I still got that knocking problem I cannot solve.

The ecu detects knock over 60 or 70 at 5k, 5,2k and 5,8k, under full throttle in 4th and 5th speed.

I added fuel
I added more fuel
I reduced ignition

She contiues knocking.

Injectors are able to handle more fuel, this is not the problem...

But there`s something I don`t understand:
If I kick it down in 2nd or 3rd, she doesn`t knock at those numbers.

Pressure axis and rpm axis are quite the same, but she doesn`t knock.. ONLY in 4th or/and 5th speed.


2nd speed / full throttle / 5k / ===> knock rate of 10-20
5th speed / full throttle / 5k / ===> knock rate of 70


W H Y ??????

 

Did you try a heat range colder spark plug?

Your tuner has no guess?

 

Question 1) YES

Qestion 2) He`s running off ideas too.... No time for a dyno day for him an me these days...

 

rise the Vtec x-over as up as possible and do da test run again

 

knocking happens before my actual vtec kicks in

 

Maijk, bring your fuel back to where you dyno it, try to knock back your ignition a lil bit less, you shouldnt have any problems. Did you try playing with your PIM Volt too?
IM me if you have further question, Europe's typeR seems the same and we run same 98RON fuel, so everything should be pretty similar.


[Modified by DC2#309, 12:46 PM 6/30/2002]

 

Hmmm, I already went back from 34 to 32 degrees at N10 (5000rpm) in PrBl. 10..
And for what I noticed is, the more fuel I add (now at 125%) the more bad the kocking gets... But reducing fuel have had the same effect..

Oh, I added 2% at PIM Volt, just like you told me.... The knock-warning curve still explodes when heading 5000rpm in 5th speed at pressure of 9 or 10.





[Modified by Maijk ITR1858, 7:07 PM 6/30/2002]

 

Pulling any CEL's? maybe its your distributor???

 

What it can be is actual engine noise. I know with my PowerFC it said i was knocking at a around 5000RPM, so i pulled the timming and it still did it, pulled it more added fuel, same thing, i retarded my timming around 10 degrees and dumped fuel and it still did it. Then i found out it was the actual sound of my engine causing it to think the motor was knocking. I know the PowerFC's "Knock" sensor is actually pretty crappy and can't really distinguish between actual knock, and just noise from the engine bay.

 

I assume you are using the injector multiplier to add fuel

 

Wow, looks familiar to me... How did you make sure that it was NOT knocking but engine noise...?
It`s exactly the same to me how you described it..