ok i installed my ho manifold i have checked all vac lines every thing and now when i come to stop it dies and somthings it saves it self and doesnt die and when i iam driving it will stall or sputter more of a sputter but if iam to the floor raming on it it doesnt sputter my egr is blocked still have the sensor pluged in tonight i cheacked all vac line agane every thing was good but havent cheacked my t/b gasket could that be it but the hole on the head under the middle hole on the intake flange the pcv i blocked that could that be cosing the problem i mean i still have the other pcv hose unblocked idk please help and thank you

Could the intake manifold be leaking. Spray something mildly combustible (not gasoline, acetone, etc) around the intake manifold and see if the rpm's increase. Good luck