I know this is an old topic, but anyone with updates on Ivans TRE on an 08 zx14?

I don't think those will be brought back out is my guess. The bike uses a processor. The processor has a backup for the telemetry. There are 3 ways to mimic a limp or backup. Find a jeweler's loop for this or if you have good eyes, look for the center tang or tongue that holds the male or female connector ends in place. Take a pocket screwdriver and file it down or grind it down so it fits in the connector body, can depress the tongue with the modified tip, then pull the wire out. Turn the key on and watch the ECU ping every wire and then when it pings off the GPS wires and sees the one wire dangling out of the connector, a 6 or N will pop up, if not; shift it or ride it to trigger it.

Get the tongue depressor out again, you pulled the N wire, not the 6 wire you were looking for. Since 1999, weedunt need no stink'inn updates.

thank you Sir Hub. But does it really make a difference when you put the TRE?

I don't remember all the tre info that was spoken of nonstop before 2008. If it was a mod worth doing after 06-07, i would have done it. There was a tre 06 and a tre 08. They had to do with decel popping and flies response. One locked the mapping in N the other locked it in 6th. The gear indicator will always read 6 or N too. The flies response is about as good as it can be on an 08 but if they are open all the time and tuned AFR for that, it should be a little better. Mine are removed and tuned and I don't think it makes a lot of difference except the throttle response is smoother at 3200 rpm. I don't mind a little decel popping so no reason to try to eliminate that for me.

http://www.ivansperformanceproducts.com/zx14.htm

tre08 simulates flies out

tre06 is throttle response and popping.

* Last updated by: Rook on 3/2/2017 @ 7:14 AM *

rvents,

So Hub is correct, the TRE on the 08 zx14 is basically just shorting out 2 pins on the cable for the gear position sensor. This TRE isn't technically a traditional Timing Retard Eliminator (there are other threads on this topic) as at least with the version that I purchased from Ivan it simply sets the main ECU to run in a non-emissions fuel map, the gear indicator goes blank (not N or 6) and its a single fuel and timing map for all gears.

So the short answer to your question "But does it really make a difference when you put the TRE?" is yes, the dyno charts that Rook posted a link to show the gains by using the TRE. Depending on what you are trying to accomplish with your motorcycle will change whether or not installing a TRE is worth it to you. In my particular case, I was looking for better performance with better fuel economy.

While I could skip the TRE and technically build different maps for each gear using only a single fuel and timing map that the TRE sets the ECU in makes things a ton easier.

PS: for the record, for performance mods: I'm running a full stainless-steel Akrapovic single can system, TRE, K&N air filter, PC5 w/ auto-tune & ignition module. The dyno chart that Ivan has on his page (bottom chart on Rook's link) shows a flat spot in the torque curve between 3 & 4k RPM, while I haven't paid to dyno my bike I can tell you for sure that this area can be improved by removing a large amount of fuel from this area (think 20%). Again there are other threads on this topic.

The dyno chart that Ivan has on his page (bottom chart on Rook's link) shows a flat spot in the torque curve between 3 & 4k RPM,

You will probably feel this if you turn the throttle even moderately hard from idle speed in first gear. It's like a slight hesitation and then BAM you have WOT. I get the same thing on my busa at a higher rpm. I'm sure its the flies. If you remove the flies or TRE them, you also need to adjust the fueling or you will get pretty close to the same thing as flies in. That was my experience. I still have a slight lag there i feel only if I'm on the gas hard. Additional tuning might get rid of it.

I never liked the idea of losing the gear indicator and that is probably why I never TREd mine. I think they're pretty cheap though. It's probably worth a try with or without other tuning equipment.

if you can find one. Ivan doesn't sell them anymore.

http://www.ivansperformanceproducts.com/tre.htm

I believe they cost about $60. Try the pin bend. OUCH I'd much rather spend $60 and leave my pins alone.

The GiPro TRE comes with an led gear indicator.

All a TRE does is fool the ECU into thinking it's in 6th anytime it's in gear. This eliminates the built in timing retard in the lower gears so you get full advance all the way through. As I understand it, the timing retard was programmed into the ECU to soften the horsepower hit in lower gears to help with traction and wheelie control. With the TRE, mine likes to come on the pipe like an old H1 500 and the front wheel starts clawing the sky with no special effort other than twisting the wick. Also, as I understand it, like secondary butterfly removal, it has much less impact on a post-'08 model.

Sounds like a cheap way to get the same effect as tuning with an ignition module. Or they just flash that nowadays.

Here is how I understand it. Harley uses a VOES or variable operating electronic switch. There is an idle [10°] to low to mid [40°] and then mid-high or full advanced to 55°. When the VOES loses signal, it turns to a timing retard like event. 40° is eliminated, and then you feel this abrupt throttle response from 10 to 55° as what Danno felt.

There is no tricking the computer. You just caused the 'backup' system to work. It went from analog [many inputs] to digital [single input]. This now limps the system or not FULL Power.

Thanks guys for all your comments. Will study it