yup installed them last night, general thoughts, the engine revs a bit quicker, feels smoother, feels a bit quicker through the mid range power 2500-4000rpm. If they really improve MPG like they say then i say go for it, if not save the money.-Just my thoughts

 

good to know

 

They did make a little difference for me. Especially on the high end.

 

you mean high end power or at puching it at highway speeds, if thats the case i havent tried it yet.

 

Both actually. Even though i couldn't feel an actual difference, it made a difference when i raced my brother. Before the udp's my bro (he has a 06 gt) would pull me ever so slightly once we hit 3rd gear...every time. After the udp's we were dead even through 3rd and 4th...every time. So, there was at least a definant difference in the higher gears.

 

i heard that those were a "good" bolt on that made ~7rwhp, more then most other bolt ons(not LT's or O/R h-X). Just things i hear, i might be wrong

 

Well, most people on here say they're a waste of time, but i think they're a great mod for the money personally. I agree they're not like a good set of long tubes, mid pipe, or tune, but they are also a cheaper mod too.

 

good to know. thanks for the info.

 

Cause when that extra 5rw kicks in it makes world fly by like a video game and the $200 pays itself off ten fold. Then there's the increased harmonic control on the crank...Who needs the last 80k miles from an engine anyway.

 

yea i got em for 100 bucks brand new on ebay, so to me so far its worth it. I def feel the engine rev quicker. I drover drive my car very hard though so i havent noticed anymore.