DriftingCrab wrote:I was thinking of going with IAP stage 1+ kit what additional mods would i need for it to perform in between 250-300hp safely as a daily driver and how many hp can the stock internals actually take withstand
FOR THE LOVE OF GOD, SEARCH! It's the blinking red button at the top. Seriously, this topic has been absolutely beaten to death.
It all depends on the condition of the engine, the nature/safeness of the tune, the type of gas used, how it's drived, etc. Some people (me personally) start blowing ring-lands around the 250-275 whp; I know I did on my original engine, and some people run 350 whp on stock internals. It's never a completely cut-and-dry answer. I personally don't think the stock engines are good for any more than 300 whp max, and that's with a GOOD tune. And I was using alcohol injection, along with 93 octane fuel,and a huge intercooler when my ringlands were destroyed...