1990 325is restomod project aka "Klaus"

[bradnic]

Can’t wait to see Klaus in person..

[Staszek]

Gratuitous shot after I detailed some of the other rides.




And one more shot of the E30.

[R3Z3N]

Variable Compressor or not does not matter. Without either of these 2 boards there is no compressor control. But if you have the variable displacement compressor, it will run as such. You see that the wiring from the ECU to compressor goes through a relay first? This means the ECU does not and can not vary the signal to the ECU except by switching the relay on and off. Ours is mechanically controlled, not electronically controlled for it's variable properties.

However with the MSS54, you have other niceties such that under WOT (wide open throttle) the ECU shuts off AC to regain the parasitic draw of the AC system.

Read this:
https://www.underhoodservice.com/bmw...c-compressors/

[Staszek]

That's what Gary and Airventdisplay.no's solutions take care of. It's not all CAN bus though, some is on the K-Bus. Just know, with the magic of programmers and hardware guys like the 2 mentioned, we can have working AC, and can utilize the E46 variable compressor.

So without it the variable compressor will not turn on correct?

[R3Z3N]

That's what Gary and Airventdisplay.no's solutions take care of. It's not all CAN bus though, some is on the K-Bus. Just know, with the magic of programmers and hardware guys like the 2 mentioned, we can have working AC, and can utilize the E46 variable compressor.

[Staszek]

With the usual S54 swap without the PWM fan, its best to put the MSS54/HP into Z3 chassis config which uses a dual relay setup like the E30. But with Garys solution or the one that Airventdisplay.no is coming out with, make sure your MSS54/HP is set for the default E46 chassis config.

So how does the variable E46 compressor work without the Can Bus?

[Jokester]

Sounds good to me. Keep up the good work!

[Staszek]

The super sports are a lot softer of spring rate. I’d expect the rubbing issues to stay there if he went with the super sports or possibly get worse.

A little camber, roll the fenders, stronger springs. Call it a day

Keeping these springs, going to roll, 10mm spring pads and a bit more camber. Should be perfect.

[Jokester]

The super sports are a lot softer of spring rate. I’d expect the rubbing issues to stay there if he went with the super sports or possibly get worse.

A little camber, roll the fenders, stronger springs. Call it a day

[R3Z3N]

Small update, the fans are now working. Not sure if the Can bus is working right yet but at this point, I just want to drive the car and figure that out later.

With the usual S54 swap without the PWM fan, its best to put the MSS54/HP into Z3 chassis config which uses a dual relay setup like the E30. But with Garys solution or the one that Airventdisplay.no is coming out with, make sure your MSS54/HP is set for the default E46 chassis config.

[Staszek]

Glad to see that it’s basically done. Have you considered going one step up to the H&R super sports? They are right in between the Sport and Race

Maybe, I actually have the 3mm spring pads on the rear, I’m going to swap that to the 10mm ones. Plus a slight roll. It’s sits so nice now.

[2mAn]

Glad to see that it’s basically done. Have you considered going one step up to the H&R super sports? They are right in between the Sport and Race

[e30RS]

That is an incredible "gift."Love the build and the nickname. Both superb. Good luck going forward I will be checking back!

[Staszek]

Oh wow, I didn't realize you were going to paint and all that as well! Don't make it too nice or you won't drive it :D

Driving my car after the Z3 rack swap was amazing. Such an improvement in overall driving feel/experience.

Oh I have no fear of driving it lol!

[R3Z3N]

Thumbs up!