I was going to make 4 star based on price but their competitors is more. I'm an 034motorsport fanboy but extra cost not necessary as stock hose clamps worked and even if new parts stores are cheap.

Anyway I just like these. I really need to run some logs but would think flow more than factory accordion hoses. I have a P3 guage and watch my IAT temps religiously. For months I wrote down ambient temps vs IAT temps at different RPM's. I consistently run around 5 degrees cooler and at times 12 degrees cooler.

For those who like sound, I'm one of them, it does increase spool sound.

On spool again I watch boost and RPM religiously factor in ambient temps. After hoses boost comes in 200rpm sooner in 88 degrees. With cooler weather 400+500 rpm sooner.

In all these won't give you much. They do work as designed. There's almost no info on these so thought would provide feedback. I know what air volume is for factory hoses and intercooler. Someday will run log to see if that improve gram per second. I messed up by not doing stock hose run.

I have unitronic stage 2hpfp, jhmotorsports 3" test pipe, techtonics 2.5" downpipe, stock air box with are drop in filter. Stock intercoolers to give tune, intake, and exhaust mods