XTRE....Good or Bad ?

[2busa]

So when you put a pwr cmndr on the bike then tune it are you tuning just a single map?

No. The ECU keeps changing maps, but the PC layers over each map. See, internally in the ECU, they use a single map builder. Then the machine takes over and from that base entry, the 'map machine' [for a better word] follows that parameter to all the other maps.

Then with TRE/XTRE it takes it to only one map? ???/QUOTE] No. The PC is after the ECU. That means, it captures the millisecond coming out of the ECU to the injectors. Then, this time span enters the PC and then you add more 'milli' to keep the injector open longer to make it richer. So, you are basically layering over the base map inside the ECU.

The map machine takes over again. And when you hear someone cry 'foul' that their plugs are sooty, someone made a map that caused the internal machine to default to a low lean signal or a high rich signal... All being you created a PC map that set the parameters where the machine did not compute. And when the machine cannot read the the parameter, it defaults that (+/-) fuel trim, where use is crying to your buddies for another map on the internet.

 

[Blanca BusaLess]

Uh Ok. Mine reads 4th when started then goes to whatever pos it is in.
I like it now don't know enough to say yeah or nay on it.

Would you like to know how many parts there are in an M249 ?
Maybe how to headspace a MaDeuce ?
I can do that, this XTRE , map, tune, all past me !

 

[OB_Boss]

Removal of timing retard in lower gears to me is the main reason to run a TRE .......... before flashing was available one hastens to add here. Removal of this timing retard will certianly give sharper throttle response (after all thats why it's there to dampen and save some from themselves in a flip over) and smoother more lineal power delivery on the road. Ignition retard kills engine performance ................. thats an engineering fact not a personal opinion

 

[2busa]

Uh Ok. Mine reads 4th when started then goes to whatever pos it is in.

Pretty common to see 4th and/or 5th. But once you shift through the gears and hit 6th, the 6 locks. Besides, once you see 4th locked in the window, the GPS/fail-safe code is set within seconds. You feel no difference in 4th as you do 6th meaning.

 

[Blanca BusaLess]

No sorry mine reads fourth only for the immediate second it starts then ALL gears read correct. When I go into 6th it shows 6th but when I downshift it goes to whatever gear I choose. My gps works fine. no fail safe codes or anything. Just shows 4th for only a second and then it is like I never installed it because all things work fine.

 

[Busakid08]

Save your $$ unless you are racing I rekon - been there done that for years and years - done teh reflash as well - it comes down to ego on the steet

 

[busakidaz]

Is this a TRE?

 

[Shean]

who said there's no need to go that fast. 170 is cruising.

 

[Blanca BusaLess]

This is what I have and like I said I had pwr comndr and XTRE installed same time so I can't really tell which one made the diff I am now in love with ?

HealTech Electronics Ltd. - Makers of the SpeedoHealer, GIpro and X-TRE -

If you look at their site regarding this unit it seems a good idea. Understood it is on makers site and of course they will say it works. The dyno charts seem interesting regarding K8 Busa. ???

 

[RatherBusa]

Not sure about TRE's in general, but the XTRE no doubt made my throttle more touchy... at least felt like there was more power off the line. In terms of quantifiable power however, who knows. I prefer the sensation over the stats any day, myself.

I liked the feeling of it once I got it on, but I appreciated what I perceived to be a more balanced acceleration once I decided to take it off.

Never got beyond 160 with or without it, so as far as the actual TRE function... I am sure it prolly works.

Definitely went to the pump more with it on.

 

[dadofthree]

I think you said you were interested in making power. With the Gen II you might consider a Bazzaz v. PC. My understanding is that one unit controls all eight injectors where the other only controls four.

 

[2busa]

Not sure about TRE's in general...

So the myth is squashed:

Generally...

1. A connector fell out of the other connector = TRE
2. A wire fell out of the connector = TRE
3. A short to a wire without blowing a fuse = TRE

Notice how you can cause the same effect 3 different ways? It's called:

1. Fail-Safe = No matter watt
2. Fail-Safe = Generally, any computer bike using a GPS.
3. Fail-Safe = No matter what ohm resistance you use or just pull the wire out of the loop will have the same effect = Generally.

Kind of why the J-Cheeze man did not comprehend the basics is pull the clutch out and solder the GPS? Well, is that not a basic short to the GPS? Pick one of 3 variables and dare you go, the Cheeze caused the effect one of 3 ways.

Fuel injection is way to easy, basically/generally speaking. Know your 3-variables and all those TRE units default to the same exact "Fail-Safe." Meaning, you have reached a dead end no matter what trick resistance you think up. It is called a short to one signal and not a varied signal like a rheostat; like a dial type wall switch that dims the room. You more or less pinged the wall switch with an On/Off switch like the light runs the full 100w out of the bulb = Fail-Safe; where a dimming light switch would vary the bulb; or say it 'runs in the analog' with it's varied input that the ECU recognizes. But you set the single resistance ping of any ohm size you use, she defaults to the, "Fail-Safe" as it reads a single ping, not the varied (analog) ping it was designed to read.

 

[chunk1340]

all what things carry one map? Sorry not following you? The ecu has seperate maps for each gear for both timing and fueling. a power commander just alters what the ecu is already doing based on tps and rpm. Putting a TRE on your bike forces it into 5th gear all the time, so you are now running 5th gear mapping at all times except neutral. Thats why I dont like TRE's.

Excuse my ignorance, but does running fifth gear mapping matter to a drag racer for example who will (should) be at full throttle for all of the run?

 

[Got-Busa?]

TRE of any form on a Gen-II = JUNK!

 

[smithabusa]

5th gear all the time will make you rich in the lower gears, jurting 1/4 mile performance
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[2busa]

^^^^^^ WATT?

From the factory service manual, page 4-31 (1999-2001) reads:

Gear Position Signal: "Gear position signal is fixed to 6th gear."

I still do not understand how you can claim 5th gear when the manual claims 6th, and the ohm resistance being the lower you go, the richer the set. If you look at the (GPS) resistance reading of each gear, the resistance drops as you go higher in gear.

My question is that if you are running at max mph; at the ragged edge of the limiter, the GPS fails, how would the factory go back a gear (5th) and lean out that bike? You never know when a sensor fails and at what speed. So would you design it to run 'safe' (fail-safe) if say you were to design a safety system?

Again, no matter the build of the TRE; with whatever resistance Ivan uses, g-pro, XTRE, or any other TRE aftermarket unit, the dash locks that 6th gear window no matter the hack a pack of Tandy's (Radio Shack).

What I've read about "generic FI," is that you use a lower ohm resistance read is how you richen the fuel trim. So, are you saying the book is wrong, generic FI is wrong and they leaned out the bike by using the 5th gear resistance?

Someone needs to call the factory and have them change all the manuals to read 5th instead of 6th of that code page. Because, Busa, and Kawi, both say they use, locked-6th.

I'm confused. Prove it. Show me the manuals are wrong.

 

[smithabusa]

Your understanding of the manual is wrong

Resistance is 500 ohms in 1st then goes up to as high as 15k in 6th gear, 5th is 6.8k

Ecu only locks to 6th gear IF the gps sensor doesn't output a correct signal to it

If it always locked to 6th why would there even be a gps sensor?

The higher the gear the more fuel there is for ram air effect.
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[valkyriemc]

This may be old for some but I still have questions.
Why is it some swear by them and others say stay away ?
Please provide detailed descriptive info backing up your opinions here.
If you say no...how, why and what...exactly ?
If you say yes...how, why and what..exactly ?
???
Advantages are ?
Disadvantages are ?

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[smithabusa]

Disadvantage is that you run 5th gear fueling all the time which sucks
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[Blanca BusaLess]

valkyriemc - you posted quote and then what ? Nada ? ???