Hondata

i get this prompt when plugging my usb cable into my computer and three other computers ive tried.it doesnt allow me to upload or download as a result of this.i even had my tuner look at it and no luck.this for a greddy turbo rsx type-s.i disconnected a/f meter and turbo timer.what next?

Can you tell us the make, type and part number of the spark plug? Note that often the part number is on the metal seat. e.g NGK R5671A-7

This has got to be an interesting conversation, a spark plug type causing a usb-serial error? I'm subscribing to this thread..

yes, its an ngk4091 r5671a-7 just like you said.ive been running them for months and it just started with the usb serial crap.

I want to see what happens here?

hey doug , heres is some more info into this problem.the ecu reads this prompt outside the car as well.also i had an a/f meter and a turbo timer hooked up.the a/f meter had been in since the turbo install(5months)the turbo timer for 3 months.i took those out today.it shouldnt matter though because it doesnt work outside the car anyways.still trying.

ive read that article,but it doesnt explain why the ecu is not responding when out of the car.

The RF interference has damaged the KPro.

Install the correct spark plugs and send us the ECU so that we can fix the KPro.

where do you recomend buy those plugs.that link doesnt actually sell them?thanks for your help doug.

If your vehicle is naturally aspirated then use the stock plugs. If you have low pressure forced induction, then use the stock plugs. For over 10 lbs of boost, depending on what your engine builder recommends, consider a colder heat range iridium plug. Most plugs have built in resistors, you can check with the plug manufacturer's plug identifcation guide. Non-resistor plugs tend to be labeled 'non-resistor' since they are rare nowdays (the NGK v-power has 'non-resistor' on the outer cardboard box.

This has got to be an interesting conversation, a spark plug type causing a usb-serial error? I'm subscribing to this thread..

Learnt something about K-Series engines Joe? We all did.

ok.im trusting you on this one.everywhere else says to use coolder plugs.i saw the ocilliscope though,cant beat proof.i will be sending my k-pro from my boys at knowledge performance in atlanta.thanks doug!

You don't have to take our word for it. Look at what NGK and Denso say.

this question is along the same lines.after i get the plugs and the ecu back will i be able to hook my turbo timer back up?a/f meter?thanks again . kris lester

you should be recieving my k-pro on monday.i didnt give you return info.if you need to call my # is 678-618-1444.thanks kris.