What gives 98GTs 10hp over 96&97?

[AirWolf87]

the 10hp gain came from "revised and cleaned up exhaust ports" I just read it out of a mustang book...I can scan and post it if anyone needs to see it..

revised??? wtf does that mean?? no need to post the whole artical...just a short summery would help clarify that.
Ok, so if its the tune, no big deal. I was planing on having my car tuned after the PI intake i just installed, so i guess i should make those 10 ponies up and more.

 

[007]

revised??? wtf does that mean?? no need to post the whole artical...just a short summery would help clarify that.
Ok, so if its the tune, no big deal. I was planing on having my car tuned after the PI intake i just installed, so i guess i should make those 10 ponies up and more.

revise means to go back and change it/do it again. They improved the tune. An aftermarket tune for 93 octane will be even better.

 

[98stangv8]

here is the page..not in the "tune"..it is in the "exhaust"