it with DP ECU and full Arrow system. I get 120 klms a tank city riding but on long country rides I can get up to 180 klms before the light flicks on - I have not yet managed to get 200 klms out of it but maybe one day (when I get a bigger tank  )

Seriously if you check the DML (RIP) you will find many threads on this. It is a bummer but high performance means shit milage....

[brad black]

It is a bummer but high performance means shit milage....

you should be able to get good economy out of one of these engines, even working it hard.  it will drop around town, but tuned properly it should still get much more than that.

i'd say it's a fuel mapping issue - just too rich, bad main to offset relationship, too lean in the idle area causing them to be set too rich by dealers doing it the "right" way, too rich in the cruise area, poor set up on the bike used to develop the mapping, etc (there's lots of possibles here) - or lack of spark advance issue.  the mv brutale 750 use a heap of fuel and it's predominately a spark map issue.

try winding the air bleeds out a half or full turn or having the idle mixture set to 2% CO.  might help.

[DuciD03]

Hummmm .... not good; somethings off; hows about a power commander with the termis?  Thats a guess; theres more knowledgeable one here that I.

I started a thread on gas milage just for this reason; so simple but so telling; I do know that somethings out mising or you need a through diagnostic .... termis are recommended for Duci's so the dealership should be able to help; thread below ...

post the fix when you get it; it an intresting problem-o.  Cheers D

Post: tec; Re: gas miage pool & question: ....yes there is many factors the effect MPG preformance; but generally it already looks like theres a range of between 35-45 MPG.  Milage is a good starting point to identify the mechanical heallth of an engine.  Below someone identified that a valve adjustment can make a significant difference in milage.  Keep em comming, I'll try to do a summary in a week or 2.

[bigiain]

i'd say it's a fuel mapping issue - just too rich, bad main to offset relationship, too lean in the idle area causing them to be set too rich by dealers doing it the "right" way, too rich in the cruise area, poor set up on the bike used to develop the mapping, etc (there's lots of possibles here) - or lack of spark advance issue.

+1

I'd love to see one of these badly behaved bikes do a set of dyno runs including A/F ratios at 5, 10, 20, 40, 60, and 100% throttle so we can see exactly what's going on there...

big

[Big T]

Here is my Dyno of the 07 S4RT.

The RED is with the Zards & Standard ECU.

The BLUE is the Zards, DP ECU & Open Airbox.......

Power increased and smoothed out and sucking more fuel......

[hypurone]

Your CO must be set too high. Mine was setup at the dealer after install and it was still too rich. Mileage was low and the bike was a bit chuggy down low and on tip-in. I had them reset it and drop the CO .5% and the mileage came back. I still wasn't happy with the throttle response (yeah I'm picky) so I added a PCIII and dyno'd it. P E R F E C T!!  Not to mention the addition of 6 ponies and 8 ft lbs of torque... 

[DoubleEagle]

Sounds really low to me. I have an S4Rs w/ the full Termi Exhaust ,DP ECU, Open Airbox and 14T Front Sproket and I ride it hard in the hills. I usually get at least low 30s mpg .Don't know about Highway since I don't hardly ever ride any Highways.

[Gus]

Ugh, geting frustrated    I called a dealer in another province here that apparently is renowned for motorcycle tuning and the guy said to me, I quote.  "Yeah, well if that's how much gas your bike uses, that's just how much gas it's going to use.  There is nothing we can really change."  For make the beast with two backs sakes, just useless.  I even explained to him there are other guys in my area with the exact same bike who are getting double the mileage I am and still nothing.

Thanks for all the suggestions though,  I've been at my dealership here and hopefully they try a few of them.

[morganf]

For what it's worth....

I just did a road trip this last weekend from Portland to Seattle, mix of backroads and slab. I go about 235lbs fully geared and got about 38 MPG on avg on my '07 S4Rs with a 14t sprocket, Spark exhaust, DP ECU, chopped air box and K&n. Spent a lot of time around 80 - 85mph on the freeway riding like a normal civilized person and keeping with the flow of traffic.
Duc Seattle tuned it and she's got 0% ridabilty issues, no chugging, poppin, nothing. Just 998cc of buttery smooth goodness.