got a questions for the knowledgeable folks..

I have a 7 psi 38mm w/g tial. it was high boost to 26.5 psi on a Precision sc 34 turbo. it boosted to 26.5 psi to 5.5k rpm and slow came back to 22 psi. it did not hold boost. Keep in mind it was a 7 psi sping. this drop in psi is a reflection in the dyno graph also. torque was lost after the boost went down and whp also took a hit. I think it's the weak spring that causing this fluctuation. If I install a 1 bar spring, will it alleviate the problem or so at least hold boost better. My low boost is perfectly fine. any info is appreciated. even speculation. of what it may be.

 

yeah, i would try and get another spring first, if the problem still persists, i would think theres a boost leak somewhere, however id also think you wouldnt be able to boost that high with a leak if its at all significant, try the larger spring first, my .02