[s-cars] New 1.9 Bar Waste Gate Spring Bucking "Theory"

[Dave Forgie]

I have been running a 034 Motorsport 1.9 bar WG spring since March.  I 
did have bucking issues and had to turn the center cap adjustment out 
ALL the way.  Still had some annoying bucking some times.

Flash forward: coil pack dies and is replaced.  I drive the car.  Hard.

 Guess what? NO more bucking - ever.  Just smooth power like when I
first
 did the conversion. 

SO...for whatever the reason exactly, I now suspect that IF you have
 1.9 bar spring and you have it adjusted all the way out AND you are
still 
getting some bucking, you have a weak coil (either 1.8t coil pack or OE

style coil) and the rapid rise of initial boost that the spring
provides makes
 coil problem show up sooner instead of later.

Its just a theory.

Dave F.