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Old 06-06-2010, 07:32 AM   #279
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

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Quote:
Originally Posted by wasp642 View Post
I did atleast over 100 back to back WOT pulls today to test out the new setup, well, it still occasionally does the BS where the boost onsets kinda slowish then explodes to the target, no spikes, but kinda rough on boost onset making the car buck. So i'm gonna try something else.
wasp, this sounds like an issue with your boost map and parameters.

keep in mind to sidestep all this stuff i just let my utec run the BCS in totally open loop. ie, 50% throttle = 50% DC, 100% throttle = 100% DC. it has no "target" boost level and will do nothing to adjust those hard-coded duty cycles.

i, personally, have never successfully tuned an oem ecu to act in that way. while dabbling with it i experienced behavior similar to that which you're reporting. by their accounts, others HAVE been successful, and may be willing to let you in on their boost control parameters.
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