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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
Posts: 5,560
1. Adjusting CO doesn't do much about AFR's where it matters: at high load/high RPM. CO 7% is too rich. 3.5% is OK. This only affects emissions at low load.
2. CIS runs pretty rich ex factory. As long as you don't boost more than 0.8 I don't think you'll have a problem. CIS only meters incoming air and injects the fuel accordingly. It doesn't give a damn what is doing the sucking.
3. I find dyno time unnecessary. It's often expensive and measures the things out of cars natural habitat = street. LM1 or LC1 is extremly useful gadget. It can log AFR's, RPM and boost. With other words, all you need to ddo is hook it up and do a lengthy pull in 3:rd gear on a highway = instant dyno.
4. There is no break-in for the turbo. It spins at 100000 RPM+. Just make sure it's properly lubed ex installation. After that, it's spinning on a oil-film, no mechanical contact, nothing to wear in.
5. 0.8 bar spring is prudent and good thing to do. You can always raise boost afterwards with EBC or T-orifice. You cannot do that as easy if you have a stiff spring burried in the wastegate.
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Old 08-15-2007, 01:55 AM
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