need some help with performance

[ADaltima]

I've got a paid off 2011 Nissan altima 2.5s sedan and im looking into upgrades now.
My car is all stock besides LEDs looking to get some more horsepower/torque
im a great driver/racer i raced an identical one with intake and exhaust and almost pulled
him but mines pure stock
some upgrades i have in mind are
a bullydog tuner
intake exhaust
lightweight pulley
and headers
any idea where i would be with hp then?
and is there anymore i could do for fairly cheap
also any great brands for parts above thanks.

[RicerX]

Here are my suggestions, given that you have a 2.5s CVT:

Suspension mods:
Springs and sway bars would do wonders for your car. Couple this with a good set of wheels and tires, and your car will drive much differently than you'd even expect out of a commuter sedan. Of all the mods I did on my Altima Coupe when I had it, I had the most fun with a set of Tein springs and a short throw shifter. Power mods made a bit of a difference, but not as much as suspension upgrades.

From there, I wouldn't go too crazy with power adders - your CVT transmission will not like it. You can keep it simple with intake and exhaust, but I wouldn't bother much more than that. A couple bolt ons will do well, and even better with the suspension upgrades I mentioned above.

If you want to get all of those things, then I recommend the following:
Intakes: AEM or K&N (K&N will be cheaper, I believe)
Exhaust: Greddy (expensive, but hands down the best exhaust system you can get for the car with respect to sound, fit, and finish.)
Suspension: Tein makes great stuff for the Altima.

Mike at TunerzStore.com can help you out a lot too.

Have fun!