how much power can i expect to pick up with an intake, exhaust, and a dyno tune on an 08 hemi? coming from the mustang world, unless you own an 03/04 cobra, you arent picking up very much from the intake/exhaust (anywhere from 5-15rwhp depending on model and exhaust) but can pick up pretty decent power on a decent tune, anywhere from 15rwhp+ depending on the tune.....i picked up almost 20rwhp on a modified can tune. those mods are about all i plan on doing to the truck

 

CAI and exhaust prolly net you about 10 HP at the rear wheels. As far as a dyno tune goes, I'd think you'd want a lot more mods to take advantage of a custom tune on a dyno for that kinda money.
A good canned tuner like the Superchips or Diablo will give really solid results with a mildly modded truck for just a couple hundred bucks...

 

so there is probably going to be as much difference with these mods on this truck as there were on my mustang.....

 

Yep. The Diablosport gives 20rwhp in 93 octane tune.
K&N boast a whopping 8hp from their CAI.
Not sure what my Magnaflow cat-back was worth, but I noticed a little more HP in the butt dyno
I have a K&N drop-in filter with a Airaid MIT tube. Never need to buy a filter again, not sure about power gains.

 

When I bought my truck it already had the Airaid CAI with MIT tube installed so I never noticed any power differances. I got my magnaflow 14" muffler installed shortly afterwards and I noticed a little difference (might just be in my head). Airaid claims 20 HP gains with their CAIs. When I get back from Afghanistan I'm going to get a Superchips Flashpaq or DS Predator and then get it dynoed so I can get crank and RWHP numbers and see how different they are.

 

When I bought my truck it already had the Airaid CAI with MIT tube installed so I never noticed any power differances. I got my magnaflow 14" muffler installed shortly afterwards and I noticed a little difference (might just be in my head). Airaid claims 20 HP gains with their CAIs. When I get back from Afghanistan I'm going to get a Superchips Flashpaq or DS Predator and then get it dynoed so I can get crank and RWHP numbers and see how different they are.

 

I am running an Airraid intake and it doesn't give 20hp.

 

I think K&N gives more realistic numbers which are 10.49 HP on a Hemi, Now that I can buy...

 

i would buy it more if they made a statement like "10hp gain when used in conjunction with other supporting modifications"

 

The last ad that I saw for the Hemi Ram K&N system was 8hp. This was in the ad for many K&N systems. Most trucks were from 8 to 12hp. The OEM intake must not be too bad. That is probably 8 crank hp too. Nothing you will feel either way.
I have a Airaid MIT and noticed no gain over the Hemi Hat. Perhaps with ported heads and a larger cam the added airflow may be needed.