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Author Topic: Flat spot  (Read 13082 times)

Offline Russ_leeds

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Flat spot
« on: February 20, 2011, 10:24:39 pm »
Since i fitted my itg last week ive noticed a flat spot at around 5k. what could be the cause of this? will the map need adjusting? i thought the maf would adjust accordingly? or could it be something like the dv as it is running 260bhp and 312ftlb :evilgrin:
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Offline keano

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Re: Flat spot
« Reply #1 on: February 20, 2011, 10:27:50 pm »
Is this a k03 turbo?
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Offline vRS Carl

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Re: Flat spot
« Reply #2 on: February 20, 2011, 10:29:24 pm »
Could be a whole number of reasons.

Ideally you need to log the car to find what it's doing at that rpm
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Offline Russ_leeds

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Re: Flat spot
« Reply #3 on: February 20, 2011, 10:42:14 pm »
yeah k03 mate
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Offline vRS_Pagey

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Re: Flat spot
« Reply #4 on: February 21, 2011, 12:49:03 pm »
I had a flat spot which got progressively worse across the rev range, this was months after the remap so it wasn't that.........

After some logging it was diagnosed as a knackered DV - you can see from the picture it doesn't look healthly - its a different car now, and they are only 50ish quid from the stealer for the piston type revision 'D'.  :happy2:





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Offline edd666999

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Re: Flat spot
« Reply #5 on: February 21, 2011, 02:02:32 pm »
whos the map with?
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Offline joesgti

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Re: Flat spot
« Reply #6 on: February 21, 2011, 02:25:26 pm »
could be a number of things, i had a flat spot at 5k for about 12 months on my old gti, changed all the sensors and did logs and still couldnt find it, so i put an edition 30 engine in it and found out once the engine was removed that the turbo had cracked.  :driver: :rolleye:
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Offline Russ_leeds

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Re: Flat spot
« Reply #7 on: February 21, 2011, 03:58:49 pm »
the map is a stage 1 map from pdt. it ran 258bhp and 312ftlb on his dd rollers. ive only noticed the flat spot since fitting the maxogen
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Offline Britishlion

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Re: Flat spot
« Reply #8 on: February 21, 2011, 04:03:28 pm »


If it is a "custom map" from PDT would the settings not need to be changed if you have more air going through it with the maxogen
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Offline Russ_leeds

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Re: Flat spot
« Reply #9 on: February 21, 2011, 04:08:34 pm »
possibly but mite aswell wait and get stage 2+ next time i go :signLOL: just have to save up for the rest of the mods :signLOL:.
i was thinking of changing the dv as i dont get a flutter sound more of a dump sound with the intake
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Offline martziniuk

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Re: Flat spot
« Reply #10 on: February 21, 2011, 05:44:22 pm »
I had a flat spot @ 5900rpm, I told my tuner and he made a new stronger map for me with zero problems :star:
The Trueseal makes no difference to the smoothness of the drive, it just gives a little more torque/power on mine.
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Offline vRS_Pagey

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Re: Flat spot
« Reply #11 on: February 21, 2011, 05:56:12 pm »
Quote from: Russ_leeds on February 21, 2011, 03:58:49 pm
the map is a stage 1 map from pdt. it ran 258bhp and 312ftlb on his dd rollers. ive only noticed the flat spot since fitting the maxogen

Holy s**t! Are them figures accurate? That's more torque than some stage 2+ cars are producing, and bhp is stage 2 territory............... :surprised:
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Offline Russ_leeds

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Re: Flat spot
« Reply #12 on: February 21, 2011, 06:43:46 pm »
yeah mate they're right i was well happy to say the least  :driver:
its on dd rollers too i have the graph here but its not on my pc. i wonder if PDT has it and could post it up if he reads this?
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Offline Janner_Sy

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Re: Flat spot
« Reply #13 on: February 21, 2011, 07:23:59 pm »
Had they been on independant rollers id believe them :P

Reference the maxogen intake. The ECU will adjust in about 50 miles or so Mine had horrific flat spots on it after fitting the intake.  Mainly as the car will now be getting a huge influx of air compared to before so the air fuel ratio will be out for a while until it adjusts.  After about 50 miles of mixed (normal/aggressive) driving the ECU adapted and it was fine. You shouldnt need any map tweaks

BTW with your 258Hp and the extra 10-15Hp from the maxogen (usual gains for an intake) it looks like you may have the most powerful stage 1 K03 TFSI ever, by about 30-40hp :wink:  :P
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Offline Russ_leeds

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Re: Flat spot
« Reply #14 on: February 21, 2011, 09:05:44 pm »
i know the figures are high i was doubtfull at first but my mate has a megane sport 225 stage 2 @ 274bhp and 335ftlb and theres absolutely nothing in them neck and neck. search for a topic by pdt calles 'how much power from stage 1 k03 more than you may think'. this thread has graphs of the first car which actually got a couple more bhp than me i think. my car was the second to be done with this map
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