We just installed them on our 99 Si and do not really see that much difference in power. Please help.

 

This may sound stupid but are you sure you installed them correctly? You didn't put the timing belt on off a tooth, did you?

 

ther is a big difference in power, are you sure you got CTR cams?

 

Did you happen to get cam gears also, and do you have the nessecary fuel components? I'm also guessing you haven't tuned yet?

 

Yes, we hope that they are CTR. We were told that they were. We got AEM cam gears installed. We had it dynoed today, and the horsepower gain was 12 hp. He ran AEM CAI and DC Sports 4-2-1 and dynoed 142. Today he hit 153.

 

Well.......that's about right, considering your mods. Now get a Fuel pressure regulator, fuel pump, and intake manifold(a V-AFC would help alot too) and you'll really feel a difference.