im having a wierd problem and cant figure out what is wrong. im using hondata s300 and have the rev limit set at 8600rpms. starting about a month ago it only goes up to about 8300rpms and then its like it hits the rev limit.. usually lets out a loud backfire. at first i thought maybe it was the ignition breaking. dont know why it would do that all of a sudden though. i put new plugs in it all the time. they are ngk r5672a-8's currently gapped at .020. ive even tried a lower gap and that didnt help. the ignition is all oem and ngk blues. ive even tried a msd blaster ss coil.

i have a old apexi rev/speed meter in the car and once i start getting up in high rpms it starts flashing the rpm. and sometimes my proform shiftlight will start going crazy once i get high up in the rpms.

anyone have any insight? its just wierd to me how i can only take it up to 8300rpms and not the 8500 like i want.

 

take your car 2 whoever dyno it and tell them what's going on with it

 

If you have a wideband in the car, do a datalog and cal and host it somewhere and post the link.
If you already gapped the plugs down, the problem is possibly an overly rich condition (or lean).

Not sure why you have the rev/speed thingy but I'd remove it to rule that out as well.

Good luck.

 

i had a similar issue in my friends car. turned out to be a bug with the full throttle shift. its rev limit was set to 8500 but then when i got in the car it rev limited at 6500. once i disabled the full throttle shift feature it immediately revved to 8500

 

maybe your boost cut is set too low and around 8300 rpms it starts creepingm,it happened to me.

 

Whoops, forgot to add the boost cut thing. If it is checked it may be overboosting.

Mike is right though, they did have a bug in the FTS. I thought that was fixed though. Are you using the latest version? Still worth a try though.

 

i updated the firmware about 2 weeks ago, not sure when that update came about. ill check on that though.

 

Mike, you may be hitting the rev limit, but your tach is just a little low. If everything else is going off like the cut, the CEL light, and other things then maybe your tach is a little off. Since you have checked the ignition side of things this might be your issue as tunes don't just randomly change.

 

boost cut or fuel cut...

I had a problem with full throttle shift also

 

is everybody who is having this FTS problems using the s300? I have had experience with crome and s200 but I was actually looking to go s300 route this time around so Im glad I have a ran across this thread.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ladysman &raquo;</TD></TR><TR><TD CLASS="quote">If you have a wideband in the car, do a datalog and cal and host it somewhere and post the link.
If you already gapped the plugs down, the problem is possibly an overly rich condition (or lean).

Not sure why you have the rev/speed thingy but I'd remove it to rule that out as well.

Good luck.</TD></TR></TABLE>

of course i have a wideband. and the tune is DEAD ON. i have not changed anything. its NOT the tune. (a/f and timing)

rev/speed thingy was only $30 and it saves the highest rev and mph. its not that lol. it just taps into tach and vss. this just recently started doing this..and i have done nothing to it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">i had a similar issue in my friends car. turned out to be a bug with the full throttle shift. its rev limit was set to 8500 but then when i got in the car it rev limited at 6500. once i disabled the full throttle shift feature it immediately revved to 8500</TD></TR></TABLE>

im not using full throttle shift. it has to be something to do with s300.. maybe i should try raising the rev limit even higher. i dont know..

and im not taking it back to the tuner (suprdave) because one there isnt anything wrong with the tune and two he is 8 hours away.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM SLICK &raquo;</TD></TR><TR><TD CLASS="quote">maybe your boost cut is set too low and around 8300 rpms it starts creepingm,it happened to me.</TD></TR></TABLE>

i thought that too but the boost cut is set at 27psi.. and i always watch it and it doesnt go past 25psi.

like i said i didnt change or do anything, just started doing this out of the blue and now it does it all the time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adseguy &raquo;</TD></TR><TR><TD CLASS="quote">Mike, you may be hitting the rev limit, but your tach is just a little low. If everything else is going off like the cut, the CEL light, and other things then maybe your tach is a little off. Since you have checked the ignition side of things this might be your issue as tunes don't just randomly change.</TD></TR></TABLE>

why would my my actual guage (both of them) read 300-400 rpms lower than the ecu though? so youre saying i should try raising the rev limit to like 8900rpms and see if it lets me take it out to 8500. ill try that.

and i always keep the firmware up to date.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh2 &raquo;</TD></TR><TR><TD CLASS="quote">

why would my my actual guage (both of them) read 300-400 rpms lower than the ecu though? so youre saying i should try raising the rev limit to like 8900rpms and see if it lets me take it out to 8500. ill try that.

and i always keep the firmware up to date. </TD></TR></TABLE>

I've seen tachs be off by 800rpm before (revving to 9.2k). You say you have 2 tachs? What does the ECU read? Try going and staying at 8,000 and see the difference between the ECU reading and your tach"s".

 

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

I've seen tachs be off by 800rpm before (revving to 9.2k). You say you have 2 tachs? What does the ECU read? Try going and staying at 8,000 and see the difference between the ECU reading and your tach"s".</TD></TR></TABLE>

ill try that but if i remember correctly they were the same..

doesnt the ecu get the tach signal from the same place as my gauges?

 

hook up a lap top and datalog it. it will tell you if its rev limiting, fts, boost cutting, launch control, what rpm your at everythign you should need to trouble shoot it.

 

I would look into the ignitor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">hook up a lap top and datalog it. it will tell you if its rev limiting, fts, boost cutting, launch control, what rpm your at everythign you should need to trouble shoot it.</TD></TR></TABLE>

i have many datalogs. where does it say im rev limiting, boost cutting, fts?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh2 &raquo;</TD></TR><TR><TD CLASS="quote">

i have many datalogs. where does it say im rev limiting, boost cutting, fts?</TD></TR></TABLE>

check the status of each of the sensors when this stuff occurs.

heres where you can find them on the sensor list, so find on the graph where this occurs and it might show you which limiter is activated if it is indeed a limiter.

 

ahh i see. ill check that out, thanks.

 

i think Civics use the distro. to get tach signal and integras use the ECU.

 

well i was doing pull to datalog and for some reason this was the first time in over a month it let me rev over 8300rpms. i was like wtf... until my tranny blew 4th gear. oh well its only my 4th tranny in about 1000 miles. stick another in her.


Modified by mike93eh2 at 9:12 PM 5/31/2007

 

Go go gadget D-sereies tranny <FONT SIZE="3"><FONT COLOR="red">POOF</FONT></FONT>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adseguy &raquo;</TD></TR><TR><TD CLASS="quote">Go go gadget D-sereies tranny <FONT SIZE="3"><FONT COLOR="red">POOF</FONT></FONT>

</TD></TR></TABLE>

pretty much. tranny is already out and have lsd swapped. now just need to get some amsoil synthetic MTF ASAP!