If you used the stock turbo that comes with that kit it also doesnt gain ALOT of power either. The stock kit will get you to 160-180. And maxxes out with tuning at around 240. The more power you make, the less reliable the car becomes on the stock bottom end. Then again, there is a d16z6 making 400 whp on the stock bottom end. Its the only one ive ever seen, but it is ALL in the tune.