missfire at 5k

[Guv]

Right,

since ive had my bluefin on when i get to 5k in first gear the car gos nuts making a buuuurrrrrbbbppp noise lol if you get what i mean lol and its misfiring i had this problem on an old supercharged bmw i had . the problem was due to the sparkplug gap ive changed all the plugs today and its still doing it . has any one got any ideas ? its driving me nuts

[john_o]

bluefin guys will be along soon, but I seem to remember that an incorrect map (manual vs dsg) may cause this.
First thing Id check is you have the right map for your gearbox type 

[Poverty]

is this with esp on by chance?

[Tfsi_Mike]

is this with esp on by chance?

How come? Got a miss fire at the min doing coilpacks at the weekend.  Started when i put ngk irridiums in.  put srd bosch plugs in and its not as bad but missfires when driving hard...

[Guv]

is this with esp on by chance?

yes it is havent tryed it with it off but esp wont cause a missfire tho surely

[PDT]

Is it at 5k under high load? or at any throttle position?

[Guv]

Is it at 5k under high load? or at any throttle position?

under highload

[PDT]

I have seen this a lot laterly on the TFSi engines. I usually try and replicate the fault on the dyno, often its a missfire on coilpack number 4. Only ever see it on mapped cars as well.

I usually replace all 4 plugs, if that doesnt solve it I will change coilpack 2 for number 4 and retest, if the missfire moves to cyl2 then I know its the coil.

If you need a set of coils I have 12 brand new in boxes, original VW items as well. will sell at -20% off retail.

[Hedge]

Are you manual or DSG? Ed30 or GTI?
Have you tried it with the map removed?

Superchips have a bit of history with sending manual maps to DSG cars. Nothing fatal but quite annoying. The symptoms are similar to what you describe however on my Ed30 with stage 2 it went from about 3k until 5k at which point it pulled cleanly.
On stage 1 with the wrong map it went from 3-4.5k but was much less pronounced as the stage 2 map.

Or it might be a plug/coilpack problem but try the cheap options first 

[Guv]

Just took her for a lil drive and its really bad with esp on with esp off you can hardly notice it

my gti is a manual with bluefin stage 2 it didnt do it with stage 1

have also changed the coils with a spare set i have and its still the same

wondering if thes plug i got today are dodgy .

[Hedge]

wondering if thes plug i got today are dodgy .

Hmmm. Sounds promising. Try it with the original plugs and see.

[Saint Steve]

Are you manual or DSG? Ed30 or GTI?
Have you tried it with the map removed?

Superchips have a bit of history with sending manual maps to DSG cars. Nothing fatal but quite annoying. The symptoms are similar to what you describe however on my Ed30 with stage 2 it went from about 3k until 5k at which point it pulled cleanly.
On stage 1 with the wrong map it went from 3-4.5k but was much less pronounced as the stage 2 map.

Or it might be a plug/coilpack problem but try the cheap options first  

2nd that advice.

My missfire was at around 3000rpm in 6th gear travelling at a constant speed of around 70mph.

[Guv]

it done it with the original plugs thats why i got new ones today lol

think ill buy some platinum or iridium ones i think what are the best plugs to buy ?

[PDT]

I wouldnt try more plugs, if it was doing it with the originals, and with new ones then its likley to be a coilpack. Maybe take others advice on getting the map checked as well.

What other mods are on the car? did it do this with just stage 2 or on stage 1 as well? what have you changed to go to stage 2 other than the map?

[Guv]

cold air intake system and turbo back miltek exhaust also a forge bov adaptor. i only used stage 1 for 2 days as i wanted stage 2 in the first place and it didnt do it with stage 1