adamrs80

iTrader: (7)

I've been thinking of drilling my pre-control pill with a .0595 (#53) drill. I'd be enlarging the hole .0015'' up from .058. I'm boosting to 12 or very slightly under 12 on the primary turbo. This is under hard acceleration. I also see 12 on primary if I accelerate in 4th at lower rpms on the highway but I started a thread about it a while back and the general consensus was not to worry about it. https://www.rx7club.com/showthread.p...hlight=psi+4th

I know the pre-control pill controls the boost of the primary and also the transition so I don't want to screw it up. Has anybody tried drilling the pre-control pill with success? I did some searching and found people struggling with valves. I am only trying to get closer to 10psi on the pirmary, I don't want to fiddle with an EBC or MBC dual valves.

MR_Rick

iTrader: (7)

try and see where your boost is at with no pills. I was boosting 12-14 psi and I couldn't get it down, so I took it out and now I am running 9-10 psi without the pills.

adam c

iTrader: (2)

I moved my wastegate pill (slightly larger opening) to the precontrol line a few years ago. I did this in an attempt to increase my boost at transition. Boost at transition went up very slightly with no change in boost before or after transition.

I dont think drilling the prespool pill will lower your 12 psi boost. The pre spool mostly controls transition. As stated before, there isn't anything that needs fixing with your car

Turbo8

iTrader: (17)

I had the opposite issue of you where I was boosting 10-10-15 as my secondary was running out of control. So I removed the the pill for the wastegate altogether and saw 7-9-10. I then drilled the pill and saw 9-10-11 or so with a very smooth, gradual transition.

By drilling the pill for the secondary I was able to also lower primary boost. What PSI are you seeing near redline?