It probably wasn't their fault. However all I did was put on a CAI. Thats it. The exhaust was factory Prelude header fitted to the Accord Cat back. No big deal. The only thing I can see is that if maybe the engine had alot more miles on it than the "30-45k" they say. Regardless, if I do another H22, it will be USDM. I'll just go to a local junkyard and salvage one, and build it up for all motor before it ever gets put into the chassis. I am still using the Lude tranny, it actually makes a difference with the F22, shorter gears help make up a little for the lack of HP.