supercharger automatic problem

You need to get a diagnostic readout for the autobox. My guess is that the error will be excessive slip on one of the clutches due to the amount of power going through it.

You may find that in sport mode, the wheels are losing traction and the ECU suspects or senses a wheel speed problem and shuts the transmission into failsafe.

Its just a guess, but what happens in sport if you drive it more sedately?

Alternatively, either the new replacement engine programme is incompatible, or the car just needs reprogramming as an incorrect mixture could also cause the failsafe.

8Tech.

Hi,

please post more info about engine / tranny hardware and who did the software for the DME and EGS?

Modified DME for supercharger setup and OEM tranny EGS could run in a lot of problems especially if over 400hp and 550NM (BMW M60/M62 V8).

thx
firebird

Zitat von TERMINATOR;92268

This happens without losing traction , but the light for losing traction and the abs light is on, all the time..

just saw this post - this is actually a bad sign.

Are you saying whenever you start your car and drive on you have from the beginning both lights on?
what is your rear axle and wheel setup?

OEM hardware for DME and EGS?

firebird

DME er motorstyringen. EGS er girkassestyring. Har bilen orginalsoftware eller er den chippet? Hvis den er chippet, er det byttet både for motor og gir? Hvilken type software er brukt?

In plain english: DME is engine control. EGS is gearboxcontrol. Does the car still have the original sofware or is it "chipped?" If it's chipped, did they change both engine and transmission electronics? What type of sofware was used?

I suspect that you have bought a kit for a E34 540ia am I correct?
this has then been modified to suit the 840.

This kit http://www.esstuning.com/produ…-Supercharger-System.html

This should indicate that you now have a DME chip paired with the ESS kit.
The question is if anything was done to the transmission control unit, and if the new DME sw you have is working correct with your stock transmission controller.

The question regarding the rear axle would be your diff's gear ratio, if that is stock or not, and if you have a limited slip diff or not. I believe you shoud have a 2.93 diff, non-LSD on your car.

DME is as mentioned your engine controller
OEM is original parts
EGS is the transmission control unit (just above your right battery)

I did the same conversion a few years back,the ESS agents in the UK only sent The ECU back to Norway for re programming, the transmition control unit remained untouched, I also had a E34 M5 diff fitted & made no difference to the way the car ran

Zitat von TERMINATOR;92308

When i hade oil service on the gearbox they tok a diagnostic readout. I dont understand much of it, but here it is : (067) 43 knock sensor 4. (041) 29 air-mass flow sensor (hfm). (155) 9b load signal info. (201) c9 oxygen sensor control 1. (041) 29 air-mass flow sensor (hfm). (203) cb oxygen sensor control 2. (067) 43 knock sensor 4. (012) 0c oxygen sensor 2. (104) 68 over-revving lock. (016) 10 rotation speed signal turbocharger. (155) 9b load signal info (150) 96 can time-out 1, ignition on. (02) connection to ads malfunctioning or fault in area of throttle-valve actuator. (06) wheel speed sensor, front right. (05) speed sensor, rear right. hope some of you know what this means , or if you kan see why i have problemes with the gearbox . THANKS FOR ALL HELP.

hi,

way to much errors. delete all and see what comes back.
over reving, CAN time out, wheel speed sensor and speed sensor all are related to ABS/DSC/EGS and could cause a tranny fail mode.

I am not sure with M60 but with M62 you could get issues when you put a DME that is supercharger modified for a 5series or 7 series into a 8series even if the hardware (engine and EGS) is the same. Just to mention different memory content / maps. And even if it worked in one car/year it could run into issues in a different model year. Check with ESS if your modified DME software is designed to run with your OEM EGS software.

For example: If an OEM EGS software detects a non plausible DME number it sets a fault and goes into tranny emergency mode. this could happen if you put a modified chip into your DME with a different software number (the engine would still start and run fine).

that is why I asked for OEM software and hardware number for DME and EGS. Make sure the modified DME chip is working with your OEM EGS software.

I only experienced problems slip/shift related when going over 6-7PSI and setup over 400hp and going higher then 6200rpm. I had to modifiy EGS software as well (EGS 8.55 5HP24).

If you have the 5HP30 - lucky men - this tranny takes way more torque

firebird

Zitat von TERMINATOR;92312

If i need to modifiy EGS software , who can help me and do that ?

hi,
first check, if you really have to do so - if yes - talk to ESS, since they made your kit and also do some EGS programming for other EGSs too.

With your setup (6-7PSi and around 400hp with >550NM) I would run OEM tranny software

firebird

Zitat von TERMINATOR;92314

I have been in contact with Ess more than ones , and he have sendt me a new chip to the dme , dident help, then he sendt me a bigger wheel to the supercharger, dident help, waiting for a new chip to the dme from Ess now, he know my problem very vel, but he cant help me with egs software ..

ok - first check or let ESS or someone else who can read your DME (or memory) if the modified ESS DME chip has same hardware and software number in memory content like your old OEM DME chip.

Did ESS just send you a SC modified E34 540 DME chip or did they read your OEM DME chip and modify this memory content with the maps for the SC setup?

Do you have 5HP30?

firebird