timmbo

Not for me. Most times the cause is a dirty throttle body. Even very light carbon build up it can cause this issue. The only other culprit is in the tune where the idle air is not set correctly by the tuner. I run a tune from Blow By Racing and couldn't be happier. Chris Jones at BBR knows these cams and Roushcharger combos inside and out. Very happy.

JIM5.0

What you are saying is right. You can tune to compensate for a naturally aspirated cam profile to be used with forced induction. But there are drawbacks. You do waste fuel from overscavenging, well the boost pressure really pushing unburnt fuel out the exhaust. This is something to consider if your car is meant to alsobe driven on the street and you must pass emissions. But if you do not have emissions concern in your area or your car is strictly meant for the track and trailered there, this is all moot.

FI cam profiles are designed to mitigate waste of fuel and to also keep more boost in the cylinder instead of wasting it out the still open exhaust valves. Just like parchisi said, LSA is reduced. But also the opening and closing rates of our poppet valves are significantly faster. Sure a FI cam might have the same durations but the opening and closing rates are much faster due to the shape of the lobes. I remember in pushrod cars with FI cams almost always were roller everthing.

Blacksmoke

The hunting idle problem is a tune problem not a Hot Rod Cam problem.
I had the same problem with our 06GT. Tune fixed it.
I had a friend with the Detroit Rockers and a friend with some Comp Cams that had the same problem. Tune adjustment fixed it.

I just had to find a good tuner around here.

Knechtion

oh man i didnt know this would turn into a semi arguement, anyway im still deciding but i did look at the link you gave m,e and for only i believe 100$ more i think they would be worth it especially if they are designed for a SC car, although i would like the sound of the hot rod cams, so im not sure atm. But thanks guys for the info i learned something

JIM5.0

That definitely is a wise choice. Going with the supercharger grind will ensure you to get a cam profile that minimizes unburnt fuel, and more importantly, precious boost pressure out the still open exhaust valves. And thus you will not have to band-aid tune to try to correct this. Your tuner can thus focus writing the tune to use that captured and kept boost pressure.

I am not sure this has any bearing, but given the moving mass of air in relation to the boost pressure pushing it, it might be best to let the cam cutter know what supercharger you are using and also what boost pressures you will be operating at.