BMW E30 M20 VEMS,turbo

[gox]

any theoretical explanation why my engine needs such a retarded ignition?  :-\

[AVP]

none i can think of. It looks like it is as Gintis says. Audi may be an exception.
i use 98 pump gas and have 20Deg on 280kpa and 18deg on 306kpa on around 9:1 compression and it seems to be fine! Much richer mixture (about 0.75-0.73 on high revs) but pulls like a train and no knock.

[gox]

Well this one pulls hard too...i`m drifting with it in 3rd gear...fast and slow tracks,no different.
I`m going to install H1E over the winter,its much smaller then this huge Schwitzer S3,so i hope i`ll see boost somewhat earlier ;) 

[gox]

Today i removed the huge Schwitzer and the Holset will sit in its place...
I would like to update the firmware since i`m running on old 1.0.73 with not a single problem,but i've been reading firmware updates and i noticed there are a lot of improvements.

I`m not a completly noob but i`m also not a electronic expert so i would like some advices on what firmware to use on my setup.I would like to add the boost control via simple MiscOut since i use this car only for drift and i dont need any special boost control,i just want it reliable and working without problems,untill now i didnt had any type of boost control,my wastegate spring holds 0.8bar and thats what i was running  ::)
I`m also planning to switch back to wastespark and see if i`m going to get IGBT's blown again...at the end i may purchase and V3 harness from webshop to try to solve blowing igbt's problem.

Any help and suggestions are welcome :)

Tnx guys

[gunni]

I mapped alot of M20´s turbo on 1.1.44alpha2

running the pwm map for boost control made boost control real easy.

[gox]

i`ll give it a try...

tnx ;)

[AVP]

which holset are you trying? let us know the results!

[gox]

Its H1C,looks really small comparing to a huge Schwitzer S3 :)

shure,i`ll post up results

[gox]

Car is up and running with Holset,didnt droved it yet except 1st and 2nd gear and turbo response seems much quicker,2nd gear at  ~3000rpm when i go WOT (i hold pedal for arround 3-4 seconds
) i momently have boost ~0.3-0.4 and raising,Schwitzer had 0.5-0.6bar at around ~4500-5000rpm in 2nd gear.

This weekend i`ll go test the car and see if i need a remap and i will post the logs...

:)

[gox]

Turbo survived one drift event :) 3 days of drifting at WOT,everything works great....
One thing that is odd is the EGT,as soon as i start the car EGT start to rise up from 400C to 1250 and then it stops on 1250C and it stands there.EGT sensor is mounted at the exhaust pipe on the 6cyl.
Ignition was not remaped....i only retuned the VE values to match the lambda target,even before (with old big turbo) i noticed that the EGT sensor doesnt realy like this position (my opinion) since the pipe of the exhaust has a thick pipe wall and i thing that the sensor is not showing the real value (it rises up even on idle when i have lambda 0.95 constantly)...I was thinking about putting the sensor under the turbo flange (at the collector),what do you guys think about this position? I saw several cars at drift that use that EGT sensor position.Do i need to retard the ignition with the smaller turbine housing (earlier it was huge Schwitzer S3 now i have H1C with 16cm2 housing)?

[gunni]

If it´s been at WOT for 3days and not dead yet then no you don´t need to retard ignition.

I don´t know what purpose it should serve to move the sensor as it should be showing temps , so if it´s showing more then 1250C
then that is the temp unless there is a problem with the sensors wiring(most likely)

[gox]

well i dont know what can be wrong with wiring... its on the panel mount connector,my coolant temp is ok,max i saw is 95C but i removed the heater radiator,so i have less water in the system,but i have bigger cooler + electric fan.

I`ll check the sensor calibration,on the bigger turbo i never saw above 900C...dont know if smaller turbo reacts somehow on the EGT?

[mattias]

Your EGT sensor or wiring is broken.

[gox]

i`ll check it tomorrow and report back,thanks...

[gox]

http://www.youtube.com/watch?v=vJh4gvixLyM