Quote:
Originally Posted by Red Snake
I have the same set up....Belangers, no cats, Corsa track exhaust, Roe S/C. The weird thing is that from inside the car you can't hear any whine at all.  |
You should be able to hear the whistle around 1200 RPM while cruising through the hood. Both our cars whistle nicely at that RPM. 4th gear with the 00 and 3rd gear with the 01
Quote:
Originally Posted by rsmitchell10
Steve, what do you mean by O2 wide band set up?
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Go to the GEN II tuning section on this forum. There is lots of info about all this. In a quick nutshell. A wide band oxygen sensor placed in the exhaust stream (typically the collector area) is able to send a signal to your wide band auxiliary meter, denoting your AFR (air/fuel ratio). With a 5 pound Roe SC car (no water/meth)...11.5 AFR to 11.9 or so is the targeted number. (as opposed to a naturally aspirated car which can run leaner -- roughly 12.7 AFR I think) Knowing this number enables maximum tuning because the VEC can be programmed to add/subtract fuel as required at WOT. This AFR number becomes very important as the outside ambient temperature changes. Particularly on cold days. You will run too lean and risk engine damage if the car is not tuned properly for the lower temperature (more fuel). Conversely, on a hot day, you will run too rich --- which can't really hurt the engine, but performance will suffer.
If you add a Roe SC, and will only drive it in the temp it was tuned at, you will have no issues without a wide band set up. however if you drive your car in varying climates, I believe it a must to see the AFR. My meter is mounted on the steering wheel. BUT...the VEC 3(VEC 2s can be upgraded) has a tool which can take care of this problem fairly well. The IAT function. I don't hear a lot of people talking about it, but it works quite well. I have it dialed in for basically any temp we run in (30F-100F)
Damn Yankee has some excellent tutorials in the tuning section on how some of this stuff goes together.
It's not very complicated, but is a lot to absorb at one time. Try cruising through the tuning section and doing a little studying.
Steve