p.i intake

[cobra clone 98]

well i got my p.i intake. its off a 04 4.6 crown vic. goin to bolt it on my mustang here sometime. am goin to use the non p.i intake gaskets by what i have been told to use. how much increase hp can u gain by using one of these intakes.

 

[joekd]

SOTP dyno says very very little actual HP gain, less of a power drop in the higher RPMs though

 

[FrankenStang]

DONOT USE NPI GASKETS....ive done the swap atleast 10x with both sets and lemme tell you, ud rather have the chance of coolant leak with Pi gaksets instead of one of 8 cyls leaking on the manifold with npi gaskets...I dont care what you herd or read..if you wanna do it once then do it rite..PI gaskets ,break off the little plastic nubs on them and RTV the corners of the 2 coolant ports...

atleast then you do it worng you know its wrong rite away as ulle see it leak...OOORRRRR use npi gaskets and try finding where your vacuum leak is which could be on any spot from the gasket...
PI gasket is wayyy better intake port matched...keep that in mind...
now go do it correct...or post pics using the npi gasket and i wanna see all the extra time you take...

 

[FrankenStang]

and ya, just api intake will do you no good unless you have the Pi cam to allow the more airflow....i act gained nothing from a pi intake swap alone, but when i added the pi cams it knocked like .2 or something...

 

[97FloridaGT]

Did you do the head swap too or just the intake and cams?

 

[joekd]

DONOT USE NPI GASKETS.

I disagree strongly with this, I have done it with both gaskets and the PI leaked almost immediately, the non-pi gaskets are still sealed fine years later

 

[LI98GT]

I disagree strongly with this, I have done it with both gaskets and the PI leaked almost immediately, the non-pi gaskets are still sealed fine years later

Same here no problems after a number of years. NPI gaskets with no leaks. I got 7rwhp, according to the dyno, but lost a few ftlbs torque and at the time had I had PI cams installed already. For me it allowed the engine to pull 500rpm up top.

 

[cobra clone 98]

as of right now i just have the intake. i want to run the comp cams stage 2 cams. am not goin to change the heads.

 

[97FloridaGT]

You plan on a dyno run after the mods? You're doing what I want to do.

 

[clark98gt]

I used the pi intake gaskets with a little rtv around the coolant ports and I have no issues. Just my .02

 

[cobra clone 98]

as soon its done i will get some dyno runs. just buying the stuff one at a time. i will let u know when i get it done. am goin change the exhaust also. it has the h-pipe on it now with flowmasters and with no cats. goin to change to the x-pipe and run different mufflers.

 

[MaxxRPM]

Is your stock intake leaking? If not, I wouldn't bother with installing a PI intake on a NPI motor. If it is leaking, go to the junkyard and get an updated aluminum crossover intake off an NPI motor. I've seen alot of Crown Vics with these. I wish I would have done this instead of the PI intake swap. I've tried twice to install the PI intake (with PI gaskets), and it STILL leaks..........My next move is to do the full PI swap. Mainly, so I can have a dependable DD that doesn't leak coolant.

 

[cobra clone 98]

the one on my car now has the aluminum cross over. i was just doin the p.i intake swap to increase the airflow alittle. the p.i intake i have also has the aluminum cross over.