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SVTPerformance's Chain of Restaurants
Tuning À la carte
I need advice from experienced tuners
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<blockquote data-quote="jscanlon" data-source="post: 12200494" data-attributes="member: 139100"><p>Ok so I figured it out. I had a number of things going on. First I didnt realize it but the bov wasnt staying all the way open when idleing or at steady rpm and was causing compressor surging and screwing up the signal. I also had a couple vacuum leaks. Everything is much better now. Currently I have it tuned pretty good up to 5300rpm when the pump hits 99.9% duty cycle. Its a 255lph high flow perf pump. I did a power wiring upgrade for the fpdm and fp. I'm gonna try hole sawing some holes in the pump basket to see if that helps. Any other ideas other than dual cobra setup or bap? </p><p></p><p> The other issue is the bov, even at full open doesnt seem to allow enough air evacuation and is still causing the blower to surge after letting off at above 3000rpm or so or when slowing down in gear as the engine winds down it also does it. Instead of a steady rush of air, I am getting a fluttering air sound and the bov diaphram is staying full open. Do I just need another or a larger bov to fix this? Also, this compressor surge is pretty bad for the blower correct?</p></blockquote><p></p>
[QUOTE="jscanlon, post: 12200494, member: 139100"] Ok so I figured it out. I had a number of things going on. First I didnt realize it but the bov wasnt staying all the way open when idleing or at steady rpm and was causing compressor surging and screwing up the signal. I also had a couple vacuum leaks. Everything is much better now. Currently I have it tuned pretty good up to 5300rpm when the pump hits 99.9% duty cycle. Its a 255lph high flow perf pump. I did a power wiring upgrade for the fpdm and fp. I'm gonna try hole sawing some holes in the pump basket to see if that helps. Any other ideas other than dual cobra setup or bap? The other issue is the bov, even at full open doesnt seem to allow enough air evacuation and is still causing the blower to surge after letting off at above 3000rpm or so or when slowing down in gear as the engine winds down it also does it. Instead of a steady rush of air, I am getting a fluttering air sound and the bov diaphram is staying full open. Do I just need another or a larger bov to fix this? Also, this compressor surge is pretty bad for the blower correct? [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
I need advice from experienced tuners
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