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Re: M20B20 to MegaSquirt build

Posted: Sat Oct 01, 2022 3:19 pm
by garzon
I was going to ask about the connector... Do you know any way to call that connector? Some hint I could use to find one.

Regarding the MAF, I found this one: SIEMENS 5WK9007 or 1730033, I think it is the same you have. Could you please confirm?

Thanks.

Image
Image

Re: M20B20 to MegaSquirt build

Posted: Sat Oct 01, 2022 3:55 pm
by Wilmo
I use a 5WK9605 (BMW 13621432356) with a normal Bosch 3-pin connector.

Re: M20B20 to MegaSquirt build

Posted: Sat Oct 01, 2022 3:57 pm
by BertjeConti
Yep, thats the same one i'm using. Siemens 5WK9 007.

Re: M20B20 to MegaSquirt build

Posted: Sat Oct 01, 2022 4:06 pm
by garzon
BertjeConti wrote: Sat Oct 01, 2022 3:57 pm Yep, thats the same one i'm using. Siemens 5WK9 007.
Thank you.
Wilmo wrote: Sat Oct 01, 2022 3:55 pm I use a 5WK9605 (BMW 13621432356) with a normal Bosch 3-pin connector.
do you know if it will provide the same readings than the Siemens 5WK9 007? Seems easier to find this one you used at USA -I am getting the sensors from USA since here at Colombia they are way to expensive-.

Thanks a lot.

Re: M20B20 to MegaSquirt build

Posted: Sat Oct 01, 2022 4:25 pm
by Wilmo
garzon wrote: Sat Oct 01, 2022 4:06 pm
BertjeConti wrote: Sat Oct 01, 2022 3:57 pm Yep, thats the same one i'm using. Siemens 5WK9 007.
Thank you.
Wilmo wrote: Sat Oct 01, 2022 3:55 pm I use a 5WK9605 (BMW 13621432356) with a normal Bosch 3-pin connector.
do you know if it will provide the same readings than the Siemens 5WK9 007? Seems easier to find this one you used at USA -I am getting the sensors from USA since here at Colombia they are way to expensive-.

Thanks a lot.
Probably not, but you need to calibrate it to your own situation anyways. The flow characteristics are different from build to build, so finetuning is needed.

Here are a number of basic functions:
https://rusefi.com/forum/viewtopic.php?f=4&t=1726

Re: M20B20 to MegaSquirt build

Posted: Sat Oct 01, 2022 4:27 pm
by BertjeConti
I've used this connector for the 5Wk9 MAF, got them from the bmw dealer:
61131392224 p/n connector
61131376204 p/n terminal

Connector needed a little rework to fit, but doable.

Terminals from a old PC power supply do fit the terminal pins on the maf nicely, with these terminals and leads i did the first tests:
Image

Connector and crimp terminals from the dealer:
Image

Modified connector:
Image

MAF and connector nicely installed:
Image

Re: M20B20 to MegaSquirt build

Posted: Sat Oct 01, 2022 4:37 pm
by garzon
BertjeConti wrote: Sat Oct 01, 2022 4:27 pm I've used this connector for the 5Wk9 MAF, got them from the bmw dealer:
61131392224 p/n connector
61131376204 p/n terminal

Connector needed a little rework to fit, but doable.
Thanks a lot!! I just found it really cheap.

Wilmo wrote: Sat Oct 01, 2022 4:25 pm
Probably not, but you need to calibrate it to your own situation anyways. The flow characteristics are different from build to build, so finetuning is needed.

Here are a number of basic functions:
https://rusefi.com/forum/viewtopic.php?f=4&t=1726
Sir that's a great source of more information. Really appreciate it.