Just to add a few comments , when we did the original development on the MKV Golf we undertook testing with 3 different types of air core , including bar & plate ,we looged intake temps on the road and tested on the dyno , , please dont thik we just offer on the forst air core we can find, the Twintercoolr is tried and tested , the pressure drop is next to nothing , most of the misinformation has been caused by other manufactured brands . We have never seen an increase in water temperatures whne fitting the twintercooler , again in the development stages we send a Twinter to one or our Dubai dealers to test in 40 degree heat , this was also undertaken on the race track , the temps didnt increase at all.... please remeber when you buy from Forge you are buying peace of mind , if you are not happy , you simply send it back for a refund !!