Changing BOV Gains 30HP
#3
Crappy valves are crappy valves. Most OEM DVs are complete garbage. Pretty much any descent aftermarket valve would see those same results, all you guys buying junkyard valves are doing yourselves a disservice. Just stay away from valves that can't in some way be tuned, there is no "one size fits all" sealing mechanism.
#6
Actually I said "most". The problem is making a claim like that is similar to saying that a factory intercooler works perfectly, without trying something better you have nothing to compare it against.
I deal with people all the time that upgrade their OEM valves and have "drive-ability" problems that turn out to be caused by the new valve performing better and maxing out their injectors, MAFs, or fuel pumps.
DSM, Subaru, Mazda, VW, BMW, Toyota...
I deal with people all the time that upgrade their OEM valves and have "drive-ability" problems that turn out to be caused by the new valve performing better and maxing out their injectors, MAFs, or fuel pumps.
DSM, Subaru, Mazda, VW, BMW, Toyota...
#8
I bet they just turned the boost up
FM also noticed this on the MSM...and without switching to some BOV whose name sounds like a black womans *****.
http://www.flyinmiata.com/tech/dyno_...boost_leak.pdf
FM also noticed this on the MSM...and without switching to some BOV whose name sounds like a black womans *****.
http://www.flyinmiata.com/tech/dyno_...boost_leak.pdf
#10
Tour de Franzia
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I don't understand how adding a blow off valve can change output unless the wastegate is closed and the turbo is never spooled. If the BOV is bleeding off boost, the pressure will be compensated with the wastegate.
Oh, and that synchronic **** is ******* stupid. If it weren't so expensive then maybe I'd buy one...but this **** is retarded. Give me the one which lasts the longest v.forge
Oh, and that synchronic **** is ******* stupid. If it weren't so expensive then maybe I'd buy one...but this **** is retarded. Give me the one which lasts the longest v.forge
#11
A leaking valve can put the turbo into a different part of the efficiency island, that's one way. That alone can effect power just by higher intake air temps. Those same temps can lead to timing retard, again less power. Spool will be slower, so everything below when peak boost is reached will be lower.
This can be very minor or it can be pretty significant, the turbo is drawing in more air to reach the same boost pressure so the bottleneck of the pre-turbo intake system becomes greater. And, this is a long shot, if recirculated back into the turbo intlet pipe, all that expanding air from the valve can create turbulence or cavitation or some otherwise undesirable phenomena which can lead to less power by interrupting the passage of air into the turbo.
This can be very minor or it can be pretty significant, the turbo is drawing in more air to reach the same boost pressure so the bottleneck of the pre-turbo intake system becomes greater. And, this is a long shot, if recirculated back into the turbo intlet pipe, all that expanding air from the valve can create turbulence or cavitation or some otherwise undesirable phenomena which can lead to less power by interrupting the passage of air into the turbo.
#12
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Actually I said "most". The problem is making a claim like that is similar to saying that a factory intercooler works perfectly, without trying something better you have nothing to compare it against.
I deal with people all the time that upgrade their OEM valves and have "drive-ability" problems that turn out to be caused by the new valve performing better and maxing out their injectors, MAFs, or fuel pumps.
DSM, Subaru, Mazda, VW, BMW, Toyota...
I deal with people all the time that upgrade their OEM valves and have "drive-ability" problems that turn out to be caused by the new valve performing better and maxing out their injectors, MAFs, or fuel pumps.
DSM, Subaru, Mazda, VW, BMW, Toyota...
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