Trick Flow Engine Kit - Rough Idle & Bucking

Ed Calvert said:

Hello all,
I just had the trick flow twisted wedge kit H/C/I installed on my 95GT and am experiencing some rough idle(which I expected) and an annoying bucking problem at about 1500RPM. Above 1500RPM things seem ok. An example is when I let my foot of the gas while in gear the car jerks front to back until I give it more gas or drop to a lower gear an raise the RPM's.
The installation was done by a Ford dealer and includes the following:
24# injectors, BBK T.B., Pro-M MAS, 195lph fuel pump, fuel press. regulator 35# at idle and a MAC fender well intake.
The mechanic said that he had to tweak the Air Bypass valve on the BBK even though the instructions that came with it said it was factory set. Trick flow wasn't much help over the phone. Any help / suggestions would be greatly appreciated.
Thanks
Ed

Click to expand...

I wonder what kind of tweaking he did to the IAC valve. I assume the cam is a stage 1 cam, right? I can't remember the specs on it.

From what I have been told, the computer needs time to adjust to the cam. I cannot confirm this from experience, but just from what I have read.

Final solution = tune or tweecer. Immediate & temporary solution, maybe you should try opening up the screw on the top of the TB to let more air into the motor with the throttle closed. That may stabilize the "bucking". Just screw it clockwise & count how many turns it takes to close it fully. Write that down so you can change it back to factory settings later. Then open it back to where it was before, and open it a couple turns past that. See if it helps. If it does, open it some more until you are satisified.

Let other people post first on this thread before you actually do anything. I have no first hand experience on this, so just consider my post a "TTT" post!
Scott