I just installed a Set of Nismo R-tune cams along w/ my vortech setup and now my car is running like dogsh!t. Now i know i have to have the idle raised to around 1000 rpm, but that isn't where the problems come in. When i crank the car i have to give it gas to get it to start and when it does start it will idle very harshly at 700rpm for a few seconds before it dies. Doing this the boost guage only shows 3hg of vaccum. Now if i crank it and hold the throttle at 1000rpm it runs smoothly and the vaccum increases(WTF) to around 10-15 hg and the AFR is at 14.7. Also when reving the car to around 4-5k rpm in park it doesnt rev as freely as it should. It feels like it is lacking power. We used a smoke machine to detect and fix all vacc leaks and i am getting 0 codes

What could possibly cause these symptoms. I am guessing that the cam timming is off. Any suggestions?

 

Did you align the crank and cams correctly? My guess would be either cam timing, or big vacuum leak. Check all the hoses, intake manifold, maf.

 

Yes i had a shop do the cam install and they followed the guidlines in the FSM. I don't think i have a vacc leak since the we used a smoke machine and none were evident.

 

Did you install bigger injectors?

 

yes i am running Power Enterprise 510cc injectors, but i have been running those for a year now along w/ emanage blue.

 

Its really hard to tell. I mean if it doesnt throw codes, then you have to check the basics. The timing, fuel, spark plugs, vacuum leaks, maf. If everything checks out okay mechanically, then it has to be electronic.

Good luck