Notices
General Technical
Sponsored by:
Sponsored by: CARiD

FC commander knock link

Thread Tools
 
Search this Thread
 
Old Sep 23, 2007 | 02:38 PM
  #1  
Sc0oby's Avatar
Sc0oby
Thread Starter
Scooby Regular
 
Joined: Oct 2006
Posts: 736
Likes: 0
Default FC commander knock link

just wondering how do you define how bad is knocking of the fc commander? there number range from 9-80? is 15 bad?
Reply
Old Sep 23, 2007 | 02:58 PM
  #2  
***Jonesy***'s Avatar
***Jonesy***
Scooby Regular
 
Joined: Dec 2006
Posts: 209
Likes: 0
From: Co. Durham
Default

no 15 is not bad.

Mine hit 16 today just starting it up lol.

Depends to a certain degree what age your car is? My mates 98 uk turbo is usually around the 6-10 mark. My 95 wrx is higher.

Ive just had mine fitted and mapped by andy forrest and he said n the 20's is fine on early wrx's, although mine is rarely that high.

I might hit 40 plus if im really givin it some, but again that is ok. I even hit 66 knock the day after I got it mapped, I rang andy and he said as long as its a one off its not a problem.

You have to remember its not actually engine knock that it is measuring, its back ground noise, so if you hit a bump in the road, a cats eye, even a white line, or a stone etc etc etc then that will raise the reading on the controller.

What i do is press the up button on the controller, that records your peak readings for the drive, and just keep a check on the peak reading everytime before you turn the car off. But 15 is fine! Thats around my usual normal driving reading, hard driving see's 20-30 sometimes higher.
Reply
Old Sep 23, 2007 | 11:27 PM
  #3  
rigga's Avatar
rigga
Scooby Regular
iTrader: (4)
 
Joined: May 2005
Posts: 1,966
Likes: 0
From: midlands......
Default

15 is very good,but as stated previously it all depends on the model year as the later the cars,the less engine knock is registered as they get quieter..apparently..... my my00 registers no more than 3 on start up and never more than 10 when on full chat......... 50 or so tends to be where most would tend to back off,though mine is mapped to flash the cell at 30 i believe.
Reply
Old Sep 23, 2007 | 11:39 PM
  #4  
WRXshaneWRX's Avatar
WRXshaneWRX
Scooby Regular
iTrader: (1)
 
Joined: Mar 2006
Posts: 1,734
Likes: 0
From: North Wales
Default

ur i only get about 5!!! and thats raggin it, does that mean im overfueling?
Reply
Old Sep 24, 2007 | 12:47 AM
  #5  
Welloilbeefhooked's Avatar
Welloilbeefhooked
Scooby Regular
iTrader: (3)
 
Joined: Sep 2003
Posts: 3,577
Likes: 0
From: Sheffield
Default

There is a noise level that is particular to your engine and state of tune, so every car is different.

Normally the noise level will increase with rpm and thats not a bad thing. Its when you get sudden spikes or large increases that you need to worry.

My MY98 WRX shows around 7-8 on cruise and normal running. After logging via datalogit this seems to be normal engine noise.

When I was mapping from 1.25 to 1.4 bar I saw some figures around 30 which was quickly resolved and mapped to show 10 - 12 on WOT at full boost.

Wayne.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
28
Dec 28, 2015 11:07 PM
Mattybr5@MB Developments
Full Cars Breaking For Spares
12
Nov 18, 2015 07:03 AM
Ganz1983
Subaru
5
Oct 2, 2015 09:22 AM
the shreksta
Other Marques
26
Oct 1, 2015 02:30 PM
WrxSti03
Drivetrain
0
Sep 30, 2015 10:24 PM




All times are GMT +1. The time now is 05:20 AM.