Fox throttle body swap (First impressions)

[VIPERn94Five-0]

I still don't understand how the fox setup is a benefit. The air must make a 90* turn instead of a 45* which should be better. I just don't understand why this swap makes a difference in power....

im with you Paul!....the air STILL has to make a bend...and with the fox setup its actually a near 90* while the elbow is a 45*...maybe it has something to do with the air bending before the TB instead of after....and the power is lost as the air goes through the elbow then enters the manifold....i wanna see Andy(RIO 5.0) post some before and after dyno graphs maybe when he finishes his...cuz its debatable wether or not it looks better(sometimes i think it does sometimes i dont) and its time and money (granted not much) that i dont want to spend if its not gonna give me anything power wise...now if guys are seeing 10hp on a NA car then ill do it....could the Fox TB swap be the answer to the question of why HCI SN95's tend to dyno just shy of 300RWHP while the Foxes with similar setups tend to dyno just north of 300RWHP???....hopefully we will find out



Anthony

 

[VIPERn94Five-0]

oh and one more thing.....


Andy have you made a CAI for the fox setup??? or are you gonna run a factory style setup???? im curious cuz ive always wondered how the best way to do a homemade CAI on a fox would be....cuz i really like how we can make the straight shot PVC intake with the SN95 style....


sorry for not editing but didnt want this question to get lost in my last post....



Anthony

 

[Bling]

For n/a guys I guess the up sides would be wider selection of T/B's. Companies like Accufab won't make a 94-95 unit, so there's no polished t/b on the market (besides polished/ported stockers). Should you want to use a 90mm (if your setup warranted one so large) you could. V/C clearance is no longer an issue. I'm going by the idea that air will travel the path of least resistance . I'd rather have one large 90deg bend than 3 small 45's (with the stock vortech and t/b elbow assy).

 

[RIO5.0]

Here's a link to the parts needed.....

http://gallery.stangnet.net/showpho...7552041adb96cf644c703dc7f2be61&sort=1&cat=500

Anthony.I made a PCV set-up just to get it running, nothing fancy..I'm in the process of figuring out a CAI....gonna be a straight shot to the Pro77 in the fenderwell....You need a mellow sweep outta the TB atleast....My dyno guy re-opens in April...I'll be ready....

 

[VIPERn94Five-0]

Here's a link to the parts needed.....

http://gallery.stangnet.net/showpho...7552041adb96cf644c703dc7f2be61&sort=1&cat=500

Anthony.I made a PCV set-up just to get it running, nothing fancy..I'm in the process of figuring out a CAI....gonna be a straight shot to the Pro77 in the fenderwell....You need a mellow sweep outta the TB atleast....My dyno guy re-opens in April...I'll be ready....

sweet, id be interested in seeing your CAI whenever you finish it up....after more people get this Fox swap done id like to see some back to back dyno tests of different styles of intake to see what the best setup is....im thinking maybe a soft fernco elbow off the TB...to the pvc and then a fernco coupler to the MAF??...




Anthony

 

[RIO5.0]

Here's the TB as it will bolt to the upper, throttle bracket and cable connected.
http://gallery.stangnet.net/showpho...7552041adb96cf644c703dc7f2be61&sort=1&cat=500

I had one CAI running but since i knew i was gonna swap to the 93 Cobra, that one went...
The Fernco's looked ok on the old set-up, but one at the TB is kinda to much to me, looks homey...one of the connectors like Bling has is what I'll do...Prolly 3" polished alum in one pc to the MAF....Black plastic would be cool to, for temp reasons...Hard to find the right stuff...

My next dyno will show the Cobra/Fox TB compared my Tmoss ported stock lower, and 24s being in from the 19s...should be a good comparasion...

Edit...Bought me one of these to.... Figured the stockers got 66k on it...This way I don't have to worry about PIP or stator problems showing up...plus its a purdy mother...
http://gallery.stangnet.net/showpho...7552041adb96cf644c703dc7f2be61&sort=1&cat=500

 

[ProKiller]

why did ford switch to it then? it obviosly fits under a stock hood so why? can you now run an intercooler with the Fox T/B?? as we all know, Procharger is the only company that makes an intercooler for our cars. that would be the only reason i would switch.

 

[jmuva44]

I actually like the look of how ours are set up better. As far as the benefits, I am thinking along the lines of yellow5.0cobra. I dont think that one bend of 90 degrees is enuf to really slow the air down. I'm thinking maybe the curve actually gives it some inertia going into the TB. Or maybe it is because the curve is before the TB on the fox setup vs. after it as on our cars.

 

[My95.0L]

Guess I'll chime in here. I did the swap a year or so ago. Seat of the pants dyno said it felt faster, responded quicker, etc. However, the track said otherwise. I lost 2 tenths & 2 mph from swapping to the fox set up (went to the track twice to confirm, and yes I made sure to check the temp. & humidity to confirm they were about the same).

Here's the original post.....well it's part 2 of the original post
http://forums.stangnet.com/showthread.php?t=537349


And let me say this, what works for one car doesn't mean it will necessarily work for another.

 

[4Jenna]

On a 94-95 Vortech'd car the gains are there period...sorry for the non-believers. As for N/A I cant see much of a hp gain.
Back to the blower guys most use a 3" pipe like bling did it looks like which that alone is a HUGE improvement over the Lil 2 1/4 Vortech piece..much much more volume of air entering the engine.
Also if you look at the stock hardaware (discharge/tb/tb elbow) there are atleast 3-4 bends in this setup where the fox has ONE bend..less bends=better on any intake tract.
Hope this helps some.

 

[Zero Signal]

I can definitely see the gains for a blown car since that little output pipe is so bent to hell to work with the stock TB position, and it's all tweaked right at the outlet which seems to me to kill the efficiency.

As for N/A, I don't know how it could make any difference.

 

[MustangGT95]

Could you just run a fox CAI setup?

 

[18mustangs]

On a 94-95 Vortech'd car the gains are there period...sorry for the non-believers. As for N/A I cant see much of a hp gain.
Back to the blower guys most use a 3" pipe like bling did it looks like which that alone is a HUGE improvement over the Lil 2 1/4 Vortech piece..much much more volume of air entering the engine.
Also if you look at the stock hardaware (discharge/tb/tb elbow) there are atleast 3-4 bends in this setup where the fox has ONE bend..less bends=better on any intake tract.
Hope this helps some.

It isn't very scientific, but the SOTP meter really felt the gains when I switched to the Fox setup. Throttle response was also night and day.
Tim

 

[SWYZ721]

Maybe the FOX TB goes WOT sooner (with less input of the pedal) thus the appearance of a gain.

I really can't conecieve why it would be any better. The bends are more ridged and less smooth. Boosted might be a different story, air still behaves like air, only bends aren't as significant, also the line is blurred when boosted, not to mention the people dumping fuel with 11-12 A:F ratios (that's a whole 'nother argument)

So far we haven't seen ANY actually proof besides hearsay and fox mulder-people.

The track result is closer, but must be thrown out because there are way too many variables.