2001 ss horsepower
 

I am looking for horsepower numbers for my ss. It has the SLP air intake and SLP center exhaust. I have seen 335 on some websites. On others I have seen higher numbers. What would be a accurate number?

go dyno it. thats the only way to see what ur car really has.

All HP ratings are estimates, the effect of upgrades are estimates so You are talking about a estimate on top of another estimate. Also you had two mods so you are trying to stack three estimates. The word accurate does not really apply anywhere.

Also not all engines are equal. Mass produced motors have variation in them so two car with all same mods are not always the same power.

Keep in mind that depending on the Air temp and Barometer pressure an engine can vary HP 5% from one day to the next. Now add in the fact even one dyno machine to another dyno machine can vary 10% or more. Just assume 325 and you will be as accurate as you are going to get.

Ipod with a dyno app is going to almost as accurate as anything else.