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Old 01-12-2013, 10:03 PM   #4
Registered User
Join Date: Mar 2009
Location: Australia
Posts: 1,587
My Ride: M3
Originally Posted by ///MPR77 View Post
First off I assume you have no check engine light, as you're not reporting one.

How many miles/Km?

Sounds like a couple of possibilities:

1.Vacuum Leak
Intake boots could have cracks, or not seated properly etc.

2. Fuel pump could be soft failing, and, or relay and filter

3. When you mention sluggish take- offs, I think of cam position sensors, but they would throw a light, and a code. I have experienced sluggish, downright unsafe acceleration, as a result of a failed intake cps (cam sensor)

It could be many things, if you can find someone, perhaps a local fanatic that will scan your OBC for codes, it will help immensely.

Search user jofj and see his SIG for info on your issue.

Good Luck.

Sent from my SCH-R530M using Bimmer App
It definitely isn't unsafe acceleration. Car goes but I got a feeling it's designed like this maybe on purpose to provide a gentle/soft take off if you know what I mean. (if I plant it, it bloody goes hard!)

Also rev drop is very slight...Half a second maybe...maybe I should get my mechanic to lift the revs up a touch and see if that fixes it
Rajvosa is offline   Reply With Quote