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Old 5th October 2005, 15:51   #1
AGIL
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M5 3.8 upgrades

Gentleman,

Your comments and advice is much appreceiated. I recently purchased a 94' 3.8 M5 with 59K miles on it from a friend. I really enjoy the car and after some investment and care it is running really well.

I do need some advice on suspension. It is gone and I do have EDC and Self-Leveling. I do not want to lower the car anymore but I do want a better firmer sporty ride. Since the work will be done, i figured to swap out the springs as well. What should I do? Eliminate SLS, and go with an adjustable Koni set-up and 535 springs?

Lastly, I would like to add a chip to my car. Which chip is the best, I want low-mid range power. I heard that chipping a 3.8 is dangerous and cause the engine to blow at 7200RPMs.

Any advice will be good, much appreciated.

Andrew
Ft. Lauderdale
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Old 5th October 2005, 15:59   #2
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Re: M5 3.8 upgrades

Quote:
Originally Posted by AGIL
Gentleman,

Your comments and advice is much appreceiated. I recently purchased a 94' 3.8 M5 with 59K miles on it from a friend. I really enjoy the car and after some investment and care it is running really well.

I do need some advice on suspension. It is gone and I do have EDC and Self-Leveling. I do not want to lower the car anymore but I do want a better firmer sporty ride. Since the work will be done, i figured to swap out the springs as well. What should I do? Eliminate SLS, and go with an adjustable Koni set-up and 535 springs?

I hear Koni are good, although if you are not using on the track the EDC's are excellent, I have the EDC's still, with HR springs - I love it!


Lastly, I would like to add a chip to my car. Which chip is the best, I want low-mid range power. I heard that chipping a 3.8 is dangerous and cause the engine to blow at 7200RPMs.

If you are worried about this like I am now (I found out the hard way - but mine could have been due to other undiscovered engine problems) - go the UNICHIP route, this is a piggy back system, and is tuned on the dyno machine to your cars specific outputs. If you want more power - get the Schrick cams.

Regarding chips though - I hear Dinan are very good and so is Jim Comforti. Dinan can do the suspension work too I believe.

Any advice will be good, much appreciated.

Andrew
Ft. Lauderdale
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Old 5th October 2005, 16:43   #3
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Re: M5 3.8 upgrades

Quote:
Originally Posted by AGIL
Gentleman,

Your comments and advice is much appreceiated. I recently purchased a 94' 3.8 M5 with 59K miles on it from a friend. I really enjoy the car and after some investment and care it is running really well.

I do need some advice on suspension. It is gone and I do have EDC and Self-Leveling. I do not want to lower the car anymore but I do want a better firmer sporty ride. Since the work will be done, i figured to swap out the springs as well. What should I do? Eliminate SLS, and go with an adjustable Koni set-up and 535 springs?

Lastly, I would like to add a chip to my car. Which chip is the best, I want low-mid range power. I heard that chipping a 3.8 is dangerous and cause the engine to blow at 7200RPMs.

Any advice will be good, much appreciated.

Andrew
Ft. Lauderdale

Andrew
If I were you, Id stick with Fixing the EDC. When working, its a brilliant system which will be more than firm enough when you need it but compliant at cruising speeds in a straightline.

Dont go sticking Konis on with 535 springs.
Thats no set up for an M5 & your body control will be at odds with the damper rates.

If you are determined to dump the EDC & SLS which is fantastic when working, then get a complete Spring & damper kit with bushes etc from Dinan or Hartge.

At the very worst, get new M5 springs fr & rr from BMW & get a set of Konis valved to suit the M5.

Engine chips that extend the the useable rpm limit are a time bomb waiting to go off.
Thats not the case with Dsylva & Conforti. Midrange perfection is what these guys strive for with std engine configuration.
Search the forum & all will become clear. You should be able to make up your mind then.

Farrell

Last edited by farrell; 5th October 2005 at 16:47.
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Old 5th October 2005, 16:57   #4
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Re: M5 3.8 upgrades

Quote:
Originally Posted by farrell
Andrew
If I were you, Id stick with Fixing the EDC. When working, its a brilliant system which will be more than firm enough when you need it but compliant at cruising speeds in a straightline.

Dont go sticking Konis on with 535 springs.
Thats no set up for an M5 & your body control will be at odds with the damper rates.

If you are determined to dump the EDC & SLS which is fantastic when working, then get a complete Spring & damper kit with bushes etc from Dinan or Hartge.

At the very worst, get new M5 springs fr & rr from BMW & get a set of Konis valved to suit the M5.

Engine chips that extend the the useable rpm limit are a time bomb waiting to go off.
Thats not the case with Dsylva & Conforti. Midrange perfection is what these guys strive for with std engine configuration.
Search the forum & all will become clear. You should be able to make up your mind then.

Farrell
That advice sounds great! Thanks it is much apprecited. Yeah I will probably go ahead and stay stock (but it is very expensive) at leat I will stay with the stock springs and go with the Konis.

The chip advice sounds good, and that is what I want mid range power, not top speed and red line capabilities.

I do search the forums many of them and cross reference people and statements and it becomes confusing at times and I decide to start this thread to get fresh ideas, to deliberate on my own.


Again, thanks!
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Old 5th October 2005, 21:30   #5
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Re: M5 3.8 upgrades

Quote:
Originally Posted by AGIL
I will stay with the stock springs and go with the Konis
You could try, but the back springs will be very low & soft. The rear spring of an SLS-car is too soft and short to work without the SLS damper.
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Old 6th October 2005, 11:53   #6
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Re: M5 3.8 upgrades

Koni's with H&R springs have been very rated by those who have removed the EDC system.

Both are quality components.

The total cost is £700 from myself.

The one thing about the H&R springs is the ride comfort - its brilliant! Its no harder than stock to be honest.

Last edited by Cyrus; 6th October 2005 at 11:54.
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Old 6th October 2005, 12:54   #7
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Re: M5 3.8 upgrades

Quote:
Originally Posted by AGIL
Gentleman,

Your comments and advice is much appreceiated. I recently purchased a 94' 3.8 M5 with 59K miles on it from a friend. I really enjoy the car and after some investment and care it is running really well.

I do need some advice on suspension. It is gone and I do have EDC and Self-Leveling. I do not want to lower the car anymore but I do want a better firmer sporty ride. Since the work will be done, i figured to swap out the springs as well. What should I do? Eliminate SLS, and go with an adjustable Koni set-up and 535 springs?

Lastly, I would like to add a chip to my car. Which chip is the best, I want low-mid range power. I heard that chipping a 3.8 is dangerous and cause the engine to blow at 7200RPMs.

Any advice will be good, much appreciated.

Andrew
Ft. Lauderdale
Hi!
I presume that you are aware of that you need to get New/second hand damper struts from a 3.6 M5 or 535 to be able to eliminate the EDC as the EDC Damper/struts are intergrated so you can`t use new inserts on them?


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Old 6th October 2005, 14:50   #8
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Re: M5 3.8 upgrades

Yes, I am aware that I would need to change the struts. This is why I am asking for all of your opinions. It is probaly best that I just stick with the stock parts and leave it at that. Once the shocks are swapped out, I will see if the EDC actually works. And if not anti up for that too!

This is becoming an expensive hobby....now I know why you guys make comments about the wives being jealous.

AJG
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Old 6th October 2005, 16:26   #9
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Re: M5 3.8 upgrades

Quote:
Originally Posted by AGIL
Yes, I am aware that I would need to change the struts. This is why I am asking for all of your opinions. It is probaly best that I just stick with the stock parts and leave it at that. Once the shocks are swapped out, I will see if the EDC actually works. And if not anti up for that too!

This is becoming an expensive hobby....now I know why you guys make comments about the wives being jealous.

AJG
----------------

yep - I am now TOTALLY banned from talking about anything remotely resembling an automotive vehicle.
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Old 6th October 2005, 16:45   #10
AGIL
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Re: M5 3.8 upgrades

Quote:
Originally Posted by Jahangeer
----------------

yep - I am now TOTALLY banned from talking about anything remotely resembling an automotive vehicle.
Yeah, I can see that with you, I have seen a lot of your posts and with a blown engine and all I can see why......

I am sure that mandate will come next for me once my wife finds out that a suspension will cost me about $4K....
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