MERRY CHRISTMAS guys! just ordered a afe intake manif. and was wondering if ther is any REAL WORLD gains from this mod other than underhood bling. the adds say 15 hp, 35 lb ft but is that on unmodified 5. 9's or advertising smoke and mirror stuff? the 5. 9 is a low rpm torque monster that does not rely on high airspeed, but on volume created by turbo pressure, and restrictions created by changes in air column direction are overcome by boost pressure, (thats why the CUMMINS gus didnt cast a big baloon shaped manifold and hang tuned headers on the thing in the first place. All the mods I have made on the last 5 td's have responded WELL, (thats why I keep buying them) just wanted to see if anyone has installed one of these and noticed any gains. thanks,TDR members,you are a wealth of info.