The 65mm, 70mm and the 75mm were all $159. But I just have never heard to Pro Producations. 94GTStang did you think getting a TB was a good buy. Did you pick up much power or throttle response. What does you GT run in the 1/4.
I have a BBk unit and have had no problems with it.
I haven't ran the car since it was bone stock 4 years ago. I did get some better throttle response, but other then that I couldn't tell you. Plus it's been on for two years.
When I bought it, I was going to do heads and cam, but that plan has changed along with my bank account.
i have the bbk 70mm as well. i got the throttle body when all i had were exhaust mods and an intake. i saw no gain with it, but knew what my plans were for the car and bought it anyway. i would much rather spend the money once and grow into the parts than buy smaller now and need to upgrade later.
If you get a 65mm now, you will have to grow A LOT for that not to be sufficient.
I was in a shop last year and read an article from like 3-4 yrs ago in 5.0 where a 70mm LOST HP on a motor with just exhaust done. The 65 had some gain.
Put the tb on first cause it was an easy install and I wanted to see how much of a gain I got.
Tweecer showed I moved more air with the 65mm for sure. Low & mid range rpm felt stronger also. Top end seemed about the same but remember still using stock maf and catback at that time.
The Pro-m 80mm is big *** I'm talking really big!!!
I got it in the fender with a home made cai but not going to keep it that way. I was going to use a power pipe but that deal fell kinda fell by the wayside due to a different kind of pipe from what I was told.
I'm still dialing in the maf curve which means spark is pulled back and no WOT stuff so I can't say anything about what gain the maf will bring. I made a pull at 1/3 throttle to about 4k and Tweecer showed more air moved over same kind of pull with stock maf. To me that is a good sign.