I had a chance to peak at John’s logs at BIR and noticed that his 2.0 spooled a non BB 4202R faster than my 2.3 powered PTE BB 4276R, it also had better boost recovery between gears. Now thinking something was incorrect with my setup I built a boost leak checker, fixed the IC pipe and tested the system. The throttle body leaked so bad I could not even build positive pressure in the system!
So now for my update, I ordered a Magnus manifold months ago, it arrived about 2 weeks ago and I immediately started fabricating new piping and others. I could not fix the boost leak in the TB so I purchased a Wilson TB and welded my v-band to it. The car now spools the turbo over 500 rpm quicker. The power comes on very hard and the recovery is better between gears, still not as good as John’s, as I have lots of IC piping and a 6” thick IC to fill up on every shift.