what's a good combo for a new TB and spacer, can you use both?

2001 F150 Screw with 5.4L and K&N Series 77...

will this affect my Hypertech Power Programmer in a negative way? That thing is tuned on a stock truck....

 

The spacers are a waste of money, A 75mmTB will help some from what I have heard.

 

I have a 75 mm BBK tbody on my truck. I also ported the elbow begind it to match. It works good with the other mods I have

 

spacers = paperweights... nothing more... pm me for my address and i'll send you a small piece of aluminum for less than the cost of the spacer - it'll be better for the both of us

 

Those spacers are a joke,and as it's already been said- are worth nothing. A larger throttle body only makes it "feel" like you're gaining power. In reality,all you're doing is allowing more airflow to happen at partial throttle than the OE throttle body does. Max airflow will not change-a 70mm throttle body is sufficient to supply air to a very aggressive engione with alot of camshaft and headwork,along with a much better intake manifold.So believe me-you're going to gain nothing by changing the OEM throttle body on your truck engine to a larger one.
JL

 

Thanks guys...I'll stick with the mods i have now....appreciate it.