[Pyrat_1M]

Originally Posted by Socket

making progress

Any pics of the finished boot build?

[Socket]

ST LOW MOUNT - COMPLETED

Has been quite a while since updating this thread, but that said hardly anyone visits the E90post forum any more. For those who have been following along. The modding still continues

After a good 18 month journey the low mount single turbo is finally installed and running. Once again all due to dedication, skill and genius that is Vincent Lim. (thank you mate)

Pics below

[Coupes33]

Hi Phil. Your not wrong when you say no one looks at this E90 Australia Forum anymore. The new low slung ST looks stealth as you cannot see too much compared to your previous arrangement. Vince has done an excellent job once again. Is there any different in performance or noise from the engine compartment. What coils are you running now? Are they the B58 coils. I see on Page 1, you state Bimmerlife coils but that not them.

[eastsidaz]

Originally Posted by Socket

ST LOW MOUNT - COMPLETED

Has been quite a while since updating this thread, but that said hardly anyone visits the E90post forum any more. For those who have been following along. The modding still continues

After a good 18 month journey the low mount single turbo is finally installed and running. Once again all due to dedication, skill and genius that is Vincent Lim. (thank you mate)

Pics below

Been wondering about this Great to see it finished up.

This would be my dream setup. Good work!

[Socket]

Originally Posted by Coupes33

Hi Phil. Your not wrong when you say no one looks at this E90 Australia Forum anymore. The new low slung ST looks stealth as you cannot see too much compared to your previous arrangement. Vince has done an excellent job once again. Is there any different in performance or noise from the engine compartment. What coils are you running now? Are they the B58 coils. I see on Page 1, you state Bimmerlife coils but that not them.

Hey Coupes. So nice to see you name pop up again !!! Page 1 update (sry about that) Yep very quite in here (tumble weed rolls by) hahaha. Yes Vince did an amazing job. Still needs Tim to do his tuning magic but otherwise, the low mount is great. Performance wise, it pulls better and is probably 10% smoother due to the old set up having a long term boost leak and damaged turbine blades. Sound wise not much difference. Can still hear the turbo spool and BOV sounds The major advantage is heat management. No more melted coils etc. Had to replace the bimmerlife coils with the B58s simply because they were cooked. Car is running really nice expect for a long crank when hot. Be interested to see how it goes on the dyno when Tim gets the tune properly dialled in. Nice to hear from you again mate. Have you still got your car? If not what are you driving now??

[Socket]

Originally Posted by TiAgAu

Been wondering about this Great to see it finished up.

This would be my dream setup. Good work!

Hey mate..... yes was quite a drawn out project but got there in the end Highly recommend a low mount over a top mount, if you ever go down the ST rabbit hole

[Torgus]

Looks sweet! Thanks for the update.

[Coupes33]

Originally Posted by Socket

Hey Coupes. So nice to see you name pop up again !!! Page 1 update (sry about that) Yep very quite in here (tumble weed rolls by) hahaha. Yes Vince did an amazing job. Still needs Tim to do his tuning magic but otherwise, the low mount is great. Performance wise, it pulls better and is probably 10% smoother due to the old set up having a long term boost leak and damaged turbine blades. Sound wise not much difference. Can still hear the turbo spool and BOV sounds The major advantage is heat management. No more melted coils etc. Had to replace the bimmerlife coils with the B58s simply because they were cooked. Car is running really nice expect for a long crank when hot. Be interested to see how it goes on the dyno when Tim gets the tune properly dialled in. Nice to hear from you again mate. Have you still got your car? If not what are you driving now??

Yes Socks, I still have the 335i. I had a 8HP75 transmission installed and got it down to 10.6s on 20psi boost and e30 fuel. The transmission is great for driving around town and quicker down the strip. I also have a M240i Xdrive G42 with no mods which is a pleasure to drive. How do you find the B58 coils? My BL R8 coils started to play up so I am back to the OEM coils currently. They worked ok when I did the 10.6 so I haven't bothered replacing them as yet.

[Socket]

Originally Posted by Coupes33

Yes Socks, I still have the 335i. I had a 8HP75 transmission installed and got it down to 10.6s on 20psi boost and e30 fuel. The transmission is great for driving around town and quicker down the strip. I also have a M240i Xdrive G42 with no mods which is a pleasure to drive. How do you find the B58 coils? My BL R8 coils started to play up so I am back to the OEM coils currently. They worked ok when I did the 10.6 so I haven't bothered replacing them as yet.

Nice Coupes, 10.6 is flying mate, congrats...... Haven't done much driving on the B58 coils tbh. I have a long crank thing going on. Funny things is the long crank is only when starting the engine warm. We have logged it but everything looks normal (fuel pressures etc etc). Taking it over to Eastern BM in a couple of weeks when they have some time to fit me in. Meanwhile trying not to drive it too much until the problem is sorted.

[Coupes33]

Originally Posted by Socket

Nice Coupes, 10.6 is flying mate, congrats...... Haven't done much driving on the B58 coils tbh. I have a long crank thing going on. Funny things is the long crank is only when starting the engine warm. We have logged it but everything looks normal (fuel pressures etc etc). Taking it over to Eastern BM in a couple of weeks when they have some time to fit me in. Meanwhile trying not to drive it too much until the problem is sorted.

There always appears to be some issues with our cars these days. It may have something to do with their age but I am chasing an ABS issue currently. Did your long crank start after installing the B58 coils? There maybe a spark issue with them once they heat up.

[Torgus]

Originally Posted by Coupes33

There always appears to be some issues with our cars these days. It may have something to do with their age but I am chasing an ABS issue currently. Did your long crank start after installing the B58 coils? There maybe a spark issue with them once they heat up.

Yeah that is my vote. The Coils. I would reseat them all...at a minimum.

Air fuel spark you need all 3. I assume you have plenty of air and fuel in your cylinder.

People have made 750whp on eldor coils etc. While I understand the advantage or the higher power coils, they are not required. 'Inexpensive' coils should work fine for you.

[Socket]

Originally Posted by Coupes33

There always appears to be some issues with our cars these days. It may have something to do with their age but I am chasing an ABS issue currently. Did your long crank start after installing the B58 coils? There maybe a spark issue with them once they heat up.

Cant remember if the long crank was there b4 installing the new coils, but worth looking into. Would explain why the logs look normal

[Socket]

Originally Posted by Torgus

Yeah that is my vote. The Coils. I would reseat them all...at a minimum.

Air fuel spark you need all 3. I assume you have plenty of air and fuel in your cylinder.

People have made 750whp on eldor coils etc. While I understand the advantage or the higher power coils, they are not required. 'Inexpensive' coils should work fine for you.

Never thought of that Torgus. Ill put in some stock coils and see if the problem goes away. Thanks for the suggestion mate

[Socket]

Originally Posted by Torgus

Yeah that is my vote. The Coils. I would reseat them all...at a minimum.

Air fuel spark you need all 3. I assume you have plenty of air and fuel in your cylinder.

People have made 750whp on eldor coils etc. While I understand the advantage or the higher power coils, they are not required. 'Inexpensive' coils should work fine for you.

Swapped back to OEM coils and reflashed tune
No difference, long crank persists

[Seattlesquash]

Did you get it sorted?

[Socket]

Originally Posted by Seattlesquash

Did you get it sorted?

No mate
No one can work out what is causing the long crank.

Logs all look fine
Swapped out the coils and went back to oem
Replaced the starter motor, sparks, sensors etc
Then we thought it might be a tuning problem, so Tim sent through a few updates but nothing has made a difference
Guess Ill have to wait until it fails completely

[Torgus]

Originally Posted by Socket

No mate
No one can work out what is causing the long crank.

Logs all look fine
Swapped out the coils and went back to oem
Replaced the starter motor, sparks, sensors etc
Then we thought it might be a tuning problem, so Tim sent through a few updates but nothing has made a difference
Guess Ill have to wait until it fails completely

So weird. And no issues at WOT etc?

All I can think of if the coils are not it would be injectors. Too much or too little fuel injected while cranking.

Air fuel spark.

You got air(I assume the TB is not closed and obviously the valves in the head are fine)
You got spark
You got fuel.

how annoying.

[Seattlesquash]

Originally Posted by Socket

No mate
No one can work out what is causing the long crank.

Logs all look fine
Swapped out the coils and went back to oem
Replaced the starter motor, sparks, sensors etc
Then we thought it might be a tuning problem, so Tim sent through a few updates but nothing has made a difference
Guess Ill have to wait until it fails completely

Man, super frustrating, fuel pump/regulator holding pressure? Sorry to hear

[Socket]

Originally Posted by Torgus

So weird. And no issues at WOT etc?

All I can think of if the coils are not it would be injectors. Too much or too little fuel injected while cranking.

Air fuel spark.

You got air(I assume the TB is not closed and obviously the valves in the head are fine)
You got spark
You got fuel.

how annoying.

Yep Torgus, no issues running or at WOT at all
No smell of fuel in the engine bay which would indicate a leaky injector or something
Logs look great, rail pressures etc are fine blah blah
Have upped the fueling on start by 20% and have increase the idle rpm to 1000 in the tune
Have replaced the starter motor, sparks and sensors
Nothing has helped

Funny it starts up fine when cold.
Only has a long crank once its warm or after it has been started
Almost like its getting too much fuel so when it sits for a while it flashes off and starts up ok
But when its warm or something its like the engine is flooded and takes a while to kick in...... dunno
I am running a flex fuel system in it and in MHD it is reading 10% ethanol even though the fuel in the tank is just regular 98, so there might be a clue there

Meanwhile once it starts it is running fine, so hmmmm very strange

[Socket]

Originally Posted by Seattlesquash

Man, super frustrating, fuel pump/regulator holding pressure? Sorry to hear

Yes mate.... afaik they all tested fine

But no stress mate... is just part of N54 life haha

[Coupes33]

It is certainly a strange fault you are having Socks. On a cold start, the DME doesn't do anything with the information coming from the O2 sensors. Once the engine has been started and run for a couple of minutes, on all following starts, the DME does use the O2 sensor information along with information from the MAP and MAF sensors and so forth. There appears to be something from this information that is causing the issue. A faulty crank sensor could be possible cause.

[Socket]

Originally Posted by Coupes33

It is certainly a strange fault you are having Socks. On a cold start, the DME doesn't do anything with the information coming from the O2 sensors. Once the engine has been started and run for a couple of minutes, on all following starts, the DME does use the O2 sensor information along with information from the MAP and MAF sensors and so forth. There appears to be something from this information that is causing the issue. A faulty crank sensor could be possible cause.

Interesting Coupes I did not know that .. Crank sensor has been replaced, was one of the first things checked out. But could be something to do with the O2s etc...... yes is very strange... Even has Jin and the team at Eastern BM stumped.... Vince thinks its tune related and not mechanical. It would be nice to know whats causing it for sure