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21st April 2017, 08:53 PM
#1
Beginner
Electronic boost controller td4q
Hi all I have GQ TD42 with a kinugawa td05 18g running 24psi boost it goes fairly well but with the manual boost controller the wastegate suffers from boost creep. It has a 1.5 bar spring in the wastegate actuator and i can get 26psi with wastegate signal line disconnected but boost response is heaps better. So was thinking of an electronic boost controller for faster spool up. Just wondering what other people are running?
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21st April 2017 08:53 PM
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21st April 2017, 09:54 PM
#2
Expert
doesnt matter what controller you use if your getting boost creep it means the wastegate cant bypass enough exhaust gases to control the boost level corectly
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22nd April 2017, 08:09 AM
#3
Beginner
No what i mean is the wastegate is opening way before full boost is achieved hence the reason i need the wastegate to stay closed until nearly full boost to allow faster spool up and to hold 24psi better
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22nd April 2017, 07:11 PM
#4
Expert
put more preload on the actuator, if it doesnt have enough preload then the wastegate can open up a little and cause slow response
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22nd April 2017, 07:20 PM
#5
Beginner
I have the wastegate arm with about 10mm preload without the manual boost controller it only makes about 6 psi. So i might have to try one of there 2 bar springs in the actuator.
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Last edited by MAP8P; 22nd April 2017 at 08:04 PM.
Reason: Spelling
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22nd April 2017, 09:18 PM
#6
Beginner
Originally Posted by
billyj
put more preload on the actuator, if it doesnt have enough preload then the wastegate can open up a little and cause slow response
I have the wastegate arm with about 10mm preload without the manual boost controller it only makes about 6 psi. So i might have to try one of there 2 bar springs in the actuator.
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22nd April 2017, 09:59 PM
#7
Expert
try a bit more preload, but it sounds like you need to get an actuator to suit your target boost level
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7th May 2017, 09:44 PM
#8
Beginner
Changed the spring a lot better now
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