70mm or 75..

[kevins98mustang]

Want to know what to go with on my 98 GT.. want to know if i do change my intake to 70mm or 75mm... do i need to do something.. to the computer or anything or adjust anything.. or can i just bolt on and go.. ???????

 

[19mustang95]

bolt on and go, but you need to get a plenum too...and if you plan on going boosted, get a 75. otherwise you can just get a 70.

 

[kevins98mustang]

OK . SO i can just bolt the 70mm and go.. right on. .if i do go with the 75 do i really have to get the Plenum

 

[19mustang95]

OK . SO i can just bolt the 70mm and go.. right on. .if i do go with the 75 do i really have to get the Plenum

im pretty suure you need a plenum for both

 

[97vertstang]

get a trick flow plenum , its $99 bucks on summit racing, and it will only be 1-2 rwhp away from the other expensive plenums.