Knock knock knock...

FlashPro questions & answers specific to the FD2 Japanese Civic Type R
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romeochris
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Joined: Wed Mar 09, 2011 9:17 am

Knock knock knock...

Post by romeochris » Wed Mar 30, 2011 6:54 am

Dear Hondata,
Just bought a FP last week and reflashed on my JDM FD2R with the Hondata Type R reflash calibration. I had a good run on Sunday morning, approx. 43mins run datalogged and recorded 23times knock counts (#1=3, #2=13, #3=6, #4=1) :( , also seems the #2 has many more knocks than others. I did try to datalog before the reflash, it has recorded ZERO knock count, how come it has so big difference? Is that the built-in Hondata Type R reflash calibration cannot fit my STOCK FD2R? Should I keep using this calibration and safe still? Thank you!

engjoo
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Joined: Wed Mar 10, 2010 1:00 am

Re: Knock knock knock...

Post by engjoo » Wed Mar 30, 2011 8:23 am

romeochris wrote:Dear Hondata,
Just bought a FP last week and reflashed on my JDM FD2R with the Hondata Type R reflash calibration. I had a good run on Sunday morning, approx. 43mins run datalogged and recorded 23times knock counts (#1=3, #2=13, #3=6, #4=1) :( , also seems the #2 has many more knocks than others. I did try to datalog before the reflash, it has recorded ZERO knock count, how come it has so big difference? Is that the built-in Hondata Type R reflash calibration cannot fit my STOCK FD2R? Should I keep using this calibration and safe still? Thank you!
Same problem I am facing. Not even this cal knocks but calibrations that have been tuned by good tuners also knocks alot. If you keep driving long enough, you will also see (from the logs) that it will retard over time and you have noticeable loss in the low end.

Hondata has not explained why this is happening. My guess is some compensatation is not working properly. I would be more than happy to stand corrected if Hondata can explain why I am wrong.

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Hondata
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Post by Hondata » Wed Mar 30, 2011 8:48 am

RRC-2-Reflash has advanced timing over stock. 23 knock counts over 43 minutes is not excessive. I suggest you start to identify the areas where you're getting the knock, and reduce the ignition timing by small increments until you tune the knock out.
Hondata

engjoo
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Post by engjoo » Wed Mar 30, 2011 10:29 am

Hondata wrote:RRC-2-Reflash has advanced timing over stock. 23 knock counts over 43 minutes is not excessive. I suggest you start to identify the areas where you're getting the knock, and reduce the ignition timing by small increments until you tune the knock out.
How would you explain that the stock equivalent calibration is also knocking as much ?

romeochris
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Post by romeochris » Mon Apr 11, 2011 8:57 am

Hondata wrote:RRC-2-Reflash has advanced timing over stock. 23 knock counts over 43 minutes is not excessive. I suggest you start to identify the areas where you're getting the knock, and reduce the ignition timing by small increments until you tune the knock out.
Dear Hondata,
I had noticed the knock count #2 has the most of the knocks recorded, usually doubled or triple times to the others. We could I do now? Any suggestions? Thank you!

romeochris
Posts: 25
Joined: Wed Mar 09, 2011 9:17 am

Post by romeochris » Sat Apr 16, 2011 7:03 am

romeochris wrote:
Hondata wrote:RRC-2-Reflash has advanced timing over stock. 23 knock counts over 43 minutes is not excessive. I suggest you start to identify the areas where you're getting the knock, and reduce the ignition timing by small increments until you tune the knock out.
Dear Hondata,
I had noticed the knock count #2 has the most of the knocks recorded, usually doubled or triple times to the others. We could I do now? Any suggestions? Thank you

Does anyone knew the answer I was asking, please? Thanyou.

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Hondata
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Post by Hondata » Sat Apr 16, 2011 10:53 am

It can be tricky because the knock sensor is closer to #2 than the other cylinders; however #2 cylinder typically gets slightly better cylinder filling than the other cylinders.

I would suggest to retard the timing by 1 or 2 degrees.
Hondata

romeochris
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Post by romeochris » Mon Apr 18, 2011 10:16 am

Thank you~ :D

engjoo
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Re:

Post by engjoo » Sun Jun 05, 2011 10:35 am

Hondata wrote:It can be tricky because the knock sensor is closer to #2 than the other cylinders; however #2 cylinder typically gets slightly better cylinder filling than the other cylinders.

I would suggest to retard the timing by 1 or 2 degrees.

How is it tricky? Is it possible to eliminate the knocks and loss of power?

Alexx
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Joined: Thu Aug 18, 2011 3:18 am

Re: Knock knock knock...

Post by Alexx » Sun Aug 21, 2011 9:55 pm

engjoo wrote:
Hondata wrote:It can be tricky because the knock sensor is closer to #2 than the other cylinders; however #2 cylinder typically gets slightly better cylinder filling than the other cylinders.

I would suggest to retard the timing by 1 or 2 degrees.

How is it tricky? Is it possible to eliminate the knocks and loss of power?

Yes it is possible.

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