I got a delete elbow, Perrin filter & silicone intercooler hoses for Christmas & installed everything at once in early January. Immediatly noticed quicker spool-up and improved low & mid range, but this was probably more from the IC hoses than the intake mods. Running a 3" Cobb turbo-back, nice combination of growl from the back & whistle from the front! Had not reset ECU since installing stage 2 map off my AccessPort last summer until I noticed I was 2 map revisions behind and just down loaded new maps last weekend. Another big kick in low to mid range, just keeps getting better. Burned a whole tank in 210 miles making sure ECU relearned my WFO preferences. Looking at my new VF34 & up-pipe sitting in the corner, waiting for backordered header & injectors to come in, then it's time for a new map again!