Blow Off Valve Needed?

[R31Nismoid]

I run an ARC twin entry intercooler kit on my GTR(same as the mines one) The kit comes with plugs tp block off the BOV's. The car runs 370-380rwkw and 22psi. The combination of this cooler and blanking my BOV's resulted in 25kw extra mid-range. I don't know how much is associated to the cooler or lack of BOV's, however the bleed hole that recirculates air(whilst the BOV is closed) can only delay spoolup.

Midrange wont be from the BOV's, its impossible to allude to the fact this is so.

How can something that only operates on throttle off... possibly increase power unless its faulty to begin with? because it simply cant

I bet if you put the stock BOV's on, you wouldnt notice a difference in the power

[Col-GTSX]

Personally Im going to run a turbosmart plumbback 38mm. (Refer my signature)

2 reasons;

1. Emissions (Im still running an AFM so i want the air to recirculate, keep the mixtures lean and rule out over fueling to prevent stall)

2. Legality (The popo wont book me for chatter in other words loud noise's)

[mad082]

for anyone wanting to compare a race car with no bov to a road car, consider the following-

using qld raceway as an example, a race car will lift of from wide open throttle 6 times (there's 6 corners isn't there).

now if you take your car to the track, on a flying lap, from the start of the straight to the start of turn 2 you will have lifted off the throttle more times than that. race cars don't lift off on gear changes. most don't even use the clutch.

so why would a race car need a bov? the slowly wind the accelerator on just after they turn the car into the corner, so if there is any extra lag from not having a bov, it doesn't worry them as they don't really have any on/off throttle aplications.

[rev210]

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Edited November 6, 2006 by rev210

[_8OO5TED_]

thanks all, i have both a GTR and a GTS bov so I will most likely fit one of them up and do away with the Turbosmart item. Thanks