Where did the 10 extra hp come from in 98?

[search4aztlan]

In 98 there was a 10hp jump from the previous 2 years of the 4.6L. Was it attributed to changes in measuring horse power by the auto industry or was there an actual engine modification.

 

[70stangcoupe]

To my understanding, the motor in 98 really didn't get a 10hp increase.

 

[search4aztlan]

...

specs show it at 225 hp while previous show 215hp.

 

[xAchillesx]

someone ocorrect me as i may be wrong, but I believe the 10 hp came from ford tweeking the computer some in 98, nothing to do with the engine , mainly the computer

 

[98SteedaStang]

Thats a good question, I always wondered why that was.

 

[Mo-Tang]

Thats what I heard, "98's received a more aggressive computer tune freeing up an additional 10 horsepower."

 

[FallenPhoenix]

could've just been a paper thing, like the last 5.0 in the mustang?

 

[Ryan02Stang]

I've heard it was a "computer thing" But I'm sure it was nothing...just better numbers to put down.

 

[d98gt]

I've yet to see a 98 GT dyno higher than a 96-97 stock.

They are basically the same

 

[scion4LIFE]

DIDN't 98's also switch to COP??

 

[Ryan02Stang]

DIDN't 98's also switch to COP??

NO!

 

[scion4LIFE]

NO!

SOMETHING inside the engine bay also was changed. A POst I read ages ago said something like "Half 1997 technology half 1999 technology" BECAUse FOrd was switching over to newer technology.

edit-o-rama
http://forums.stangnet.com/showthread.php?t=403393&highlight=1998
IT was the fuel system, HAlf way to returnless.

 

[search4aztlan]

There's still no verdict??

Mystery horsepower? Possibly a typo?

 

[scion4LIFE]

Mystery horsepower? Possibly a typo?

someone ocorrect me as i may be wrong, but I believe the 10 hp came from ford tweeking the computer some in 98, nothing to do with the engine , mainly the computer

SEEMS to be the consensus. CLIck on this thread too, they also say that!!
http://forums.stangnet.com/showthread.php?t=403393&page=1&pp=40&highlight=1998

 

[stallion98gt]

ur right..96-97 are 215HP and 98 are 225HP...I think different tune for the computer mainly.

 

[Modular2v]

the 98 had a more aggresive tune and better flowing exahaust....if you listened to a stock 98 gt and a stock 96/97gt the 98 rumbles a bit louder...it actually sounds pretty good!

 

[stimmler]

Computer is different than any other year and the exhaust manifolds are supposed to different as well.

 

[GDawg]

the 98 had a more aggresive tune and better flowing exahaust....if you listened to a stock 98 gt and a stock 96/97gt the 98 rumbles a bit louder...it actually sounds pretty good!

 

[flygti]

The exhaust manifolds are the same 96-98. The 98 GT has a different computer, fuel pump, and throttle body.

 

[5spd GT]

"The higher output was derived by revisions to the exhaust side of the 4.6-liter's single-overhead-cam head."

Direct quote from "Mustang 5.0 & 4.6 - 1979-1998"...