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Model specific boards => Golf mk4 => Topic started by: rio_gti on 10 March 2012, 15:28

Title: wastegate duty cycle *please look quick!!*
Post by: rio_gti on 10 March 2012, 15:28

on a standard 150bhp what should the % be as on 3rd wot we hittin 44% (@3880 rpm) then dropping off slowlt to 33% at full rpm (@5880)

is this correct??

Title: Re: wastegate duty cycle *please look quick!!*
Post by: rio_gti on 11 March 2012, 13:11

Anyone??  :undecided:

Title: Re: wastegate duty cycle *please look quick!!*
Post by: Chris. on 11 March 2012, 14:14

Seems pretty low to me, but im not sure what a standard one does.

Title: Re: wastegate duty cycle *please look quick!!*
Post by: asboGTI on 11 March 2012, 16:57

did quite alot of digging mate and turns out its proberly a weak actuator so maybe gonna get a new trubo as either wya will probably be the same the same amount of work

Title: Re: wastegate duty cycle *please look quick!!*
Post by: Chris. on 11 March 2012, 16:58

Surely a weak actuator would see a increase in duty cycle as it struggles to meet the required boost?

Title: Re: wastegate duty cycle *please look quick!!*
Post by: asboGTI on 11 March 2012, 17:05

maybe but speaking to a few people in the know and this what they rekon without looking at it and plus it also gives me a reason to tell the perso who wears the trousers i need a turbo  :grin: :laugh:

Title: Re: wastegate duty cycle *please look quick!!*
Post by: rio_gti on 11 March 2012, 18:52

Lol you know!!! So does that mean that I got a weak actuator as I hit 100% then down to about 76%

Title: Re: wastegate duty cycle *please look quick!!*
Post by: Chris. on 11 March 2012, 18:55

Well it means that your ecu is telling the N75 valve to work 100% of its capability to meet the required boost.