ADVICE ON TRE FOR K8 VEE

[plumber02]

HI LADS,I suppose this question has been asked on numerous occasions so please go easy on me> I've got a k8 1000 strom with akro cans with no other mods, I'm looking for feed back on fitting a TRE only because it just feels like its being held back up in the rev range  also at steady throttle between 3500 and 4500 it seem to stutter like running out of petrol is this a mapping issue  do I have to get some sort of power commander or can the ecu be re programmed, thanks

[greywolf]

A TRE will remove the restrictions on rev top limits in higher gears. We're talking about speeds so high the chassis will not support them safely. While some claim improvement in lower gears at slower speeds, I've seen nothing but anecdotal reports of that happening and put little faith in them. Smooth running throughout the rev range is about good fuel mapping. A TRE does not remap fuel delivery. All it does is make the ECU "think" the bike is always in 4th gear.

[plumber02]

OK thanks, but my other question is do I need to install a power commander of some sort or is there an easier ( cheaper to be honest ) way of re mapping or re fueling

[greywolf]

If you can find somebody with an electronic converter box like a Yosh or Teka, it can be used to richen the mixture by rewriting the ECU's parameters rather than changing the numbers after they leave the ECU. You don't need to buy anything that stays on the bike but you'd need access to the box again to go back to stock values as well as knowing the values used in the change.

[Yoyo]

I've got open cans on my 06 Vee,  before fitting a Power Commander it stuttered a bit at lower throttle openings and felt 'fluttery' the PC3 sorted that out.  I had a discussion with the tuner running the rolling road about using a Yoshi box and his concern was you can only change large chunks of the fueling in the rev range where a PC3 can be altered every 100RPM, you can also have more than one map so if you want to put the baffles in you can change the map at a button press.  The PC3 was easy to fit and you can download a map without using a rolling road if you want to try that first.

[plumber02]

spot on,  I might have to go down that road at a later date but for now I 'm just looking for the least expensive route ,         spotted this on ebay    Suzuki-DL1000-VStrom-2008-Power-Jet-Fuel-Commander-Controller- ,     

[Yoyo]

The cheapest route is to use a Yoshi box, plug it in, change the parameters and unplug it, you just need to find someone local who has one! As Greywolf says you'd need to plug it in again to reset the ECU if you buy a PC at a later date.

[plumber02]

cheers thanks,

[Flanners]

I don't agree, my K7 was a complete dog in the low rev range as you have alluded to in your post. I fitted a TRE and it has transformed the bike. I am not a fool have been riding bikes for 25years and the TRE made the VStrom able to be used in the lower rev range or at constant low speed ie in traffic, before it was quite simply a dog. Before you spend money on Yoshi boxes and dyno runs etc buy one for 30 quid on ebay and fit it and see for yourself. The one I bought on ebay had a money back guarantee. 

I may be wrong but Greywolf may not be completely correct as I believe the fueling map is restricted at the lower end of the revs to pass the emissions that the UK/EU required which the TL lump struggled to do, basically strangling the engine, without the TRE IMO you can feel the revs/engine being 'held back', rumour is the Vstrom has different fuel maps for the first four gears? Does not do anything higher up the rev range as far as I can tell. Lots of riders have said they ride with more revs because of the issue without the TRE, personally on a big bike I don't wish to ride all the time at 4K-5K revs at 30mph!

I am glad I did not listen to all those who say the TRE does nothing, as firstly I don't believe that they are now correct and secondly I would of flogged the Vstrom as it was bollocks without it.

[hookie]

I also fitted a TRE which (along with a set of cans) improved the low/middle running. I later fitted a PC3 with the map from Dynojet that most nearly matched what was on the bike. I also disabled the oxygen sensor which was recommended. Interestingly, the map weakened the low/mid range mixture off and further improved the low end running and overall fuel economy. Ideally a map set up on a dyno with an exhaust gas analyser is best of all if you can get it done.

[greywolf]

There are restrictions in the lower gears too that a TRE eliminates. There is a disagreement on how effective a TRE is at helping with problems in lower gears. I've come to the conclusion from checking posts on the subject from people I've learned to trust that a TRE is not nearly as effective as a fuel remap in the lower gears. Also, it makes the higher gears downright dangerous if the rider does not keep the speed down below 120mph at the most.

[hookie]

With or without a TRE or remap a Vee will easily exceed 120mph if the rider is so inclined. Whether this is safe is a matter of judgement and/or opinion by the rider and he or she accepts the consequences of so doing. I've ridden the Vee at this speed and above on may occasions for long distances and up to an indicated 145 (not in the UK officer) with no concerns about it's stability or handling.

[porter]

I have a x-tre on my Veek. I've had it over 120mph a few times with no trouble even with a squared off rear tyre. I didn't like my Veek at low revs and small throttle openings and was going to sell up and go back to a triumph then I seen and heard of the tre here. I didn't want to spend the money a pcv would be, close to £500 with a custom map so I got the tre for 70 quid. Worked well for me.  I just got the new ecu fitted, bike is smoother all round. I refitted the tre and its smoother again. Only minus point is cutting the wire in the loom to fit it but you get over it!

[plumber02]

I've just gone for the aldi version ( does know when in neutral and I'll still have my o/d indicator displayed- don't know how unless there is a separate signal sent direct to dash??? ) of the tre £35 on ebay , I thought it was just plug n play one less the newer ones have a different setup, found a bloke then in dublin that can remap with some teka thingy, plus I made sure that I've got no fi light on , he assured me that he knows the wire to cut, mechanical stuff doesn't phase me ( mech fitter by trade ) but cutting wires on ecu"s remind me of that scene in lethal weapon-- cut d blue wire or red wire?????, so you can't wait to see the difference the tre makes also fitting a fork brace, next thing is springs front n rear so must try and get some feedback on where to and what to do there, still absolutely love that engine though

[porter]

On the new vstrom you must cut a black wire with a thin green stripe.  One end of the tre goes to the ecu end of cut wire, other to gear indicator end.  This way you get to keep the gear indicator,  you also need a live switched feed, took mine from the stop light switchwire from rear brake. In sayin that when I first got it I didn't want to cut wires so I just fitted it in, worked a treat just no gear indicator.  For 35 quid worth the try.

[plumber02]

hi lads happy christmas to all , just fitted my tre 10min job but blokes holy f..k what a difference its made , in all gears right the way through the rev range its like fitting a new engine it seems to rev a lot quicker right from 2500 could only go for a quick blast but the difference is night and day , I've lost my o/d indicator but not too worried ,

[TLPower]

Yep TRE makes a huge difference.

[greywolf]

Here's the story from the dean of Vee mechanics. Apparently EU Vees have an additional restriction in lower gears outside of my experience.

http://www.vstrom.info/Smf/index.php/topic,10828.msg118040.html#msg118040

[MartinW]

Pat - Your link states ... "Note: Only the engine of the DL1000 is power restricted. The DL650 has no restriction."

Doesn't the 650 do something similar with the secondaries in first and second, to restrict the power in those gears?

[greywolf]

Not that I know of. TRE's are useless on 650s. Their power output is too low to require restriction and they are cleaner burning for emissions purposes. The only restriction I know of on 650s is to prevent over revving at the red line.