FRPP TB Worth the Price??

What pulley size? Stock is 3.3", I have a 3". I don't think you need a throttle body until you are working with at least a 2.8" pulley. Moving to the 2.8" pulley is gonna give you some belt slip issues I believe, unless you are the luckiest Magnacharger (MP112) owner in the world. If you go with the 2.8" pulley, you would probably want to get a 90mm idler for your tensioner and send the 2.8" pulley to Carbiniteracing to coat it. Bottom line is, that TB isn't where the money should be going right now IMO. The stock TB is good to 500rwhp give or take a few and unless you have a non-slipping 2.8" pulley, it's a waste of time. The dynotune is going to net you some horsepower or atleast it should, over the email tune you got. I would say my car frickin hauls a whole lotta a$$ and I'm only using the 3" pulley. Ron over at BlueCollarPerformance had a larger TB on his car. He was sitting at over 475rwhp though and he was also running an 8 rib IIRC.

Just as a side note...I got the 3" pulley and I run the ever living sh1t out of my car on stock internals. I would think about a better belt tensioner. Sqidd has one that is cheap and I haven't heard even the slightest peep of a problem with it. He takes 2 stock tensioners and joins them basically. In fact, I just got done talking to him about me possibly needing one. Depends on how my tensioner looks when I get home. It might be bent...not sure yet.

Some Have

Some have had good results with the Elderbrock Idler Arm Re-Inforcement kit it's about 50 bucks. Now this is on the 8PSI range.

Check Amazon for the Elederbrock belt tension kit it may be cheaper.

Just another option.

T Wayne

If you have a Dremel tool with attachments and various grit sand papers going down to around say 400 or so you can always clean the OEM throttle body up. The center divider between the blades should be "knife edge" sharp to help split the air smoothly as it passes over. Little things like that would be worth doing if you also enjoy working with metal.