Increasing hp for towing
 

Can I really increase horsepower that much by using one of these performance chips ? Also will changing to a cold air intake K&N help ?
Also changing to larger diameter dual exhaust help too ? I would like to be able to increase the hp and torgue on my 95 F250 351 eng . if i could
improve performance maybe it will tow my trailer better and I won't need
to resort to buying a new truck . Thanks in advance .

the k&N will help so will the exhaust as for horse power, putting headers on will too, the chips are all new school for me so i dont know.