79 911 turbo power loss

[traxstudio]

My friend has just bought himself a 79 911 turbo it runs fine until you come to a roundabout,the engine splutters until you straighten up again we have changed one of the fuel pumps that was rather noisy,any thoughts?.

[David]

Some pics of the engine bay might help since I bet there are some changes from stock. Since it's fuel injected, a turn shouldn't affect it. Maybe some thing loose?

[78P930]

Does it matter which way you turn?

[RarlyL8]

Wicked looking car! Never seen anything like that before.
Need more info on the engine/mods to help out. Could it be starving for fuel?

[traxstudio]

i have been informed the engine is an 85' 3.3 turbo, the fault happens in either direction,i will get some photos on mon,he did mention that if you dip the clutch then boot it its ok,(related i dont know!).

[traxstudio]

hope these photos help,we are going through to glasgow this week to put it on a rolling road to see if they can help.

[traxstudio]

[Emission]

As far as I can see, the engine looks pretty stock. The other pic shows the exhaust isn't...

[john walker's workshop]

something like an electrical connection or ground may be loosing it's connection. check grounds at the battery to body and trans to body, and both battery clamps. be sure the + clamp isn't contacting the body.