I removed both of the side walls in the stock air box and the screens should i take out the horn also....thanks,,,

 

i say leave the horn. i think renesis said that it straightens air flow. so smoother idle.

 

Horn? Not sure what you are referring to.

I'd recommend putting the screens back in though. They smooth out the airflow quite a bit, and can cause MAF reading problems, and you could easily lose more than you are hoping to gain.

 

My airbox never had a horn...could explain my rough idle...shucks...

 

I put one of the screens back in..but when i had both of them out the car seemed to accelerate alot better and i think it was smoother.

 

I think I have one if you need it.