I have searched the internerd and I have done calculations based on books from Turbochargers by Hugh MacInnes and Maximum Boost by Corky Bell. My car: Honda CRX 1.6 VTEC stock B16A with V-AFC and DC Sports ceramic coated header. My goal: Daily driven car with 225 HP. Competing 5 days a year with dragracing for fun. Reliability is important! Calcuted: Pressure ratio: 1,49 Air flow: 275 CFM / 19 lbs/min @ 7600 rpm Boost: 0,5 bar / 7,25 PSI I have looked at a lot of compressor-maps, and although not ideal I think the best option for me is a T3 Super 60. I'm not sure what Manifold I should get. I don't want a log type but I want an equal length manifold. I've been thinking of buying a SSAutochrome (I know) and make some support for the turbo and the downpipe to prevent it from cracking. But that's not what I'm concernerd about. If you look into the collector, see thread, Ive noticed the sharp edges of the tubes. These sharp will cause some serious overheating problems and I don't think the material will sustain this kind of beating for a long time. Further I have noticed that the exit for the wastegate is pointing the opposite position of the exhaust flow making it hard for the exaust gasses to get to the wastegate. This will cause creeping. Another option for me is the one made by toyosupr, but he's not doing this for a long time plus I haven't seen any dynographs of the manifold yet. The place of the wastegate is good, except from the 90 degree angle the exhaust gasses has to make (boost creep). Plus I haven't seen any pics of the inside of the collector, so I can't compare it to the SSAutochrome. Although everyone seem very positive about his manifolds. Any other suggestions? I'm on a tight budget, so the expensive ones aren't an option... Plus I don't think they have to cost that much. Just look at the one made by toyosupr. And also I don't really know what A/R ratio I should get? Greater A/R means greater air flow/speed to the turbo (more isn't better), and lower means less. Any ideas? Because I will be running 7,25 PSI I think I would be fine with the stock injectors / fuel pump / ECU. If not I can do the AFC-hack and put in 440cc injectors plus fuel pump. IC-piping will be 2,5". Any larger will promote more lag. Exhaust piping will be 3" all the way because I don't want anything to hold those exhaust gasses back from leaving my engine / turbo. (Restrainig the turbo from running freely) So, I need some advice from all the people who have done this is practise. I know all in theory, but I want feedback from people out there in "the real world". Does the above make any sense?