Why does the Bullitt need premium gas?
1st Gear Member
Joined: Mar 2006
Posts: 115
From: B.C
if i remember, you can use both regular and premium in the bullitt; the computer will sense the change in octane and adjust the tune accordingly. running regular is supposed to yield 315 bhp and premium yields around 325 bhp (last i read anyway). i think the 08 or 09's have this 'auto tune' too, but is not as efficient as the bullitts. 05's are regular only, unless you get an aftermarket tune 
Almost right on, but on regular gas the Bullitt gets 315 pound-feet of torque. On premium it gets 325. It keeps its HP rating of 315 on both regular or premium.
'Dr. X'
Joined: Apr 2008
Posts: 4,388
From: Toto's Kansas
if you want a cool mod for your bullitt, you could add MRT's 1968 style hood (wow, i don't have any affiliation with MRT, but it seems like i've been pushing that hood lately...) it is pretty cool looking and it makes an s197 look more like the old 68 mustangs...
here's the thread i started if you're interested wolfie (or for anyone else who is interested) https://mustangforums.com/forum/2005-2014-mustangs/482720-mrt-1968-style-hood.html
Last edited by Xeno; Sep 19, 2008 at 10:22 PM.
1st Gear Member
Joined: Mar 2006
Posts: 115
From: B.C
ok. i think the last time i read about the numbers was when the bullitt first came out, so its been a while :P thanks for the info.
if you want a cool mod for your bullitt, you could add MRT's 1968 style hood (wow, i don't have any affiliation with MRT, but it seems like i've been pushing that hood lately...) it is pretty cool looking and it makes an s197 look more like the old 68 mustangs...
here's the thread i started if you're interested wolfie (or for anyone else who is interested) https://mustangforums.com/forum/showthread.php?t=482720
if you want a cool mod for your bullitt, you could add MRT's 1968 style hood (wow, i don't have any affiliation with MRT, but it seems like i've been pushing that hood lately...) it is pretty cool looking and it makes an s197 look more like the old 68 mustangs...
here's the thread i started if you're interested wolfie (or for anyone else who is interested) https://mustangforums.com/forum/showthread.php?t=482720
Cut & Paste Expert
Joined: May 2007
Posts: 13,322
From: NW Arkansas
More exactly it changes the timing to avoid knocking.
Lower octane fuel wont handle high octane fuel timing
curves without knocking. It just adjusts the timing to
avoid knocking with the different grades of fuel used
but get the most RWH from them without knocking.
Thread Starter
3rd Gear Member
Joined: Sep 2006
Posts: 788
From: Lewisetta, Virginia
I'm pretty sure the Bullitt has the same 4.6L V8 engine regular GTs have except it has the power package upgrade. I guess that upgrade is the Ford Racing cold air intake and Ford Racing exhaust. Plus from what others say here about the higher octane fuel, the Bullitt has a different tune geared more toward the 93 octane fuel.