It will add horsepower for sure , and you will feel the difference if your a good driver and know your car well . The increase depends on the engine situation and the car model too, on v8's it will usually increase from 5 to 20 hp and you can hit the 20 easily if you reprogrammed your computer , without reprogramming the gains will be from 5-15.
like 5 or 6 horse i belive
To be sure you need to tested on a DYNO.
ok more air flow....did you change to a larger throttle body?
Anywhere from 160 to 205 HP.
190 Horsepower which is stock for this engine. The K&N filter will add almost no horsepower at normal driving rpms. It will help some but only at higher rpms, which is a range that you will not be driving in. These type free flow filters only help in a racing environment, and do almost nothing for day to day normal driving. As to the TB Spacer, it does nothing to increase horsepower. I know you have more than likely been told that they add horsepower, but the dynos do not lie, and they simply do almost nothing for a no-race vehicle.
it has 3.5
by it self about 4 0r 5 but with the upper plenum combo about 14
About 6 to 12 hp. But that is still dependent to the type of the throttle body that you will use and with the response of the air flow to the engine. Note that oftentimes, throttle body somehow acts like a carburetor in a non-injected engine.
Maybe 10 on its own. With other mods like a bigger throttle body and exhaust it will help out more.
Assuming both are working as intended, probably none.
how much for a Chevy caprice throttle body cost? 5.7
About 10-15 horsepower is a noticeable change. Kind of like turning the AC off and on. You can feel the change in power. A spacer on this engine will net you a small percentage of maybe 1hp. We are talking fractional You will not ever feel, notice or have a use for the difference it will make. Complete waste of money.