Quote:
Originally Posted by Ruhk
I am interested although I haven't had time to put the fuel pump and boost solenoid that Ed recommended on the car. I mainly want a reliable map for the current list of mods since I probably won't be modding it further (gasp!). I don't want to worry about winter map vs summer map, high elevation map vs low elevation map. Mod list is nothing too serious: MY06 WRX, Cobb catted downpipe, Accessport V1, VF39, Ebay TMIC, STI hood scoop splitter thingy.
I am currently using Cobb's VF39 OTS map for California 91 craptane. It runs pretty well but I feel occasional hesitation (like if it were pulling timing) and also, on my trip to the bay area a couple months ago I heard a loud pop noise coming from underneath the car, as if it had unburned fuel in the exhaust that detonated? Last time I did a datalog on it, max boost was somewhere around 14.5, less than the target of 16 +/- 0.7 (15.3 LSL), and I heard that could be attributed to the stock catback as well as the higher elevation?
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You will really need to at least install a fuel pump. The stock fuel pump simply can't keep up with the flow demands on that turbo. The solenoid or MBC will greatly help with response and overall performance but its not 100% necessary for a safe tune. The fuel pump is.
Thanks
-- Ed