The Rig

iTrader: (13)

On the track of course.

when doing 100 mph the knocklink is just flashin 1 green but when i take my foot off the loud pedal it will light up 2 green and at 140 mph there are 2 green lites lit but again,when de-accelerate they all light up and the red one.

if i put my foot back on the pedal they go back down to the 2 green/1 amber at 140 mph.

but when i coast off the throttle they all lite up and the red for a few seconds.


Anything to worry about ?

should note

classic import, z4 ecu,td05 turbo,ninja sports cat pipe,hks full sysem,standard airbox. runnin on v power standard map

Butty

iTrader: (2)

Heat shield loose?

The Rig

iTrader: (13)

Hmm, i do have a loose headers heat shield, it has split at the bolt so it vibrates sometimes but would that really cause enough vibration for the knocklink to pick it up so drastic ???

jasonius

iTrader: (1)

Only one way to find out..

Try and 'bung' it up some how, even temporarily. A bit of gaffer tape on the cold side should do it..

FWIW, drive train noise does cause KL to go crazy as it sits right on top of bell housing. Mine lights up light a cheap night in blackpool if tyres break traction under power (wheel spin). Coming off the gas at high revs will could cause enough tranny noise to set KL off, but as nick says loose heat shield has to be the first port of call.

Does it not light up if you lift off in say 3rd at similar rpm..?

The Rig

iTrader: (13)

will try the de-acceleration in 3rd and see if that does the same,dont really de-accelerate in 3rd and kept in 3rd so never noticed.

the heat shield is broke right on the bracket/bolted bit so will see what i can do

cheers

Aztec Performance Ltd

iTrader: (234)

Lift off det: Might be worth a read Detonation, det cans, knocklink - findings so far, and questions.... - 22B Bulletin Board

The Rig

iTrader: (13)

cheers,plenty to read through there !

thanks

The Rig

iTrader: (13)

cheers again for the link,i read 2 pages of it and i got the impression most have 3rd party devices/software other than knocklinks and didnt really find anything on De-acceleration at speed,unless i went into a reading blur ha ha

cheers again tho

dj219957

the z4 ecu is not mapped very well to go past 112mph. you are getting lift off det and yes it could do damage. running a scooby z4 ecu past at speeds you described is not a good idea IMO.

The Rig

iTrader: (13)

yeah,luckily its not often so at the mo,cant justify the £400+ for ecu/remap

cheers