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Title: 1.8t auq vvt or not Post by: tao13 on September 06, 2018, 05:19:53 AM Hi all.
I have an 1.8t skoda auq with phisical vvt instaled on it. In the file i saw it is not used (inactive) from factory because the KFNWSE is 18 everypoints. It is correct? Many thanks in advance for your time. Title: Re: 1.8t auq vvt or not Post by: adam- on September 06, 2018, 05:38:56 AM Correct.
Title: Re: 1.8t auq vvt or not Post by: tao13 on September 06, 2018, 08:20:46 AM And if these are correct
Why the VW/Audi put the vvt timing adjuster if it is disabled from the soft? Title: Re: 1.8t auq vvt or not Post by: fknbrkn on September 06, 2018, 10:49:07 AM Because fashion
Title: Re: 1.8t auq vvt or not Post by: vwaudiguy on September 06, 2018, 08:27:44 PM And if these are correct Why the VW/Audi put the vvt timing adjuster if it is disabled from the soft? Did you check all the cam timing maps? Title: Re: 1.8t auq vvt or not Post by: tao13 on September 07, 2018, 01:12:21 AM Conform what WIKI said if kfnwse is 18 every point and CDNWS is set to 0 i hoped the vvt is disabled
In eskonf is not deactivated nws and kfzw is not the same with kfzw2 and for OP the same. Fukebroken stay calm with your explanation, if you don't want to say something real , please go in other topic. Title: Re: 1.8t auq vvt or not Post by: adam- on September 07, 2018, 01:32:43 AM But he's right. They put it in just because.
Log and you'll see it's inactive. Title: Re: 1.8t auq vvt or not Post by: tao13 on September 07, 2018, 02:48:27 AM made log
fnwue looks like inactive all the time , my question (maybe is stupid question) was why they installed the vvt if it's not active. thanks Title: Re: 1.8t auq vvt or not Post by: cerips on September 07, 2018, 03:53:18 AM I imagine they decided it was cheaper to make all 1.8t heads with vvt capability and just use the ecu version to enable or disable it.
Title: Re: 1.8t auq vvt or not Post by: adam- on September 07, 2018, 04:44:26 AM Ask Bosch/VW. We can only speculate.
Title: Re: 1.8t auq vvt or not Post by: vwaudiguy on September 07, 2018, 11:04:18 AM Just looked at an original AUQ file I have and KFNWKHE = -4.0003, with CDNWS = 03.
Title: Re: 1.8t auq vvt or not Post by: carsey on September 07, 2018, 12:41:14 PM Have a play with the map.
Can use VVT to aid spool. Title: Re: 1.8t auq vvt or not Post by: userpike on September 07, 2018, 01:24:33 PM It is my understanding that the only thing VVT is used for on the 1.8t is to aid in warm up. It's not like VTEC at all. people on here have used it to help spool large frame turbos I believe.
Title: Re: 1.8t auq vvt or not Post by: userpike on September 07, 2018, 01:26:08 PM This info on the VVT is via my Bentley repair manual.
Title: Re: 1.8t auq vvt or not Post by: userpike on September 07, 2018, 03:13:28 PM I imagine they decided it was cheaper to make all 1.8t heads with vvt capability and just use the ecu version to enable or disable it. Actually, what they did was make the VVT unit fit the 20v 1.8t head. The AEB 1.8t didn't come with VVT but still came with an oil controlled chain tentioner. The difference between it's chain tentioner and the VVT unit on other 1.8ts is a solenoid controlled via the ECU. So if you are running an AEB head on lets say an AWP/06A block and the ECU has VVT capabilty and the harness a plug for it you can install the VVT chain tentioner without modification into the AEB head and reap the benifits for your large port, big turbo application. Title: Re: 1.8t auq vvt or not Post by: userpike on September 07, 2018, 03:23:03 PM And if these are correct Why the VW/Audi put the vvt timing adjuster if it is disabled from the soft? because people aren't logging the first 30 seconds of the first start of the day when the engine is absolutly cold is my guess. Title: Re: 1.8t auq vvt or not Post by: tao13 on September 10, 2018, 10:23:14 AM Will try to log first minute.
vwaudiguy "KFNWKHE " is for other thing i think "Kennfeld für Nockenwellenspreizung bei Katheizen (Einlaß)" In few topics i read and people said the if kfnwse is 18 everywhere and CDNWS = 0 vvt is disabled Thanks to all for your suggestions. |