Can handle?!? umm no it cant not daily it cant. 15PSI is asking to blow it up. I have seen 12 Run on a daily basis and I know a few hwho ran 15 for a couple of days and blew the motor. The pistons are not to strong in these cars really I wouldnt run more than 10 just to be safe. unless you get a beffed up bottom end and top end for that matter. you will only be able to run 15 on a daily basis if you have a superman tuner to tune the car and even then it may not last. The most I have seen on the stock bottom end was rund by EclipsePenguines at club 3G he ran 16PSI gotr a couple of pulls out of itand as soon as he hit a pot hole and the boostspiked to 17 he blew it up.