So I drove my buddy truck that has the 3.4 in it and it deffinitly help with horsepower I drove it then he turned it off and you could deffinitly tell the difference in power... it wasnt the 25% that it says it is but it deffinitly was between 15% and 20%. I was wondering if anyone has put one of these in a 22re and how the power gain was in it. any info would be great.
Thanks guys

 

I doubt it making anywhere near the 15% of stock HP since you can't make HP without adding either more fuel and air. It might make the throttle more responsive but it's not making more power.