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  #11  
Old 05-21-2024, 07:47 AM
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Quote:
Originally Posted by andrewwynn View Post
Code:
 I never updated this particular thread on this topic but I ended up abandoning this project. The bigger roadblock I run into is that cars are not prewired for it: this doesn't mean it can't be done but it would require a lot more work that I'm willing to spend on this.

You'd basically have to recreate the whole wiring: based on WDS there are some connection in the front of the car, some in the trunk, then run the wire to the pump under the car... Way too much work for me. And after is all done the unknown of the coding remains...
Found this in e70 thread. This is my prime concern. I searched a bit for a thread where somebody did this and had no luck.

I've seen in the past where somebody reverse an air spring delete.

If you find that thread you'd find most of what you need to know if you find that e53 unlike e70 were prewired for air possible. (I think the odds are fair this is the case. I used to find capped off wiring quite regulatory on my e53s).

For inspiration;

https://xoutpost.com/bmw-sav-forums/...uspension.html
interesting, so coding is possibly the only concern which can be taken care of fairly easily i assume. hopefully thursday i'll finally be able to dig more into it
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  #12  
Old 05-21-2024, 05:31 PM
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nick325xit 5spd is on a distinguished road
It's worth noting that the coil spring suspension actually holds cargo and/or tows quite well.

I'd say that the primary benefit on the E53 is probably actually ride quality, and you really want the 4-wheel air for that. (I've considered it, but haven't been sufficiently motivated.)
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  #13  
Old 05-21-2024, 10:28 PM
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I too tow with a four-wheel-coil car and I haven't experienced any sagging in the rear. It's the most stable car I have ever towed with, in fact. I do use a WDH though.
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  #14  
Old 05-21-2024, 10:53 PM
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new to me 05 6spd got some questions

When I'm loaded and towing my coil car is pretty sagged but toughed it out.

The one time I really really missed the air was when I put 500# on my tail rack and still had maybe 700# inside! That was a slow ride home from home Depot!

Other than the 3-4 times when really loaded the springs have been perfectly fine and the car rides nicer than my wife's old X5 that had rear air front spring.

I think what I need is just a preload shock or something to give some extra support just when loaded down.
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  #15  
Old 07-18-2024, 07:43 PM
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got back from a 1700 mile camper trip. camper is a friends that I borrowed and is a bit large for the m54. 3500lb dry weight and shaped like a brick. probably had another 1300lbs of cargo and people inside. managed to maintain 65mph on the flats in 5th gear, 4th up the hills and 6th down hill. got 11mpg avg.

Untitled by tim wilson, on Flickr

Untitled by tim wilson, on Flickr

Untitled by tim wilson, on Flickr

also plugged in the air pump for the rear airride to see it if will power up without coding and it didnt. also found out it has a RR level sensor but the LR sensor isnt there. I did however find the harness tucked above the plastic arch

Untitled by tim wilson, on Flickr'

Untitled by tim wilson, on Flickr
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  #16  
Old 07-18-2024, 10:03 PM
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know your vehicle's limits, and watch out for overloading!

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Originally Posted by freedo View Post
got back from a 1700 mile camper trip. camper is a friends that I borrowed and is a bit large for the m54. 3500lb dry weight and shaped like a brick. probably had another 1300lbs of cargo and people inside. managed to maintain 65mph on the flats in 5th gear, 4th up the hills and 6th down hill. got 11mpg avg....
My wife used to do "catastrophe insurance adjusting" and bought a 2007 Palomino Puma 20QB to have her own housing while doing her insurance work. It worked out fine, being towed behind her '98 GMC Sierra 1500 pickup (which we still have), that had/has the 5.7L V8, 4L60E transmission, 3.73 rear gears, and had the engine power boosted via a custom tune, bigger injectors, etc., and the transmission custom built for towing just before we bought it from my race-car building friend. It also had the light 1500 springs replaced with new 2500 springs.

As I stated, it was a good combo, until she took a 2-month business trip up to Minnesota, driving thru the Ozarks and Missouri, where she visited with relatives on both ends of the trip. On the way back, she called me to complain about the truck having trouble going up hills...no power... so she had to often drop it down into second at times. That worried me, but I couldn't travel up there to see, so I had to wait until she got back to check the truck out.

It turned out that she had been collecting antiques (junk) on the trip, and had stuffed the bed of the truck full, as well as half the trailer. As if that wasn't enough, when I looked into the cross-body storage in the nose of the trailer, it was jam-packed full of "interesting" rocks that she had also collected in the hills of Missouri. The truck wa probably 1000 lbs overweight, and the little trailer even more so. No wonder the truck wasn't as peppy as it should've been. No report on the gas mileage, though.

I made sure that she understood NEVER to repeat the overloading mistake on any future trips (there were only a couple more trips, using her truck & trailer, and thereafter several more via her '08 Cobalt Coupe, without trailer, before she switched jobs...Hurricane Sandy did her in). She still overpacks for even overnight trips to her mother's ranch, only 45 miles away...some people never learn. Kids!!! (she's 14 years younger than I)
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  #17  
Old 07-20-2024, 07:31 AM
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Man that's awesome. Looks like a really nice weekend. Very encouraging to see the m54 pulling something like that. I hope it can handle a small trailer with a gutted e36.

Do you think that rear door dent will pop out? Curious what you're going to do about that one. Mine has some similar love taps. I don't understand how people hit things..
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  #18  
Old 07-20-2024, 03:27 PM
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A PDR guy can get the rear door dents out

The dent in the rear corner is worse…


All of em are badges of honor, I say…
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  #19  
Old 07-20-2024, 05:17 PM
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Originally Posted by Effduration View Post
A PDR guy can get the rear door dents out

The dent in the rear corner is worse…

All of em are badges of honor, I say…
Some badges of honor are tough to swallow.. I’m just saying’.. LoL..


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  #20  
Old 07-21-2024, 11:09 AM
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The rear door dimple should easily pop out. You have remove the door panel and raise the window. It's what I would try. As for the smaller ones, I agree. A DPR specialist can take them out. Mine has one where I can reach it. Tools are needed to pop it out.
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