i was wanting to get the typhoon intake for my 96 gt and was wondering if i had to have the PI heads some places say you do i have heard you dont so any insite would be great thanks :wallbash:

 

The typhoon intake is a joke..spend your money elsewhere..do some searches and you will see for yourself. I'd do a pi h/c/i swap before doing anything to your car..

 

you have a 96 gt...........
damn well do intake and head swap + gears

 

https://mustangboards.com/modular-4-...about-new.html

Im about to have my PI intake manifold off of my '02 for sale in about a week or 2. It has 9,*** miles on it if interested.

 

Id get some new ported PI heads, VT cams, and a PI intake or Bullitt intake. That is if you have the money.

 

Funny how one or two intakes out of a crap load have a problem with it,and it's a piece of crap. well my accufab plenum had some crap i had to grind down, and someone else told me the same, so accufab plenums are a piece of sh*t pass it on. sorry but true.

The PI swap will bump alot of power to your 96 GT, 260hp or more due to compression increased.

 

Mine didnt have anything in it, I checked before I installed it. I picked up 8hp and around 10lbs of torque too.

 

Atleast yours didn't. after working out the imperfections i'd say i picked up a few ponies too.

 

the typhoon is designed for PI heads. You will have a gross misalignment of gaskets with NPI heads. There are ways around it but I call that dutch engineering.

Do a head swap to PI heads or call up hiperformancesolutions.com and ask about their adapters.

Seems like Saleen was being sarcastic about the Accufab stuff... can't tell. I've always found their stuff to be top quality though. Like the man said, a couple glitches isn't representative of the whole lot... sometimes with mass produced toys a few bad ones will clear QA... such is life. Not that big a deal if you just call up and ask to have it rectified.

The Typhoon is pretty young yet.. not even in full production, so there's likely to be a few teething issues with early units. Give them time. Apart from that... it's a basically stock intake and the intake is NOT a point of restriction on the 4.6L 2V with the stock cams in place.

 

On a NPI motor it is.

 

if that were the case, then swapping to hotter cams would get you nothing on NPI motors unless you went to a PI or aftermarket intake. We see NPI motors like MMFF's RHSC gain solid power with a proper cam upgrade and a stock NPI intake so your assertion wouldn't seem to hold water.

Got any info that could clear up that disparity? I'm open...

 

Does the fact that many people who have swapped JUST the intake have gained 10-15hp not prove that the intake is a bottleneck. More aggressive cams just leave a longer duration of the intake valve being open thus allowing slightly more air into the cylinder. Add a better manifold and even MORE air can enter.

If your theory was rock solid then JUST headers or JUST catback or JUST a midpipe wouldn't see gains, only full exhaust would...which we all know isn't true. I've heard of plenty of stories telling how just swapping to PI cams/manifold will give you 10 maybe 15 less HP than a full headswap, which also raises your compression ratio and limits the full potential of possible power adders without major internal work.

EDIT: btw i'm not trying to start an argument or anything with you, just sharing the info i've heard and "from my knowledge" info.

 

how does just swapping intakes and adding PI cams change compression? I think on the NPI motors the intake holds ti back as well, just like you said they gain good power with just a PI intake swap.

 

I don't have any first hand data on intake only swaps so I can't speak to that with any degree of honesty. What I can say is 10hp does not a restriction make. Hell 10hp you can't even really feel much (not to say not at all but damn near).

A PI head and cam swap might get you 25-30hp but it ain't gunna hand you the 60-80 that a full PI swap is worth so your math is a lot off. Not only that but intakes and cams are usually tuned to work together so swapping one without the other normally makes little sense.

Exhaust: This is simple restriction on the back end and has nothing to do with the intake side of things... you've already made the HP (aka burned the gas) by the time it's in the exhaust... opening up the poop shoot only allows the gasses to resist less the engine's efforts to evacuate them which frees up HP normally lost to what is commonly and somwhat nebulously called "drivetrain losses". I can't agreet that that's even a valid basis for comparison.

spike.. I think he was saying that the full PI swap bumps compression not the intake and cams, which is correct. I don't subscribe to the old school of thinking that high compression is a defacto eliminator for blowers... I know of several 10:1 blower cars that are reliable and streetable and live on crappy california 91 octane. While you lose some volumetric efficiency with the raised compression on a blower car and you have to back some timing off, you gain absurd amounts of hp and it's well worth it. Side effect is, stock bottom ends are not suitable to such duty for long (pistons are not right for it). The modular motors respond well to bumps of both compression and boost and there doesn't seem to be an upper limit as long as you're willing to pay to play.

 

i thought he was saying just the intake and cam swap adds compression, i was like wtf how does that work.

Yeah i would have no problem shoving 8-9 psi on a daily driver down into a 96-98 motor with PI heads etc... The compression ratio isnt that high that you cant run a blower on pump gas.

 

Umm I don't think a full PI swap nets you 60-80hp. Maybe flywheel HP but to the wheels I believe a full swap is close to 50 max to the wheels.

Also yeah I meant a full headswap raises the compression ratio to 10.5(+-.2):1, not just cam/manifold swap. What I meant to say is that the difference in power gains between a FULL PI swap (heads, manifold, cams) is 15 or so HP i believe at the wheels. A LOT of that 10-15hp gain from the heads is due to the compressioni ratio bump, IE the heads aren't THAT big of a factor. IMO you'd be better off keeping the 9x:1 ratio and adding that extra 5psi of boost and see better gains.

I also didn't mean that a full PI swap meant no Forced Induction, I just meant it limited the amount of boost you can throw at the engine compared to one with a lower ratio.

 

and I have some PI cams for sale

typhoon = garbage imo