Boost Problems!
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Boost Problems!
OK When I was out tonight with VinylPlaya we were watching my air/fuel gauge and my RPM's. We noticed at 3500-4000 RPM range it ran lean and bogged down. As soon as I hit 5200-5400 it started to pull hard again. Anyone got any advice?
are you using any kind of VAFC to control your fuel/timing? Was it dyno tuned? when i had my safc hooked up for 3 days before it got dyno tuned my power delivery was all over the place...down low itd be semi rich then up high it would just pull like whoa. And in between 3500-4000rpm did the boost change any at all?
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i have a VAFC II for fuel but its at 0 Correction all the way accross because i don't know where to start. at 4500-5000 RPMS it just completely boggs if i punch it to the floor (im an auto)
youre probably not getting enough fuel, the only way i can think to completely solve this is get a dyno and see your A/F and how it really changes per rpm rather than just a needle, or id get a wideband, but either way it'll have to be tuned. i know you're not running the sf fuel kit, do you know what fuel/boost ratio your fuel pumps running? (mines set at 11lbs:1psi), from there you should be able to set your fuel maps on your vafc II
yeah your gonna either need to get a wideband or get tuned. you need to set your fuel map. try playing with the vafc settings wheer it boggs down . see if it makes a diff. if it does then you know you need to get tuned.
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