Review on Enhance Performance with BBK 3501 Twin 56mm Throttle Body for Ford F Series Truck and SUV 302, 351 by Jay Blo

Lots of problems with this thing: 1. The upper radiator hose was leaking right out of the box.2. Throttle spring broke after 33 days of use.3. The spring is too tight. You actually have to step on the gas pedal to move.4. Poor Customer Service: BBK FINALLY contacted me 3 days after Revain fixed my situation and returned TB. Since the TB spring broke after just over a month (33 days) of use, the 30 day return has expired. I contacted BBK and they never replied to me so I decided to contact Revain and they did the right thing by giving me a one time refund that is over 30 days. When BBK got back to me I had already returned and got my money back.5. I installed it some time after installing the Edelbrock 3881 intake manifold. I haven't really seen much horsepower gain between this and the stock TB. For 350€ I expected more. In my opinion I just wouldn't waste your money. Clean or repair OEM TB.