Non Motard - Timing Retard Eliminators

[B_Comp]

Hey all,

Ive looked thru the site and seen talk here and there about Timing Retard Eliminators (TREs) for Suzukis - So Ive decided to lay it all out plain and simple as Ive looked into all the options.

Mods if you want to move this thread to product reviews etc please do so Smile

Theory about Fuel injected Suzukis - Fuel injected Suzukis use a different Ignition map for each gear. The optimum map is the one used for 5th gear. Each gear below 5th uses a slightly 'dimmed down' map (by retarding the ignition advance) to make the bike easier/smoother to use for part throttle/riding around town. Suzuki use a Gear Position Sensor (GPS) to determine which gear the bike is in, and which ignition map to use.

Theory about the TRE - a TRE is a simple mod which plugs into the OEM wiring loom using OEM plugs to send the static signal of 5th gear (making the bike think its always in 5th - giving the optimum ignition map all the time).

The TRE will NOT increase max power output. Its purpose is simply to give a crisper igniton map through the range. I have seen the TRE graphed on the Dyno against no TRE thru each gear with a noticable difference in the lower gears.

Another reason the TRE is popular (especially for drag racing) is that it eliminates the factory speed limiter (in GSXR1000 and Huyabusa). Same theory as above - this factory speed limiter comes into being in 6th gear. Using the TREs static 5th gear signal means the speed limiter is not found.

Some quick facts about the TRE:

- The TRE is a direct "plug in" installation to your bike - no cutting or splicing
- The TRE has no effect at full throttle
- The TRE does have an effect at throttle openings up to 1/2 in gears 1 through 4 at ANY rpm
- The TRE will disable the speed limiter on the 2001 GSXR1000 and 2001 GSX1300R
- The TRE does NOT affect full throttle power... This has been verified on the dyno as well as on the road
- The TRE is for "race use only"
- The TRE does not comply with your warranty
- The TRE does not comply with federal emission and/or safety laws.
- The TRE will work in all these models:

1998 and up TL1000S
1998 and up TL1000R
1999 and up GSX1300R
1998 and up GSXR750
2001 and up GSXR600
2001 and up GSXR1000

(the TRE concept also works on Kawasaki ZX10Rs).

The theory of the TRE is quite simple, and a lot of ppl talk of building their own (for a small spend), and various different versions are available (some of them for unbelievable prices).

I assembled a few and promoted them at our recent GP Expo display and had an overwhelming response. So, you guessed it, we have decided to make them in bulk here in Melb using OEM plugs, and my first order arrived this morning.

I will be adding them (with all the above info) onto our site later this week, and Id like to offer them to forum members first (hence the thread).

Im happy to answer any Qs if you guys have any...

Chris

[Wobbly]

I always said those gutless gsxr1000's needed something to get them cookin :lol2:

[Sibbo]

Dont the upper gears have compensation for the ram air, so if you use 5th gear map for lower gears, it gets confused, as there is not the same amount of ram air?

A cheap fix for the tamed down lower gears for the carb SV650 (might be the same for the efi?) is remove the gear selection wires from the engine to the brain. This fools it to thinking it is in 4/5/6(?), when it is in the first 3 gears, as the map for 1/2/3 is really shit. I did this to mine and it would actually wheelie off the throttle in second, when before it would not.

Once the tank is lifted, it was a 2 min job and cost.....$0.00!! My sort of performance mod!

[Wobbly]

The ram air shouldn't depend on gear position sensor, I wouldn't have thought anyway because it depends on wind direction as well (ie. riding in a cross wind vs tail wind vs head wind). Not sure if they really care that much or if they run an air pressure sensor in the airbox (I'd be surprised if they're that sophisticated) and I'm not sure they jet a carb setup all that different for ram air or not (the carb setup is different, yes, but that's mainly to get the fuel bowl to run at pressure, generally by venting the overflows into the pressurised airbox)...

[B_Comp]

Some useful graphs...

This is Speed (in mph) vs Time:
http://www.bcomponents.com.au/externalimages/TRE-spd-time.jpg

and this is Power (in hp) vs Time:
http://www.bcomponents.com.au/externalimages/TRE-hp-time.jpg

[discobob]

I have had some experience with these on booth an 03 & 04 GSXR600, we did dyno runs with the std GPS and with the tre. We could not find any differences any were on the chart ( remember 600 only) in any gear. Then we tested the same way at eastern creek again I could not pick the difference. Im not saying they dont work but it didnt work on either 600. The only thing you need to achieve this is the right resister, but it would be easier to plug and play.

[B_Comp]

Your right Bob, its all about which resistor you use - I have had ppl telling me theyve made their own and nothing changed, only to find out they had plucked some resistance value from the sky...

Anyways we've done the research and testing on ours and have many happy customers :-)