WTF is going on???

[p.tony]

Car was running fine until i sprung a boost leak. TBB was torn and i replaced with a samco. Tightened and checked all of the clamps. Now all of a sudden the car is shuddering under a load/wot at peak boost and i got a flashing then solid check engine light. Hooked it up to vag and read multiple misfires 1 or 2 here and there and misfires cylinder 3, 25-30. Change the coilpack. Same shit. Check the forum, search, read, change the plugs. Same shit. Next suggestion??? Cylinder 3 location driver side closest to radiator correct?

[s4Xcelence13]

Have you tried spark plugs? and also check to see if all your injectors are in properly

[changs4]

welcome to the notorious part of S4....$$$

[tike0rz]

Swap the ICMs on top of the airbox, log and see if the misfires change cylinders. Theres your answer.

[JDM EJ1 95]

Swap the ICMs on top of the airbox, log and see if the misfires change cylinders. Theres your answer.

x2

[awd2ks4]

probably another boost leak

[haus4]

ICM or coil packs if you changed the plus already. I dont know if a boost leak would cause multiple misfires like that. You would see the boost be less if you had a leak.

[RolledMySTi]

probably another boost leak

+1

[RitchS4 914]

im having a very similar problem right now. i just got a giac chip and went to drive it and test it out and the car started to studder hard under WOT so we put it back to stock and tryed it again and still had the problem. we checked for codes and logged it and no codes and no codes or anything. i will be preasure testing this weekend and checking a injectors and spark plugs but does anyone know if it could be anything else ?

[mholme]

Car was running fine until i sprung a boost leak. TBB was torn and i replaced with a samco. Tightened and checked all of the clamps. Now all of a sudden the car is shuddering under a load/wot at peak boost and i got a flashing then solid check engine light. Hooked it up to vag and read multiple misfires 1 or 2 here and there and misfires cylinder 3, 25-30. Change the coilpack. Same shit. Check the forum, search, read, change the plugs. Same shit. Next suggestion??? Cylinder 3 location driver side closest to radiator correct?

Cylinder 3 is going to be passenger side, up by the firewall side. See if the mis follows the coil pack.

[OldYella]

Ill bet your samco slipped off or the sensor on top of it came out.

[Ber\/ani]

Ill bet your samco slipped off or the sensor on top of it came out.

just happened to me. put the clamps back on tight and it was as good as new. i would double check your tbb if you just put a samco on

[RolledMySTi]

I would check your F hose

[CONTROL ONE]

Try putting the stock airbox back on to test it.