hey guys so I have a 99 civic with a ls vtec, last year it was a bone stock motor with ebay header and yonaka 2.5 exhaust, it made 159hp. I wanted a bit more power so this spring I installed CTR cams , supertech dual valve springs, AEM cam gears and plm v2 header got a other tune this weekend and the most It made was 164hp? just wondering what went wrong because I thought it would of made at least 170hp

 

Could be a shitty tune. Could be a shitty motor. Could be shitty parts. Could be a lot of things. Without more information, we can't tell you. Post dyno sheets. Post maps. Post compression test numbers. Give us data.