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any one dumping to the atmosphere???

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XxrusianxX

20+ Year Contributor
114
1
Jan 18, 2003
Brookline, Massachusetts
i keep hearing about people say how if u don't recirculate then the car will run like crap, or even dye on shifts. I can see if you are running like 25psi+ then you would be dumping a crap load of air, and air/fuel ration would spike like crazy so no argument there, but if you are running a near stock boost then i honestly don't think that dumping out has a negative effect. I have been dumping out for a long time and had no negative side affect, only positive. anyone have a different experience or disagree with me???
 
Air is air, no matter how much, you are losing some no matter if you are running 3 psi or 9000. You will be rich between shifts and your gas milage will suck. Please do a search, there are hundreds of threads on this. If you want to dump, please do it correctly
 
My engine is stock except for a K&N FIPK, Blitz SSDD BOV, and Thermal RD cat back. I have been venting with no problems since I installed it, although after reading all that has been said about venting, I am leaning towards getting a BOV that I can recirculate.
 
I tried venting before I started reading about it, and it seemed at the time that it was running just fine to me... Then I re-connected it & couldn't believe I hadn't noticed how crappy it had been running. OMG :talon:
 
i'll give a shot to reconnect mine and see what i get, i don't know if you guys saw a video of a pretty much stock gst on a dyno and it ran like 3-4 hp more when dumping out then when recirculating, so i still have my doubt's
 
XxrusianxX said:
i'll give a shot to reconnect mine and see what i get, i don't know if you guys saw a video of a pretty much stock gst on a dyno and it ran like 3-4 hp more when dumping out then when recirculating, so i still have my doubt's

3-4 hp increase is not attributable to the BOV being dumped... Your power can vary that much pull to pull without changing anything.
 
1990EclipseGSX said:
3-4 hp increase is not attributable to the BOV being dumped... Your power can vary that much pull to pull without changing anything.


That is why you cannot trust "Dyno-proven 4-5 horsepower gains" for any product. Dynos try to be as accurate as possible, but there always 1-6 horsepower differences on any dyno.
 
XxrusianxX said:
i'll give a shot to reconnect mine and see what i get, i don't know if you guys saw a video of a pretty much stock gst on a dyno and it ran like 3-4 hp more when dumping out then when recirculating, so i still have my doubt's



I'm confused how you got the proven member tag and you still ask a question like this.



Dumping metered air into the atmosphere is bad no matter how you look at it. You may not see the effects immediately, but your engine will suffer for this.



The mods should lock this thread.
 
Black95TSIawd said:
the video of the guy didnt vent out his blowoff valve, he cut the dump-pipe out of the stock intake snorkel. Picked up 2hp and 10ftlbs of torque.

no that is not the video i am refuring to, the one i am talking about is removing the return pipe, all i am saying is that i have not seen any proven data to tell me that venting is bad i am not saying it is good or even that it is not bad, i am just not convinced that it's bad. i am speaking from my own experience on my own car, i have run at the track both ways, and i have gotten better numbers while venting, and my car does not stall, sometimes i do get an rpm drop after excesive acceleration and then a sudden release of the gas peadal but very rare and only under extreme conditions. so i still sit here not covinced due to the lack of evidence.... I have not seen a car run poorly due to venting.... other's experience might differ and i would love to hear it...
 
XxrusianxX said:
sometimes i do get an rpm drop after excesive acceleration and then a sudden release of the gas peadal but very rare and only under extreme conditions.

And this is exactly why venting is bad...

Also, I see no possible way of power changing one way or another from dumping or re-routing. The only time it matters is between shifts. There is no difference in the two setups when you are at full boost...
 
XxrusianxX said:
no that is not the video i am refuring to, the one i am talking about is removing the return pipe, all i am saying is that i have not seen any proven data to tell me that venting is bad i am not saying it is good or even that it is not bad, i am just not convinced that it's bad. i am speaking from my own experience on my own car, i have run at the track both ways, and i have gotten better numbers while venting, and my car does not stall, sometimes i do get an rpm drop after excesive acceleration and then a sudden release of the gas peadal but very rare and only under extreme conditions. so i still sit here not covinced due to the lack of evidence.... I have not seen a car run poorly due to venting.... other's experience might differ and i would love to hear it...

The proof is not needed it is just accepted becasue there is no way around it. You are dumping metered air and that is just stupid. If you want to here you BOV and impress ignorant people then at least do it right. Your car may not be running horrible, but it could be runnign better. No matter what you "feel" or how you spin "results" your car is not running the best it could. If you want to do this fine it is your car and your money, however, don't try and justify it to those of who know better or to newbies that don't.
 
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