Rough cold start with 35is

[Z4M-2006]

Is it bringing EML on ?

Coil packs or vanos actuators would be my next thing..

 

[Smartbear]

HPFP was replaced yesterday. Ignition is now much faster and better. Starts after first crank. No error codes while accelerate. Total cost was about 950 €/ $1120 / £850.

Still noticed vibration when tried to accelerate uphill with 7th gear from 40 mph to 60 mph. More in here http://www.z4-forum.com/forum/viewtopic.php?f=45&t=89585

That sounds a very low speed to be in 7th & accelerating uphill, maybe the vibration is just the engine labouring at such low rpm?
Rob

 

[Ozie]

Is it bringing EML on ?

Coil packs or vanos actuators would be my next thing..

Nope. No codes or lights.

 

[Ozie]

HPFP was replaced yesterday. Ignition is now much faster and better. Starts after first crank. No error codes while accelerate. Total cost was about 950 €/ $1120 / £850.

Still noticed vibration when tried to accelerate uphill with 7th gear from 40 mph to 60 mph. More in here http://www.z4-forum.com/forum/viewtopic.php?f=45&t=89585

That sounds a very low speed to be in 7th & accelerating uphill, maybe the vibration is just the engine labouring at such low rpm?
Rob

It's way more rough. You'll get that wtf feeling when it hits. Bit like hitting rev limiter or wheel spin dsc engadged (no dsc lights) by suprise.