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Discussion Starter #1
When I let OFF the throttle On my E5 only on high boost it jerks quite badly, any ideas I have Bailey dump valve and HKS F-CON ecu????
 

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krissevo said:
Yeah still running the MAF
As RichW said go back to the std bov as this is whats causing the jerking as the maf is seeing more/less air and causes the car stutter i think, as i had this on my car.

Lee
 

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You could try an HKS Idle stabiliser, this will modify the AFM signal to the ECU when you lift off the throttle to compensate for the air that's been lost via the Dump Valve. They apparently work quite well.

Alternatively you may be able to enable this functionality in the F-CON - probably worth checking the manual.


Cheers,


Simon
 

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Discussion Starter #10
Already got the idle stabilizer in theory would a dump valve with a higher spring tension perhaps lessen the jerk as it only happens letting off from high boost, don't really want to get another dump valve if it ain't gonna change things.
 

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krissevo said:
Already got the idle stabilizer in theory would a dump valve with a higher spring tension perhaps lessen the jerk as it only happens letting off from high boost, don't really want to get another dump valve if it ain't gonna change things.
Take the dump valve off and blank the pipes, the big pipe will need to be securely blanked though, I run no DV now, but when i first blanked it, it blew the bung straight out again. See if that cures the stutter before you buy a new one

S
 
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