So i whent to the track again tonight to see if i could do better this time well first run at 15 psi 8.90 and 2.30 60 foot time on the 1/8 miles but after solving all the exhaust leaks still could not get more then 4 psi at the line brakes to the floor and throtle to the floor only 4 psi that it!
So i decided to bring the boost up at 18 psi now at the line i het 6 psi abd launches alot better but still dead for 100 feet but this time i puled a 1.95 60 foot time and a 8.35 on the 1/8 miles but this run as soon as boost hit 15 psi i would let go of the gas up to the end but this time by hitting 6 psi of the line boost whent up faster but i am still not satisfied i will change the o2 sensor see if it helps!
When building boost on the line do not floor it. Hold it about 1/4 to 1/2 throttle and let the boost build up and this may take some time but that's ok. How much throttle you need will be decided by practice.
Is it possible you're leaving in second gear? A misadjusted tv cable will do that. Check gnttype.org and follow the procedure for adjustment just to verify. Your rpms seem fine, that car should be punishing street tires out of the hole