[93HatchsBFF]

so i heard that our stock intake manifolds are good up to like 500Hp and still be Efficient would a after market intake make a difference?

[SWEET2KSTANG]

this has been talked about over and over. the downfall of all aftermarkets are the loss in low end torque. on n/a the stocker is plenty unless you are consistently winding the car past 6k rpm's, if not then an aftermarket intake is not something you need to plan. boosted cars can take advantage of shorter runners and more plentiful plenum area, but again the stocker is still sufficient enough for a street car.

[Drgnracin72]

your gonna gain a couple hp and lose some torque and its gonna cost you damn near 800-1000 bux to get it done. not worth it at all. the stocker is a great design

[KhaosGT]

and yet another good subject for the 99-04 help sticky

[93HatchsBFF]

sweet yeah i was just curiuos because i didn't know how well our mani's were on these cars?
what can we do for more airflow threw our intakes?
like what is a good gain for your buck with CAI?
and what is a good Throttle body for our cars?

[MATT02GT]

Originally Posted by KhaosGT and yet another good subject for the 99-04 help sticky

And shifters too!

[99mustanggtman]

The PI manifold is called "performance improved," its a great manifold up to 500rwhp range

[NavySeabee87]

Originally Posted by 93HatchsBFF sweet yeah i was just curiuos because i didn't know how well our mani's were on these cars? what can we do for more airflow threw our intakes? like what is a good gain for your buck with CAI? and what is a good Throttle body for our cars?

if you want a t-body, accufab i think is the way to go, ive heard nothing but good things from people who have it, 70 or 75mm, i went with 75 because i wasnt sure what i was going to do with my car, might put a s/c on it, i dunno. and for CAI, depends what one you get, i got a steeda, alot of ppl mention JLT, a couple hp up to like 10, maybe more with a tune, it depends

[93HatchsBFF]

cool yeah i was thinking anout doing a 75mm
what up with that duak throttle plates in the throttle bodies i was reading in a magazine this guy had one i was like WTF?
but i got another question. is it true that patriot Heads are just stock heads that have been ported and polished? is thre better heads out there for our cars?

[NavySeabee87]

what do u mean throttle plates? in the t-body?

[acmillr]

The PI can go to 7000RPM's and 550RWHP for sure...........

[HBK_2007]

Originally Posted by 93HatchsBFF is it true that patriot Heads are just stock heads that have been ported and polished? is thre better heads out there for our cars?

yes its true. as for better? that depends on who u ask. personally id just get some used PI heads and have them ported

[93HatchsBFF]

sweet!!! thats what i heard i could just buy some off of craigslist or pick some out from the junk yard off of a wrecked one lol
but where is a good place to ship them to that does good porting jobs for these heads?

[sxynerd]

Originally Posted by HBK_2007 yes its true. as for better? that depends on who u ask. personally id just get some used PI heads and have them ported

Currently there are NO aftermarket heads for the 4.6. EVERY head from every company will be ported ford PI heads 152cfm @ .500 lift. A well ported head can flow as good as 173cc intake, and 206cfm at .500 lift depending on the speed shop. The only head I've seen flow better is Fox lake at something like 223.


These are off the top of my head numbers and should be verified before thinking it's gospel.