I know the aspects of early rev limiter until a certain speed. but what I am wodnering is.. when you're spinnig the tires and bouncing off rev limiter... your speedo reads and thinks you are traveling however fast your wheels are turning... Now if you're spinning tires at say 3500RPM and your speedo says like 25KM/H, how does your ECU know to NOT shut off the FTL limiter and that you really are NOT travelnig 25KmH? I'm on mechanical speed sensor if that means anything.

 

Most full throttle shift setups cut the ignition over a clutch switch or over some type of micro switch (off the shifter), they're not based off speed. They are simply used for unloading the tranny between shifts. You wouldn't be refering to traction control or something, would you? If you are most of these systems are computer based and limit the motor's rpm over a timed based map.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kataku2K3 &raquo;</TD></TR><TR><TD CLASS="quote">Most full throttle shift setups cut the ignition over a clutch switch or over some type of micro switch (off the shifter), they're not based off speed. They are simply used for unloading the tranny between shifts. You wouldn't be refering to traction control or something, would you? If you are most of these systems are computer based and limit the motor's rpm over a timed based map.</TD></TR></TABLE>

You just described full throttle shift, not full throttle launch like he was asking. FTL does work off the vehicle speed sensor. To answer the original question, you control the point at which the ftl is disabled in the ECU. You can set it to disable at any speed... If your sitting there spinning the tires and bouncing off the launch control, something isn't set correctly.

 

I jsut watched the video on hondata's website with their LC, I always thought you are suppseod tos et it to where your spnining and boucning off the launch control till you pcikup speed, but on their video. they set it low enoghu where they spin a tiny bit, where it's not too much, but not too little to the point where they would bog when the tires bite and FTL deactivates, correct?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tchleung &raquo;</TD></TR><TR><TD CLASS="quote">I jsut watched the video on hondata's website with their LC, I always thought you are suppseod tos et it to where your spnining and boucning off the launch control till you pcikup speed, but on their video. they set it low enoghu where they spin a tiny bit, where it's not too much, but not too little to the point where they would bog when the tires bite and FTL deactivates, correct?</TD></TR></TABLE>

The way I do mine (I program my own ECU stuff) is I set it to deactivate around 3kmh. Basically, once the car is moving at all, it cuts off. I never had a problem with it and when its set to the correct rpm point, it gets me consistent times.

 

What RPM do you have yours set at? I jsut reburned my chip yesterday and have it disengage at 8MPH, anything below 8MPH is 3700 rev limit. When you do full throttle launch, how does it act for you? does it jsut spin the tires for a second, then grab and go?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tchleung &raquo;</TD></TR><TR><TD CLASS="quote">What RPM do you have yours set at? I jsut reburned my chip yesterday and have it disengage at 8MPH, anything below 8MPH is 3700 rev limit. When you do full throttle launch, how does it act for you? does it jsut spin the tires for a second, then grab and go?</TD></TR></TABLE>

I wish it was that easy. I have a little too much power for my suspension though, so I just sit there in a fury of violent wheel hop which usually results in something falling off the dash (radio trim bezel) and flying into the rear seat IF I get traction at all. Right now its set to 3,500rpms which is proving to be too high. I have found you can't set it on the street because what works on the street is usually much too low for the track.

 

Yeah so I have heard, that's what makes me iffy on these, I'd ahve to bring my laptop to teh track and burn a new chip with set FTL allt eh time till I get a good luanch limit hehe. I knoww aht you meana bout the spinning vilontly lol. But I don't geet any wheel hop, prolly due to mount inserts and traction bar. Lemme guess you have an EG?

 

Oh damn, my bad, it was late last night when I posted Anywho, you're just talking about the 2step control then. It really doesn't matter whether you're car is physically moving or not moving, if you have your 2step set to be active anytime the car is under 10mph and you SPIN off the launch if your ECU sees 10mph+ it will shut off. Normally I wire our MSD boxes over the E-brake and clutch pedal so there's not a lot to (as soon as we launch the E-brake and clutch come out turning off the 2step) it but there's no reason to start bumping the cut off speed way up unless you're trying to use it as a traction control... The important thing as you know is finding the rpm, don't worry about how it's activated.

 

I use the aem ems 2 step based off of the vss readings also. Turns off at like 3 mph, or basically as soon as you drop the clutch. Works good so far. I wish I could set it up so that it would work as a limiter when Im heating the slicks to get more consistent tire temps, but afaik its not possible with the aem.....unless after the burnout i reach over to the laptop and re-set the 2 step's vss settings

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tchleung &raquo;</TD></TR><TR><TD CLASS="quote">Yeah so I have heard, that's what makes me iffy on these, I'd ahve to bring my laptop to teh track and burn a new chip with set FTL allt eh time till I get a good luanch limit hehe. I knoww aht you meana bout the spinning vilontly lol. But I don't geet any wheel hop, prolly due to mount inserts and traction bar. Lemme guess you have an EG?</TD></TR></TABLE>

Yeah, its an EG. No traction bars yet, that is soon to come.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah, its an EG. No traction bars yet, that is soon to come.</TD></TR></TABLE>

Most Eg's to me seem like they always ahve too much wheel hope unless modded to fix it. kidan weird.

ANyways.t ested out teh FTL again in the dry night. 3700FTL is way too high haha. gonna ahve to edit the hex down to 3000 and see how it likes it