madhat I would stay around that 62 you are looking at maybe a 64. you can use that in a twins setup later also and it will still be really drivable. I had a sps 66 on my 05 and it did ok but the bigger you go the worse its going to tow in my opinion. if you end up with something bigger like a 66mm injectors help out alot to get it lit up. good luck on your search

 

No they dont. But i found one new that a guy had bought and it was for the wrong motor. He had it for about a year he said. Ats said they quit making them about 6 months ago. Thats the history behind it. Theres not much difference if you do the research. I know every bit helps though. I think its like 100 cfm's more and the boost is a little higher. Both non wastegated, dont know how that would work with twins to begin with, unless you buy a blowoff valve or something. Still researching on turbos, its a never ending journey it seems.

 

The cast elbow hot pipe from primary to secondary has a wastegate in it.

The A5k is not wastegated...neither is my S-480...it does not need to be unless you are overspeeding your secondary or making too much boost.

The ATS twins are nice...