Verdict on TRE Removal!!

Is this something to get done at a shop. My riding is a very easy split. Either 60-85mph on open motorways. Or filtering at low revs. Would it make filtering easier, or would the bettr throttle response make it more difficult to gently use the trottle in those cases?

Stu

Originally Posted by chewy22

NOT dissing you coombest thats a very good report you are probably right about the 1st 5 gears not sure why it has been done that far up the scale. With the timeing set out on the OE set up that will explane the fuel consumption been higher.But you still dont get any more BHP just better throttel responce.

I believe that actually you get more BHP at the rev range it is now not affecting becasue of the mod.Retarding the time does lower the bhp aty a given rev reange so by removing this you in effect get more horses at that point in the rev range. As for throttle response...I don't think so.Just doesn't retard the ignition so you gets what you ask for without the ecu saying "me?At this rev range?With my reputation? "

"Suzuki has deliberately programmed the ECM to alter the ignition timing to remove a little bit of torque in the lower gears to protect the rider from the bike's full awesome power! What they've done is to "retard" the timing, or make the spark occur TOO LATE, on purpose, so that maximal torque is NOT acheived.


The "TRE" removes this "retarding", to set the ignition spark back to the place where it will give maximal torque, Just before top dead center. Thus you have "eliminated the timing retard". With this mod you will notice more power possible in gears 1, 2, and 3. You'll notice SMOOTHER performance of the bike without all that jerking and engine braking in those lower gears and also be unleashed on a machine which has had its upper electronic speed limit disabled."



how to build your own go here http://home.iprimus.com.au/stevebm/tre.html

Originally Posted by chewy22

The "TRE" removes this "retarding", to set the ignition spark back to the place where it will give maximal torque, Just before top dead center. Thus you have "eliminated the timing retard".

Funny - I always wondered what retarding the timing meant - I always thought it was something that would make you late wherever you went!

Originally Posted by chewy22

With this mod you will notice more power possible in gears 1, 2, and 3.

As I have already pointed out, on the K3> bikes, gears 1, 2 ,3, 4 & 5 have their timing retarded!

Originally Posted by chewy22

You'll notice SMOOTHER performance of the bike without all that jerking and engine braking in those lower gears

Indeed!

Originally Posted by chewy22

and also be unleashed on a machine which has had its upper electronic speed limit disabled."

I think you'll find that there is no speed limiter on the SV650!
I may be mistaken, but I've never been able to get mine anywhere near 186mph!!!!

I will still stand by my point that the bike is a lot less responsive and is definitely slower.

It may also have something to do with the fact that my bike had the fuel injection re-mapped when the TRE mod was in place, so it would have been made to run at it's best with it in place. It certainly pops and bangs more dropping back down through the gears now without it in - it hardly even let out a stifled burble after the re-map!

Coombest wrote

it hardly even let out a stifled burble after a Kebab!

If only you could say the same for Tim

Tim and I swapped bikes today .I have ridden his bike before but it is defintely slower now the tre mod is not in. Seems fine at the top of the rev range but slower than mine up until 7.5k revs. Bizarre

Coomest, Do you have any plans to put the TRE mod back in? I have taken out mine as I mentioned in this thread. I took it out because I read on another thread on this site that it may/will damage the bike.
I prefered it when it was in, but I don't want to do any damege.

Originally Posted by chutz

Tim and I swapped bikes today .I have ridden his bike before but it is defintely slower now the tre mod is not in. Seems fine at the top of the rev range but slower than mine up until 7.5k revs. Bizarre

It was bizarre for me as well. Sitting on your bike and shocking myself with how much better it accelerated was unexpected to say the least!
When I was riding yours, following you on my bike, I had to keep shutting of the throttle in fear of running into your backside! (there y'go - something for you to mis-quote! )
Mind you - mine does sound luvverly doesn't it!!

Originally Posted by dclifford

Coomest, Do you have any plans to put the TRE mod back in? I have taken out mine as I mentioned in this thread. I took it out because I read on another thread on this site that it may/will damage the bike.
I prefered it when it was in, but I don't want to do any damege.

Ooooooh yes - it's going back in post haste! I couldn't be bothered to fit it today but it will definitely be going back in tomorrow!

I can't imagine that it would cause much in the way of damage... People have been doing the exact same thing to TLs for years and also most other fuel-injected Suzukis. I think there would be some instances of people having had problems published on the web if anything had gone seriously wrong!

I am no expert but to my knowledge the main reason the bike as standard is retared in the first five gears is to pass both noise and polution emissions test so I can see no reason why it will damage the engine.Seeing as it simply means the engine will run the same in all gear rather than just the sixth i would guess that no harm will come of it.