kpro cuts out during datalogging

flanz · Post by **flanz** » Fri Jan 16, 2009 5:53 pm

i have an 06 turbo rsx type s

when datalogging, it almost always cuts out and stops datalogging when either i hit vtec or randomly while driving or idling...

this is making it very difficult to tune, this has only started happening since the turbo install, my best guess would be a grounding issue? my buddies turbo rsx had the same problem... we dont know the solution, if someone could help me out that would be great! its very frustrating when i cant get a full wot pull :x

Post by **Spunkster** » Mon Jan 19, 2009 10:29 am

http://www.hondata.com/techksparkplugs.html

flanz · Post by **flanz** » Mon Jan 19, 2009 8:13 pm

dont believe thats it... try again lol

ive been running BKR8EIX's...

Post by **Spunkster** » Tue Jan 20, 2009 10:17 am

Try swapping back to stock plugs. This is a very common problem with turbo kits.

Axix23 · Post by **Axix23** » Tue Feb 03, 2009 12:55 am

first of all, it has nothing to do with your plugs. I had to this problem before.. Check your usb cable... And also make sure your k-manager is up to date.. And make sure your labtop is working properly.. And your wireless connection is disabled..

flanz · Post by **flanz** » Tue Feb 03, 2009 3:12 am

Axix23 wrote:first of all, it has nothing to do with your plugs. I had to this problem before.. Check your usb cable... And also make sure your k-manager is up to date.. And make sure your labtop is working properly.. And your wireless connection is disabled..

k-manager is up to date

laptop is fine-wireless disabled, i used to tune it when i was all motor no problems

i guess i can try a new cable

Corey872 · Post by **Corey872** » Tue Feb 03, 2009 8:10 pm

Mo ferrite, mo ferrite, mo ferrite...

Add extra beads, both ends of the cable, as close to the end as possible (hopefully get one bead after the stock bead) loop the cable through the bead if you can. I did all the other BS...engine ground, different computers, different cables, stock plugs, BKR8EIS plugs, whatever... but data logging would still lock up 9 times outta 10. Added mo ferrite and I don't think it's locked up once in the year and a half since.

Also, don't loop your cable...try to make it come out of the ECU straight out to your computer. If you have to, put a "U" bend in it, but don't ever coil up the extra or let it lay in loops on the floor.

flanz · Post by **flanz** » Tue Feb 03, 2009 8:58 pm

Corey872 wrote:Mo ferrite, mo ferrite, mo ferrite...

Add extra beads, both ends of the cable, as close to the end as possible (hopefully get one bead after the stock bead) loop the cable through the bead if you can. I did all the other BS...engine ground, different computers, different cables, stock plugs, BKR8EIS plugs, whatever... but data logging would still lock up 9 times outta 10. Added mo ferrite and I don't think it's locked up once in the year and a half since.

Also, don't loop your cable...try to make it come out of the ECU straight out to your computer. If you have to, put a "U" bend in it, but don't ever coil up the extra or let it lay in loops on the floor.

ok thank you for this... i thought adding more ferrite beads might solve the problem... ill try this out... i appreciate it

Post by **Hondata** » Wed Feb 04, 2009 9:40 am

Adding ferrites may help the problem but it does not address the cause - electrical interference, of which the most common source is the spark plugs.

Corey872 · Post by **Corey872** » Wed Feb 04, 2009 12:19 pm

This is certainly true. And I would definitely urge everyone to go through the ignition system and make sure everything is clean and tight.

I initially tried everything I could think of to stop the noise at the source...stock plugs, cooler plugs my turbo actually needs to run, clean/new plugs with copper antiseize on the threads for good grounding, move ground wires to the valve cover, made an aluminum "RFI" shield to replace the plastic spark plug cover, made sure each ign coil had a clean ground to the valve cover, cleaned all engine grounds, made sure they were tight, and only the OEM grounds were used, tried running my computer both on battery power and on external (car grounded) power. I would still get random and frequent datalog lock-ups. The added ferrite stopped the lockups instantly.

In the end, I'm sure there are plenty of RF sources in the car...spark plugs, aftermarket fuel pump [I don't know if it's just me, but it seems like the lockups might have become more frequent after the aftermarket pump was installed], alternator, stereo/amp, radar detector, etc. It wound up being easier to just add some additional ferrite to the cable rather than try to stop/shield each individual source.

flanz · Post by **flanz** » Wed Feb 04, 2009 2:33 pm

Corey872 wrote:This is certainly true. And I would definitely urge everyone to go through the ignition system and make sure everything is clean and tight.

I initially tried everything I could think of to stop the noise at the source...stock plugs, cooler plugs my turbo actually needs to run, clean/new plugs with copper antiseize on the threads for good grounding, move ground wires to the valve cover, made an aluminum "RFI" shield to replace the plastic spark plug cover, made sure each ign coil had a clean ground to the valve cover, cleaned all engine grounds, made sure they were tight, and only the OEM grounds were used, tried running my computer both on battery power and on external (car grounded) power. I would still get random and frequent datalog lock-ups. The added ferrite stopped the lockups instantly.

In the end, I'm sure there are plenty of RF sources in the car...spark plugs, aftermarket fuel pump [I don't know if it's just me, but it seems like the lockups might have become more frequent after the aftermarket pump was installed], alternator, stereo/amp, radar detector, etc. It wound up being easier to just add some additional ferrite to the cable rather than try to stop/shield each individual source.

any idea of what size and kind of ferrite beads to purchase?

Corey872 · Post by **Corey872** » Wed Feb 04, 2009 6:05 pm

My cable measures .200" or 5mm in diameter. So ideally, if you had a ~ 5mm bead to put on each end of the cable, you could put that after the stock bead (where you really can't loop the cable). Then if you had a 10mm bead, you could loop the cable once through that and put it right before the stock bead - pretty much like I show in the photo. So 2ea 5mm beads and 2ea 10mm beads would be ideal. I don't think the actual ferrite composition is terribly critical, since the FR is probably occurring over a broad spectrum. Typical ebay/generic stuff would probably work.

flanz · Post by **flanz** » Wed Feb 04, 2009 9:07 pm

Corey872 wrote:My cable measures .200" or 5mm in diameter. So ideally, if you had a ~ 5mm bead to put on each end of the cable, you could put that after the stock bead (where you really can't loop the cable). Then if you had a 10mm bead, you could loop the cable once through that and put it right before the stock bead - pretty much like I show in the photo. So 2ea 5mm beads and 2ea 10mm beads would be ideal. I don't think the actual ferrite composition is terribly critical, since the FR is probably occurring over a broad spectrum. Typical ebay/generic stuff would probably work.

k ill give it a shot, thanks bud