Derestricting

[Got-Busa?]

Don't even bother with a TRE. IMO, the GPS mod is the only way to go...

Does the GPS mod fix some of the lurching/hunting down low in 1-2 gear?

By looks of it only removes the speed limiter.

This problem is only on Gen-I bikes. You don't need a TRE for that on the Gen-II '08+ model. However, there are hundreds of opinions about this topic. Mine is that with a PC and PROPER tune there is no lurching down low. The lurching is from the bad tune from the factory.

If you truly test the TRE you will find out it is junk and you can get the same results from a .10$ resistor at RadioShack. Why pay $75+ for the same thing just to plug and play...

My recommendation is to do it right and get a PC for tuning and a GPS mod to remove the governor....PERIOD!

Again, not everyone is going to agree but this is what I have tested and found to work the best in ALL situations I have encountered for what I want to do with the bike.

 

[steve p]

A Turbo will do nothing for the Top Speed if you a) don't re-gear it or b) remove the governor via TRE/GPS.

Maybe the 08 is different in this way but as soon as I get a warm day I will let you know if it stops at 10,200. I am almost certain it won't. I have owned 3 turbo bikes and they all had restrictors on them. Prior to turbo they did stop at a certain rpm and from my understanding it is a timing retard thing that stops it. Turbo's don't mind the timing retard, they actually like it

 

[Macmotortrimmer]

Don't even bother with a TRE. IMO, the GPS mod is the only way to go...

Does the GPS mod fix some of the lurching/hunting down low in 1-2 gear?

By looks of it only removes the speed limiter.

This problem is only on Gen-I bikes. You don't need a TRE for that on the Gen-II '08+ model. However, there are hundreds of opinions about this topic. Mine is that with a PC and PROPER tune there is no lurching down low. The lurching is from the bad tune from the factory.

If you truly test the TRE you will find out it is junk and you can get the same results from a .10$ resistor at RadioShack. Why pay $75+ for the same thing just to plug and play...

My recommendation is to do it right and get a PC for tuning and a GPS mod to remove the governor....PERIOD!

Again, not everyone is going to agree but this is what I have tested and found to work the best in ALL situations I have encountered for what I want to do with the bike.

Cheers for that mate, my 04 just has bolt carbon tri-oval yoshis was really bad for it until i put the tre in

I have already got a full yoshi r-77 on order with pc3, so plan was sorta waiting until after the pc3 and full map to see about still needing the tre if the hunting is still there.

Since i don't really want to lose gear interactor.

Thanks

Yeah i have done the $0.10 resistor mod, did that on busa, gsxr 600, and gsxr 1000 for other family members,

 

[smithabusa]

Don't even bother with a TRE.  IMO, the GPS mod is the only way to go...  

The new 08 gps sensor is a little different than the old ones, I just modded a new one yesterday.
And good lord $110 for a TRE is outragous oh my god. I could do gps mods on brand new sensors for far less than that price without a core.

View attachment 1229719

 

[Eagle747]

I still don't know what the GPS mod is! Can anyone tell me? And does it screw up the gear indicator?

 

[Eagle747]

Foud a GPS mod at that Boostbysmith.com site. Looks like it still screws the sixth gear indicator. I'm wondering if there is a wiring solution to this - to pass tyhe correct signal to the gear indicator but the modified signal to the EMS? Any good auto electricians out there?

 

[smithabusa]

It makes the sensor output 1N23455, 6th gear outputs 5th gear, your gear indcator would do the same it would work fine up until 5th gear then not read any higher.

 

[smithabusa]

There is no way to do what you want.......that I know of. The gauges probably get their signal from the ECU so gonna be hard to do that.

 

[dadofthree]

I went two down for a theoretical 207, but don't have the motor to put my fat arse there.

 

[BikeMasterBahrain]

I asked before about this on other sites and a few dealers, what i was told is the G-PACK will de-restrict and not screw with the gear indicator. I have not got one yet but i was planning to do into that direction for removing the limiter.
LINK

http://www.demon-tweeks.co.uk/product....GP-S141

 

[smithabusa]

Looking at the pic it still plugs into the gps sensor, so i see no way you are going to output something different to 2 different devices that are both wired together.

 

[Burger King]

How do they do it with a GiPro? Don't they have to split the signal somehow do get their indicator to read 1 thru 6 gear when the mapping is 1,N,2,3,4,5,5?

 

[V8Pinto]

I don't have any lurching with the 08' but yes - I do need a TRE (or other limiter mod). The bike is used for land speed racing and I had exactly 5 days to prep it for the last race of the season including adding all the required safety mods (usually takes me two weeks). The limiter was the last thing I got to work on and that was 2am the night before leaving for the races. There was no way I was going to tear into the GPS with only 3 hours left...especially when I had the resistors laying there in my toolbox.

Working nights prepping a race bike sucks when you're on a deadline.

 

[smithabusa]

The Gi Pro shows the gear position, which is no problem to read a resistance and then output another. On the 08's you are asking for it to output 1 thing to the ECU and another things to the stock Suzuki gauges.

 

[Professor]

There is a possibility TRE could be built into the 08 that could function as a GI Pro does. I'd love to see high resolution scan of the 08 Wiring diagram. I'd almost bet the same wire that feeds from the GPS to the ECU also feeds the gear indicator. Regardless, I doubt the ECU feeds the instrumentation by a data buss that is becoming more popular in cars. It would take a microprocessor and some work, but if it is using the same raw feed it could be done. It would take quite a bit of R&D but I'm betting it could be done. It would not however just plug into the existing GPS harness like the 01-07 did. It would require at least one wire cut.

Even better would be hacking the ECU and making the programming change. The older 16 bit has been hacked. The 32 bit (02-07) has been accessed so it is only a matter of time.

Right now and for the next year or even longer the GPS mod is likely the best way to overcome the limit with minimal effect on performance and the gear indicator.

Greg"¦.. how much different is the install of the GPS on the 08?

 

[smithabusa]

There is a possibility TRE could be built into the 08 that could function as a GI Pro does. I'd love to see high resolution scan of the 08 Wiring diagram. I'd almost bet the same wire that feeds from the GPS to the ECU also feeds the gear indicator.  Regardless, I doubt the ECU feeds the instrumentation by a data buss that is becoming more popular in cars. It would take a microprocessor and some work, but if it is using the same raw feed it could be done. It would take quite a bit of R&D but I'm betting it could be done. It would not however just plug into the existing GPS harness like the 01-07 did. It would require at least one wire cut.

Even better would be hacking the ECU and making the programming change. The older 16 bit has been hacked. The 32 bit (02-07) has been accessed so it is only a matter of time.

Right now and for the next year or even longer the GPS mod is likely the best way to overcome the limit with minimal effect on performance and the gear indicator.

Greg"¦.. how much different is the install of the GPS on the 08?

Install is the same, the sensor looks a little different, but goes to the same place, same connector etc as the 99-07's

 

[Got-Busa?]

A Turbo will do nothing for the Top Speed if you a) don't re-gear it or b) remove the governor via TRE/GPS.

Maybe the 08 is different in this way but as soon as I get a warm day I will let you know if it stops at 10,200. I am almost certain it won't. I have owned 3 turbo bikes and they all had restrictors on them. Prior to turbo they did stop at a certain rpm and from my understanding it is a timing retard thing that stops it. Turbo's don't mind the timing retard, they actually like it

From my understanding once you click into 6th gear and rev to 10,200rpm on 01-07 bikes the ECU senses the rpm and combined with the GPS sensor shuts the motor down from accelerating any further. It will maintain that speed but will go NO faster.

I don't know the exact RPM that this occurs on the 08+ bike but it WILL happen. With stock gearing and a TURBO the same thing will happen. Just because you are adding more power doesn't mean the TURBO will motor through the electronic governor. The ECU is still going to shut you down weather you have 150hp or 450hp. Lots of people have tested this....


Talk to Greg (smithabusa) he is the one doing the GPS mods as well as JohnnyCheese. Greg will be able to fix you up with what you need if you want to go 186+ without messing with the Gear indicator in 1-N-2-3-4-5...

 

[Got-Busa?]

I asked before about this on other sites and a few dealers, what i was told is the G-PACK will de-restrict and not screw with the gear indicator. I have not got one yet but i was planning to do into that direction for removing the limiter.
LINK

http://www.demon-tweeks.co.uk/product....GP-S141

That just looks like a glorified TRE in my opinion. As other have said it doesn't hook to an outside source to trick the ECU about RPM based on the GPS. It have would to give you a false gear indicator in order to fool the GPS sensor...

 

[Commuta_Busa]

you probably could build something but it would be a biit more complicated. GPS to (special box)output 1 (with signal for 1,2,3,4,5,5) to ECU, output 2 (unmolested GPS signal 1,2,3,4,5,6) to gauge cluster. It would require the output from the ECU to the clusters gear indicator to be removed. If the output from the ECU that goes to the cluster is exactly the same as the input to the ECU from the GPS then it probably could be done. It would take a bit more work to figure it out though.

Just a thought...

 

[Spudley]

BikeMaster "B"...You Da' MAN !!!!

 Gonna do the GPS mod with a speedohealer for Christmas....that and maybe a new one-piece...time to start chasing Charles and Rich around the track...but the GPS mod is just for me and an open road !!!!!!