When i changed my ct9 cause the seals were shot i swapped my actuator on to the new ct9, went and ran it and it boosted too over 20psi but i let off when i noticed it ! it pulled like a bloody train haha, But as already said 1 bar but sometimes they they can take more ! Personaly id get shot of the plug and play and get emb so its mapped properly as plug and plays can.be a bit unpredictable, but of your stayin plug and play make sure you get your AFR checjed out