[Diy_efi] Crank sensor for knock detection?

[PuffnSmoke]

Certain models, Ford trucks in particular (F series) use knock sensors
and are MAF (and are NA), Dodge trucks do not use knock sensors and are
speed density (and are also NA).  I was just curious if there is any
form of real time detection and timing compensation done.  I was
assuming the engine control system on the Dodge was more intelligent
that it actually is.

Mike


  

> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org 
> [mailto:diy_efi-bounces at diy-efi.org] On Behalf Of Mike
> Sent: Wednesday, March 12, 2003 12:46 PM
> To: List for general do-it-yourself EFI talk
> Subject: RE: [Diy_efi] Crank sensor for knock detection?
> 
> 
> Some of the knock sensors I have heard about (pun;)
> can be really well hidden in weird locations behind
> bits of the engine.
> 
> If you are talking n/a - I doubt many standard models
> have knock detection. Turbo models is pretty much a
> definite for OEM tuned setups, some people just
> use a stethoscope or long tube wth rubber cup
> when tuning and dont bother with
> a sensor then map the onset of knock and back off
> a tad when cementing the final map when off the dyno.
> 
> I'm curious why you are convinced there must be detection,
> for a n/a in factory tune - arent they pretty conservative
> so a knock detect isnt necessary ?
> 
> What are you referencing to come to your post query ?
> 
> rgds
> 
> mike
> ps: too late for me, back to bed


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