Ok guys here is what I have. Gas milage is as follows.

1st tank, drove it just like I always do in town in 3rd gear up to 45 mph. jack rabbit starts & hard driving. 360 miles and milage was 14.99 mpg. This is my average.

2nd tank, drove it easy not turnig over 2000 rpm in OD. There was about 30 miles of some highway driving. This tank I filled up early with 277.7 miles (16.913 gal.)which is 16.42 mpg. The highway driving probably got me the 16.42.

This is what I have for what it's worth. I don't do much highway so sorry. Maybe someone else will chime in with some highway #'s

 

so i guess the point is, dont buy a v8 if u want good gas mileage?

 

So what is your point?

 

His point was he gained 1.43 mpg with it.

I can't dyno mine since it falls out of the UPD tube. Oh well. Hmmm maybe I'll put it on my step dads truck and do some testing.

 

It wont work with the UPD?

 

That's what 02Denali said. I haven't tried it yet.

 

Actually, he was sent another one by the company after he told them it didn't work with his intake (I think). But he never responded to the group to let us know if it (the replacement) fit with his UPD or not. So, I would think they would have one to work with the UPD. If not, then they might not work with most other intakes.

 

ya, um... listen... i think, i will... ya... um, i'm leaning towards a no.

 

I don't see how it would make an aftermarket intake not work since they all slip over the outside of the TB like stock??

 

Any updates to this one, I'm curious as well...