The horsepower numbers appear to be as advertised but Ford says that there is an increase in NVH with the new FRPP intake. Have any of you guys with the new intake noticed any difference from the drivers seat? (Good or Bad)

 

Good question ... How does it do on the butt dyno

 

I haven't really got on the throttle too hard yet since the upgrades. But I have a totally different car now then went into the shop. Between the engine, exhaust and rear end work it's night and day. I can't say that i feel the drop into the seat thing but definitely it's wow already at sixty, that was quick. Right now i'm trying to keep speed reasonable for NJ highways. I was up to about 20mpg daily driving on the parkway, with the reset after the tune I am working back up got it in the 14+ mpg so far. I'm expecting 1 to 2 mpg less with the 373's in the rear but I will find out soon enough. For NA it's quite fun to drive. Still have the procharger option going now.

 

Oh boy... Have you guys seen this thread? http://s197forum.com/forum/showthread.php?t=40496
Watch the video in the first post.

 

Wow. That isn't good.

 

If anyone here who has this intake on their cars can go look under the hood as someone else revs the motor to see if you get similar results it would be appreciated. I have this sitting in my room and now don't know what to do.

 

Mine does it slightly also when the intake pulls vacumn. The fuel rail moves slightly along with it. FRPP says that it's not an issue. I am OK with that, unless I hear otherwise.

 

WHERE"S THE FREAKEN DYNO NUMBERS???????

 

There are a bunch in the new MMFF this month.

 

Who cares about dyno numbers. I'd rather know if this thing is going to crack on me or cause a fuel issue.

 

Anyone have any real world numbers on this intake yet?

 

I am thinking about this intake for my own car, but now I’m confused after all the reading up on the intake. So I just want to add my two cents on this issue. After seeing the videos of the intake flexing on S197forum I still wonder about fuel leaks and cracking. I noticed that the side of the intake “balloons” or “oil cans” more in the middle than at the ends, and the intake seems to move a awful lot more than the 1mm stated in the article in MM&FF. (See Quote1)
While I’m at it I don’t get the difference between “ballooning” which ford said was bad, and “oil canning” which they say is normal. (See Quote2)
My concerns are that if the intake is only flexing in the middle it could lead to fatigue and stress cracking especially in the winter, and that it would move or bend the center two fuel injectors more than the ones on the ends increasing the risk of fuel leaks.
There is quite a lengthy discussion on S197forum (see link) that talks about the why it flexes but doesn’t address my concerns.
Are there any “Ford insiders” or “Guys in the know” that can explain these issues or non-issues to me.

Quote1 from the MM&FF article,
“According to Kershaw, Ford Racing tested the Three-Valve intake to 2.5 bar pressure, or roughly 35 psi, and after some ballooning in the early development phases, the intake manifold has specific reinforced areas, which allow for extremely high boost levels.”
http://www.musclemustangfastfords.co...ing/index.html

Quote2 from the S197forum,
“The latest communication with FRPP:
Sam, This statement from our 3V Intake manifold engineer follows:
Some fuel rail movement on the 4.6L 3-valve manifold is normal.
During the design and validation of the intake we noted a 1mm movement in the manifold at the injector boss. This deflection angle can make for greater movement at the fuel rail.
Any flexing or "oil canning" is consistent with our testing and will not lead to premature manifold, injector or injector o-ring failure.
The manifold was designed using the latest modeling not only for performance but for durability and manufacturing.
We have had zero failures with the manifold.
Our proprietary test procedures include extensive testing on engine dyno, in vehicle testing and hundreds of hours of on-track testing. The M-9424-463V manifold passed all tests prior to being available for sale.
This intake was tested to 3 atmospheres, so the supercharger will not be a problem.
Happy Motoring, and any other questions, feel free to cal again.
Thanks, for your business!
Steve Horn
Ford Racing Tech Support
800-367-3788”
http://www.s197forum.com/forum/showthread.php?t=40496

 

I'm not an engineer and I don't pretend to be. That being said if you mechanically engineer something whether that be a bridge or an intake manifold you need to design around common loads and physical movement. A bridge needs to be flexible to account for it's weight, the weight of traffic and wind among others
things. It is designed to move and withstand with those loads. I have seen auto engines that needed 4 bolt mains, rocker arm girdles, lifter galley supports, but nothing to strengthen an intake manifold's stresses. This is the first intake I've been made aware of that moves enough to be seen by the naked eye. If they designed it to flex like it does to compensate for stresses then why didn't they say so from the start? Will it fail? I have no idea. We haven't seen anything so far and we might not. My admittedly uneducated opinion is that if they were to cast the manifold 1 or 2 mm thicker they might not have the flexing that has been documented.

 

Hey guys sorry it has taken me so long but I have been on vacation in Japan for the past couple of weeks and didn't have access to the internet, but i am picking up the car tomorrow and will show the dyno graphs ASAP!!!!

 

Okay, here's the dyno from my install. FRPP intake (the breathing one), throttlebody, steeda UDP, FRPP hot rod cams, JDM CAI/tune and Kooks LT catted. Got 3.73 installed with that today did the one piece driveshaft and roush extreme cat back. Definitely loud when you get on it. The dyno was done before today's installs. Going to wait for some cool weather and maybe retune and see what the DS/exhaust did for rwhp.

 

^ That's close to 335rwhp SAE corrected not sure about the torque.

 

All I know that it was a hot muggy jersey day 90's and 50% humidity when this was done. It was a big jump over the base that an auto gt would put out on the same day. very happy with the combination so far. Will go back in Oct to do a cooler weather pull and tune I think.

 

I'm waiting on the graphs and then I will post my numbers...

 

Still hoping the intake manifold works out for you guys...but still think it is mostly eye-candy. As far MMFF numbers etc...they rely on the advertising and info received from the vendors.....

Probably seem a tad on the negative side with my posts but like my bros who are into full out performance and have modded their stangs to the extreme (and dropped $50+K in the process), we have all had positive and negative experiences with vendors, tuners, performance claims etc etc etc. Keep it real.

 

I found this info at:
http://www.fordracingpartsdirect.com...-9424-463v.htm


The M-9424-463V 4.6L 3-Valve Performance Intake Manifold normally shows flexing of the manifold body during normal operation with some fuel rail movement. Our testing shows this flexing will not lead to premature failure of the manifold, injector or injector gasket. Ford Racing will replace any M-9424-463V 4.6L 3-Valve Performance Intake Manifold that fails due to defects in workmanship or materials within three (3) years of the date of purchase. Proof of purchase will be required for submission of warranty claim. To the extent allowed by law, this warranty does not cover towing, shipping, removal, installation, rental vehicles, storage, loss of time, commercial loss, loss of use of vehicle, inconvenience, incidental or consequential damages, or other economic loss. Contact the Ford Performance Call Center at (800)367-3788 for details. Damage as a result of improper tuning is not covered.