i'm looking at Eisenmann Race, RPI Gt, and ASR. Each one sounds good in its unique way so it's really hard to decide... i'm pretty sure that i'm not the only one went through this...
I currently have the Eisenmann Race Section 3, however that was way before the RPI & ASR released their exhausts. I love the E-Race, however I doubt if they show any power gains at all. They are merely about F1 sound only. As for RPI & ASR, they provide both an amazing F1 sound with proven gains. If you intend to go with RPI, I suggest to go with Sect. 1 & 3 and if you want it to become more agressive you then can get Sec. 2.
Exterior: Vorsteiner CF Vented Hood, RH Type CF Splitter, Upper CF Mirrors, CF Side Skirts, CF AC Schnitzer Style Trunk Spoilers, CF Side & Kidney Grills, Black Powder Coated Lower RaceMesh Grille, CF Pillars, all Roundels in CF, Red Angel Eyes, OEM Smoked Tail Lights, Smoked Side Markers, Brake Calipers Painted in Red with CF ///M Decal
all of these systems will be dramatically louder than stock
Handdoc, I'm not sure about ASR, but RPI ST exhaust is not extremely loud like the E-Race. The RPI GT is a bit more agressive than the ST.
Moji, you can check out these interesting threads. Some include video clips, pictures, and personal feedback from members. It might ease your decision making:
One word of advice, you need to be very careful when combining different sections (1,2,3) from different vendors. Some might add gains, however some on the other hand make you loose hp. One thing for sure, if you go with RPI Sect. 1, 2, & 3 you'll gain hp. Good luck!!!
Go with RPI GT. I have it and LOVE it! It sounds soo amazing, when I first got it put on, I was getting less than 150 miles/tank just b/c i wanted to hear it all the time! I promise you will love the sound of this setup!!!
I have full RPI system (headers, ST section1, GT section2&3). The exhaust tone very depend on individual preference. Both RPI and ASR proved some gain and they both lighter than e-race.
Next consideration would be, do you want the whole system, or just a section3. RPI gives you a flexibilty to choose section individually while ASR sells as one full system(section1&2&3)