Living with a Supercharged M5 from Discovery Automotive

[bbloch1114]

Originally Posted by jimmyz2

I am glad there is light at the end of the tunnel for you and you are getting things worked out.Regarding the aftercooler doesn't MB also place their aftercooler there?I did not know you were using a piggyback system with extra injectors.I thought RMS burns a custom chip,unless Discovery took it out?

The system is the same RMS or DA -- and yes, they both played with the chip. The second set of injectors all fire at once -- sloppy.

Thanks for the encouragement.

[lwebb12]

Originally Posted by bbloch1114

The system is the same RMS or DA -- and yes, they both played with the chip. The second set of injectors all fire at once -- sloppy.

Thanks for the encouragement.

Do you have any updates?

[bbloch1114]

Originally Posted by lwebb12

Do you have any updates?

Only that the car is at AA. The problems of check engine and so on are fixed -- unfortunately, the original Intercooler design did not have enough coolant in the system (only 1.25 gallons) so the car would get heat-soak really fast and badly and have no power.

At Vortec's recommendation, we increased the capacity to 3.25 gallons by adding a "needed" -- according to Votec -- resoviour. Also, I am having vents installed in the hood to dissapate heat.

When I get it back it may finally be what it was supposed to be. Of course, now that this whole thing has taken so long and cost so much money, I just want to sell the car when it returns and I will. What a HUGE waste of money and time. Good luck to all of you that choose to go this route -- you will be sorry I bet, sorry and down an extra $50K-$60K. If you know anybody who wants to buy it, send me a note in a few weeks -- that's when I will have the car back.

[jimmyz2]

Bill,I am truely sorry it has not turned out well for you with your S/C project.I wonder if the Dinan guys are experiencing any problems similar to yours.Anyways,good luck.

[bbloch1114]

Originally Posted by jimmyz2

Bill,I am truely sorry it has not turned out well for you with your S/C project.I wonder if the Dinan guys are experiencing any problems similar to yours.Anyways,good luck.

Thanks Jimmy -- actually, I'm Bryan, not Bill. I doubt the Dinan version will have any of the same problems once delivered -- they have way more money than DA, AA or RMS and they have a direct and open relationship with BMW. There really can't be any comparison to hat setup.

[lwebb12]

Originally Posted by bbloch1114

Only that the car is at AA. The problems of check engine and so on are fixed -- unfortunately, the original Intercooler design did not have enough coolant in the system (only 1.25 gallons) so the car would get heat-soak really fast and badly and have no power.

At Vortec's recommendation, we increased the capacity to 3.25 gallons by adding a "needed" -- according to Votec -- resoviour. Also, I am having vents installed in the hood to dissapate heat.

When I get it back it may finally be what it was supposed to be. Of course, now that this whole thing has taken so long and cost so much money, I just want to sell the car when it returns and I will. What a HUGE waste of money and time. Good luck to all of you that choose to go this route -- you will be sorry I bet, sorry and down an extra $50K-$60K. If you know anybody who wants to buy it, send me a note in a few weeks -- that's when I will have the car back.

That is a shame.

[jimmyz2]

Originally Posted by bbloch1114

Thanks Jimmy -- actually, I'm Bryan, not Bill. I doubt the Dinan version will have any of the same problems once delivered -- they have way more money than DA, AA or RMS and they have a direct and open relationship with BMW. There really can't be any comparison to hat setup.

Sorry Bryan.I knew your first name started with a "B".

[M5Racer]

Hi All, has anyone considered going with ESS Tuning - I've spoke with them and they are working on releasing a Super Charger for e39 M5.

www.esstuning.com

Let me know.

Thanks.

Originally Posted by shadowman

That was a good comment.

As I recall the situation with Dinan and dyno number was solicited verus attainable. I shared that we saw a variety of numbers during the tuning process all of which were shared and then the resulting numbers which were not the peak numbers, rather those that the car left with.

I would suspect that if the car was placed back on the same dyno with similar conditions the original numbers would reproduced.

My feelings about dyno numbers has always remained the same, interesting but little more.

Shadowman

[bbloch1114]

Originally Posted by M5Racer

Hi All, has anyone considered going with ESS Tuning - I've spoke with them and they are working on releasing a Super Charger for e39 M5.

www.esstuning.com

Let me know.

Thanks.

I went to thier web iste -- it seems like a kit they ship to you. that is too far away for me to buy an out of the box kit. I also con't recall it having a heat exchanger or any kin dof an intercooler set up. I'm not positive, but I don't remember seeing one. And the M5 needs one with a supercharger. In fact, it almost needs one with normal aspiration because of the easily generated heat soak.

Wait a littel longer for the AA kit -- it too will be out of a box, but they use a simple air-to-air system and they will use a simple injectors setup -- eliminating the need for a piggyback computer and they do away with two other "black boxes" that in the past were needed to fool the mass airflow sensors. AA is now controlling the entire system with the stock DME because they have the know-how to modify the stock ECM. When I got my car back from both RMS and DA, it needed these three additional control units plus 8 additional injectors that fired all-at-once to add the fuel the the stock injecotrs could not supply. Now I am going to end up with one set of bigger injectors and one ECM -- the stock DME. To me, that is a much simpler and accurate set up with far less to go wrong. Plus, now if I lost the injector the stock DME would imeedately react and shut off fuel. With my current setup, I would only know if the secondary injectors went when the engine went.

[de Witt]

Originally Posted by bbloch1114

Wait a littel longer for the AA kit -- it too will be out of a box, but they use a simple air-to-air system and they will use a simple injectors setup -- eliminating the need for a piggyback computer and they do away with two other "black boxes" that in the past were needed to fool the mass airflow sensors. AA is now controlling the entire system with the stock DME because they have the know-how to modify the stock ECM. When I got my car back from both RMS and DA, it needed these three additional control units plus 8 additional injectors that fired all-at-once to add the fuel the the stock injecotrs could not supply. Now I am going to end up with one set of bigger injectors and one ECM -- the stock DME. To me, that is a much simpler and accurate set up with far less to go wrong. Plus, now if I lost the injector the stock DME would imeedately react and shut off fuel. With my current setup, I would only know if the secondary injectors went when the engine went.

That is such shoddy design. Piggyback ECUs are garbage. Plus, like you state, the engine could go lean in an instant, which is a big problem with piggyback ECUs. I installed a Autronic ECU on my E28 M5, but looked at piggybacks like Split Second, and those are such trash. The possibility for the mixture to go lean is just way too high.