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Author Topic: Flat spot at 5200rpm on 2.0T - Does yours do it?  (Read 77096 times)

Offline Poverty

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Flat spot at 5200rpm on 2.0T - Does yours do it?
« on: November 18, 2009, 08:27:18 pm »
Copy and pasted from SCN, just want to see what the response is on this site.

I am interested to know just how many VAG 2.0T's have the 5200rpm "flat spot".

What basically happens is that the car pulls cleanly to 5200rpm at which point it may hesitate/stop pulling as hard for approx 500-750rpm then pull again after that. In an S3 I know of, it was described as feeling as if the car drops in to limp mode at 5200rpm until approx 6000rpm at which point it begins to pull again.

Ta

Horace

Offline NB07

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #1 on: November 18, 2009, 08:36:40 pm »
mines good all the way through the revs but its not often i really boot it on normal roads because of speed limits  :chicken:
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Offline Janner_Sy

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #2 on: November 18, 2009, 08:38:47 pm »
what map is that. had exactly the same when i had my bluefin stage 2+ installed. I had two of said flat spots, 4.5k and aobout 5.2-5.5k.

this new map has solved that no more flat spots :happy2:

Offline jonnyc

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #3 on: November 18, 2009, 08:41:37 pm »
Copy and pasted from SCN, just want to see what the response is on this site.

I am interested to know just how many VAG 2.0T's have the 5200rpm "flat spot".

What basically happens is that the car pulls cleanly to 5200rpm at which point it may hesitate/stop pulling as hard for approx 500-750rpm then pull again after that. In an S3 I know of, it was described as feeling as if the car drops in to limp mode at 5200rpm until approx 6000rpm at which point it begins to pull again.

Ta

Horace

I would say check all of the normal stuff first..

Plugs
PCV
DV
Fuel pump cam follower

Then Panic!  :scared:  :wink:
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Build thread http://www.vagoc.co.uk/vb/showthread.php?t=3128

Offline Janner_Sy

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #4 on: November 18, 2009, 08:50:43 pm »
plugs are on my list now. the rest are all new

Offline jonnyc

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #5 on: November 18, 2009, 08:54:11 pm »
plugs are on my list now. the rest are all new

What map is on the car?
APR Stage III TT-RS - 11.37 1/4 mile - 2.82 0-60 MPH

Build thread http://www.vagoc.co.uk/vb/showthread.php?t=3128

Offline Janner_Sy

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #6 on: November 18, 2009, 09:00:37 pm »
custom one by shark performance

Offline jonnyc

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #7 on: November 18, 2009, 09:14:55 pm »
custom one by shark performance

Has it always done it? Or developed slowly.. Or suddenly appeared?
APR Stage III TT-RS - 11.37 1/4 mile - 2.82 0-60 MPH

Build thread http://www.vagoc.co.uk/vb/showthread.php?t=3128

Offline Janner_Sy

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #8 on: November 18, 2009, 09:18:58 pm »
got it when i went to stage 2 bluefin, and it was still there with stage 2+ but thankfully have gone now.

just waiting for before and after logs to come back from when i had the remap done. it might shed some light.

Offline bacillus

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #9 on: November 18, 2009, 09:21:22 pm »
IMO you need to log the car looking at boost, fuel rail pressure and timing pull at minimum.
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Offline jonnyc

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #10 on: November 18, 2009, 09:24:05 pm »
IMO you need to log the car looking at boost, fuel rail pressure and timing pull at minimum.

Yeah if you just do some logs on requested and actual boost and timing pull and engine load etc that will shed some light on it..

Or just get Revo to map it  :wink:
APR Stage III TT-RS - 11.37 1/4 mile - 2.82 0-60 MPH

Build thread http://www.vagoc.co.uk/vb/showthread.php?t=3128

Offline Janner_Sy

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #11 on: November 18, 2009, 09:26:18 pm »
IMO you need to log the car looking at boost, fuel rail pressure and timing pull at minimum.

yeah we took logs of all that and more iirc. before on stage 2+ bluefin. and after on shark performance.

waiting for ben to sort all the graphs out for me and email them through

Offline Poverty

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #12 on: November 18, 2009, 10:33:08 pm »
IMO you need to log the car looking at boost, fuel rail pressure and timing pull at minimum.

Yeah if you just do some logs on requested and actual boost and timing pull and engine load etc that will shed some light on it..

Or just get Revo to map it  :wink:

The 6 cars that are known by the SCN member to have the flat spot are all running revo. 1 stage 2, the rest all stage 2 plus  :scared:

Offline Top Cat

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #13 on: November 18, 2009, 10:43:24 pm »
Wasnt there a batch of 08, S3's doing the same thing a while back.

Offline Hurdy

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Re: Flat spot at 5200rpm on 2.0T - Does yours do it?
« Reply #14 on: November 18, 2009, 11:54:44 pm »
This sounds suspisciously like Nadeem's issue (Illyun)

There's a ton of info on it and he ended up dropping back from stage 2+ to stage 2. Strangely only affects certain cars and isn't particularly specific to manual or DSG either. Mine has been fine, but I think it was tending to be later cars from 57 reg onwards that suffered more.

http://www.mk5golfgti.co.uk/forum/index.php?topic=3242.0
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