I have a few questions about twin turbos
1)Do I need to switch to lower compresion pistons
2)How much horsepower is to much horsepower
3)Do they have negative effects on my engine

 

1.) No, unless you get extreme with your boost levels.

2.) Depends on a billion factors, including luck. I know a guy locally running a turbo putting down 500+ rwhp, I've heard of motors letting go close to 400rwhp. The trans is another factor.

3.) Any FI mod will put excess stress on the engine that it wasn't "designed" for. Engineers build in tolerances, but they aren't promised capabilities. With a good setup and "safe" tune, you can expect near stock-level stress at normal driving, but anytime you push the capabilities of the motor you could create "negative effects"

 

Thanks for the help bro

 

Sizing a turbo for its application (unknown in your case) is very important. Larger is not always better and two turbos are not automatically better than a single.

 

The man knows what he speaks!