BOV madness
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Originally posted by "Someone"
Originally posted by dan venting and recirc. dont make much difference unless u r anal about losing maybe .5 mpg or dont like the loud noise.
Originally posted by dan venting and recirc. dont make much difference unless u r anal about losing maybe .5 mpg or dont like the loud noise.
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92' Nissan 240sx
02' Honda VFR Interceptor
08' Tundra
92' Nissan 240sx
02' Honda VFR Interceptor
08' Tundra
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you get better idle you dont run rich your car wont stumble/hesistate. Recirc is the way to go. Yea i know the cool BOV noice and all but like ive much rather have a better running car than a cool noise. just my .02 though.
Matt go to sleep hoe
go to sleep ring
go to sleep bolt
Matt go to sleep hoe
go to sleep ring
go to sleep bolt
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Originally posted by "Someone"
Originally posted by Boosted Z31
none f that will happen if you adjust the bov correctly.
Originally posted by Boosted Z31
none f that will happen if you adjust the bov correctly.
lifelong learner
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well on our nissans when the tps reads throttle closed the injectors are off until the car returns to idle when the iacv comes on. next.
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rest in peace tim.
Advocate for the People's Republic of Awesome
rest in peace tim.
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I beg to differ. How come *all* factory turbo cars equipped with a MAF or MAS such as Nissan Toyota Mitsubishi Ford etc...) reroute the BOV into the intake? On the other cars listed above dont the injectors stop cycling on deceleration as well just like our Nissans?
On a MAF equipped car dumping the BOV to atmosphere *will* cause the car to run rich after shifts 100% of the time. There is no other logic to it. The air is being metered by the MAF and the injectors are supplying the correct amount of fuel for the given airflow. When that metered air escapes the fuel is still added by the injectors.....right up to the point before they stop cycling. It is all a matter of the sequence of events that occur up to an including the shift into the next gear.
I dont see why everyone wants to dump the BOV to atmosphere anyways. I can still hear my BOV even though it reroutes back into the intake. If you want to be a riceboy and have a cool sound with your rerouted BOV then you also add a NA blow off valve speaker thing. Chicks dig it.
On a MAF equipped car dumping the BOV to atmosphere *will* cause the car to run rich after shifts 100% of the time. There is no other logic to it. The air is being metered by the MAF and the injectors are supplying the correct amount of fuel for the given airflow. When that metered air escapes the fuel is still added by the injectors.....right up to the point before they stop cycling. It is all a matter of the sequence of events that occur up to an including the shift into the next gear.
I dont see why everyone wants to dump the BOV to atmosphere anyways. I can still hear my BOV even though it reroutes back into the intake. If you want to be a riceboy and have a cool sound with your rerouted BOV then you also add a NA blow off valve speaker thing. Chicks dig it.
lifelong learner
Joined: Jul 2000
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yes but you are not undesrtanding that when the TPS reads throttle closed the nissan ecu shuts off the injectors to conserve fuel.
Regardless of waht the MAF is reading.
Nissan ECUs have been doing that since the 8bit days.
Regardless of waht the MAF is reading.
Nissan ECUs have been doing that since the 8bit days.
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Advocate for the People's Republic of Awesome
rest in peace tim.
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rest in peace tim.
lifelong learner
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the time it will run rich is that split second from 100% throttle while the thorttle plate is coming back to shut..
that takes what an instant of a second? that is when the car will run rich.
it spits flames because the air flow metere counts this huge amount of air adds fuel while the thorttle plate is closing and because the throttle plate is closing it sees the air as like 18psi of boost it then retards the timing and the retarded timing along with the slight richness is what pops the flames.
As soon as the TPS reads the throttle as being closed there is no more fuel injected to the motor until the iacv turns on.
next.
that takes what an instant of a second? that is when the car will run rich.
it spits flames because the air flow metere counts this huge amount of air adds fuel while the thorttle plate is closing and because the throttle plate is closing it sees the air as like 18psi of boost it then retards the timing and the retarded timing along with the slight richness is what pops the flames.
As soon as the TPS reads the throttle as being closed there is no more fuel injected to the motor until the iacv turns on.
next.
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Advocate for the People's Republic of Awesome
rest in peace tim.
Advocate for the People's Republic of Awesome
rest in peace tim.
