Please help again

[ledzz]

Finally sorted my overflow issue and now another one
Swapped my plugs today for some new oem ones and the vehicle stutters on full throttle above 2500rpm
Any ideas
Would be guessing maybe the ht pack as nothing else was touched
Plugs were torqued to 14ft lbs and everything re attached properly thankyoub

 

[foodtruck]

Hmm did you check the gaps before installing them?

 

[ledzz]

No was told the oem ones are gapped to the proper amount but great point
Would being gapped slightly out do this
Also so many threads with so many answers
Some people say 0.28 upto 0.32

Hmm did you check the gaps before installing them?

 

[foodtruck]

True, when I installed mine, they were all close to spec, around 0.31-32. I'm honestly not sure because I used a stack of measurement shims of different width rather than a single measuring disk, but I made sure gaps are the same across all 4.

AFAIK 0.28 is recommended for more aggressive tunes.

 

[ledzz]

Thankyou buddy appreciate that

 

[TyphoonFiST]

Did it set any codes? Did you Torque the spark* (F-ing spell check trash) plugs to proper spec.? Or just gutentitght? Are the coil packs properly seated slso?

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[ledzz]

Did it set any codes? Did you Torque the spam plugs to proper spec.? Or just gutentitght? Are the coil packs properly seated slso?

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What do you mean like engine management light. No no lights
Properly torqued and seated
Put my old spark plugs in and they worked before swapping plugs but when swapping back still had the same stutter

 

[ledzz]

Then again they were thrown in a bin so the gapping may be out

 

[ledzz]

On the old one

 

[TyphoonFiST]

On the old one

I do my Sparklers every 10k. I am BT with higher boost also.In fact just Did mine tonight. Fit Like a glove!

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[ledzz]

Thanks guys still having prob
Tried 2 sets of plugs and 4 new coil pack but still mid range mis free
Gapped to 0.7mm
Torqued properly

 

[foodtruck]

I would try to find an ODB diagnostic tool and see if there were any codes thrown.

 

[Sterilyze]

I'd go through a checklist to make sure it isn't any of the easy stuff:
-Clean/replace engine air filter
-Clean Mass Airflow Sensor
-Inspect spark plug well to make sure there isn't any debris (or OIL) in the threads
-Check to make sure its not your tune. Go back to your stock tune and see if that fixes it.

 

[M-Sport fan]

Especially since their tune/whole engine programming is based off of the MAF sensor over there in Jolly Ol' England (and the rest of Europe/most of the world).