Biceps

Interesting. After having driven it this weekend, I notice the vibration occurring at two times. First, when I come to a stop at a stop light. Second, when I put the car in reverse and am turning the wheel.

When did you notice the vibrations?

Thanks for the information. I will be taking this into the shop tomorrow and will pass this info along to them Hopefully it'll get me in and out fast!

Mr. Ugly

I removed the pipe hangers at the crossmember also.

Helped reduce the cabin noise. I didn't have the vibration problem, but that mod is supposed to help with some types of vibration.

So_Cali

I'm thinking its gonna be this, when I first installed the GT takeoffs I had, I noticed the driver side was longer so I had it grinded down. When it came time to throw on the GTB's I had bought, I had forgotten to grind the peg down and it cause the vibration you mention. Only in reverse and at a stop...

ODDYSEY

Exactly the same. Mine was at idle, or when stopping and in reverse, around 600ish rpm's. Just remove those hangers and it will stop

Voltigasm

Man, I'm glad I found this topic. Currently I have the same problem with that nasty rattling, but it seems to also occur for me at the 1600-1800rpm region. (any gear)

Biceps

Well, I took my car in today. Everything was checked, bolts tightened up, clearance space was verified, nothing is touching the body. I even had those hangers coming off the pipes (that sit close to the cats) removed. I still have that damn noise when I am at a stop and in reverse! LOL! So annoying.

The hangers you had removed...where those by the cats, or closer to the actual mufflers? The sound seems to be coming from the driven side muffler. I am going to have to have my wife help me tonight and see if we can't nail down exactly where that noise is coming from.

And if all else fails...back to the shop she goes.

Torch Red GT

when i had this same kit on my v6 instaled it did the same thing. However after i got a tune it stopped. Probably the different idle helped out

Biceps

I have only noticed it in 1st gear when I am at a stop and when I am in reverse.

Biceps

Prior to installing the FRPP V6 dual kit, about 8 months prior I had installed the FRPP cold air intake and did the ProCal tune on the engine. At the time I also had a Flow Master American Thunder single exhaust muffler on the car. I called the tech line at Ford Racing and they said that a re-tune was not needed when installing the FRPP duals, but at this point it might be helpful. Either that, or my car is learning how to breath with the new dual exhaust and this is just part of the process. Lost at this point!

ODDYSEY

No tune is needed to install the FRPP.. but most custom tunes will increase the idle a little which helps. And yes the hangers by the cats are the one.. if you still have rattle make sure your muffler isn't touching the bumper... anything else I am not sure of.