Why does noone run a BOV with a blower??

UnderPressureGT

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Sep 18, 2004

#1

• Sep 18, 2004

• #1

I bought a supercharger kit used over the summer that came with a Greddy Blow off valve. Sounds REAL good being vented to the atmosphere when the thing blows off. Everytime i downshift to about 3K rpm, it sounds like a REALLLLLLY loud turbocharged car and everyone in the world in the streets stare at ya and drop their jaws! My question is. Why do people run bypass valves and run them back into the inlet rather then running an open blow off valve?

Someone said that it F's with the mass air reading but i dont see how thats true being that the air is being let out UPSTREAM the mass air meter sooo the air being let out is already metered. I think one person on here runs an HKS blowoff valve with mass air and said that he didnt notice anything wrong with his meter or anything?

thanks, just curious

joe

 

TT91

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May 23, 2003

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Sep 18, 2004

#2

• Sep 18, 2004

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OK here we go, one last time...You meter reads xx amount cfm of air per .000 sec...per say... so it compensates and adds xx amount of fuel for that given RPM to match the air intake...Now if you have that fuel going into your combustion camber, but LESS to NO air becuase for that split second, you just vernted it completely out of your intake tract into the atmosphere...and your motor goes extremely RICH for just .001 of a second. Does it hurt the motor...maybe not, but it does rob power, because your not getting optimum combustion. Make sense........

If you want to vent your BOV into the atmosphere properly, you need a BLOWTHROUGH mass air meter..

 

mr_woodster

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#3

• Sep 18, 2004

• #3

air that has passed through the MAF is meter'd air...when that disapears, the ecu doesnt know where it went...hence the possible trouble. Then Ecu see's the air comming in, and the air going out...if its lost somewhere between, usualy it cant cope.

 

UnderPressureGT

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soo answer this... To convert my car to mass air (SD now).. i would need a harness, computer, and a BLOWTHROUGH mass air meter for it to run right??? i dont have to deal with that mass air BS now since i am SD.. soo im asking for future reference

 

slvr302

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#5

• Sep 18, 2004

• #5

FiVeLiTeR87GT said:

soo answer this... To convert my car to mass air (SD now).. i would need a harness, computer, and a BLOWTHROUGH mass air meter for it to run right??? i dont have to deal with that mass air BS now since i am SD.. soo im asking for future reference

Click to expand...

You still use a draw thru MAF

 

TT91

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#6

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slvr302 said:

You still use a draw thru MAF

Click to expand...

He wants to vent it to the atmostphere cuz he is a ricer, so yes, youll need a blowthrough maf upstream of your blower.

 

UnderPressureGT

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sirsureshot39 said:

He wants to vent it to the atmostphere cuz he is a ricer, so yes, youll need a blowthrough maf upstream of your blower.

Click to expand...

yahh real funny prick

 

TT91

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#8

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Goodnight...time for bed.

 

slvr302

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sirsureshot39 said:

He wants to vent it to the atmostphere cuz he is a ricer, so yes, youll need a blowthrough maf upstream of your blower.

Click to expand...

I was under the impression he was speaking of the type of MAF used when setting up a Vortech the way it was intended.

 

UnderPressureGT

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Looks like Im staying speed density for a while then seeing that the crower 15511 makes power from 1500-6500 and so does the track heat intake which i already have now thanks

 

flying high

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#11

• Sep 18, 2004

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sirsureshot39 said:

He wants to vent it to the atmostphere cuz he is a ricer, so yes, youll need a blowthrough maf upstream of your blower.

Click to expand...

thats what i was thinking.

 

RydeOn

Licensed to Chill

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#12

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Ive been there done that blow off valve thing and this was way before it was the kool thing to do and Im over it. Now Im going a new direction with this car. No ricey ughh sorry racey stuff for me. When I smoke someone my car sounds like an all motor car. My blower is so quiet and of course there is dead silence when I shift. I love it. Ill spend my money on performance and making my car faster. Im not worried about that gimecky stuff.

 

IndyBlk5.0

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#13

• Sep 18, 2004

• #13

ahhh give him a break, if he wants to run a bov, let him do it, its his choice. He just asked a simple question. Mike answered it for him

 

UnderPressureGT

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#14

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honestly how do you think a BOV is rice?? because its loud???

thats like saying an S trim blower is too ricey because it makes alot of noise and a quiet blower is not rice.. Just because i want a loud blowoff/bypass valve makes it rice?? give me a damn break

 

TT91

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#15

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Neons, turbo wing, 5 inch cowl, two tone paint, slicks and skinnies, under pressure banner....all backed up by a bone stock 302 with 5psi...you want the BOV cuz it sounds badass.....it sounds like you have something underneath that 5inch cowl hood besides hot air..... ....Ricer mentality

 

UnderPressureGT

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sirsureshot39 said:

Neons, turbo wing, 5 inch cowl, two tone paint, slicks and skinnies, under pressure banner....all backed up by a bone stock 302 with 5psi...you want the BOV cuz it sounds badass.....it sounds like you have something underneath that 5inch cowl hood besides hot air..... ....Ricer mentality

Click to expand...

ok lets see ya prick.... no mroe neons anymore.. 1 tube blew out.... after hearing it from the wholllle forum, i am buying a cobra wing ASAP, two tone opaint has NOTHING to do with rice.. slicks and skinnies are being traded for edelbrock heads, under pressure.. i like it... stock motor.. hell mike if you wanna buy me a new motor, then feel free!! If my car can pull a high 12 on 8 pounds, then i wouldnt call my car rice!

 

TT91

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Sep 19, 2004

#17

• Sep 19, 2004

• #17

all fantasy, no function

 

M

mackey

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Sep 19, 2004

#18

• Sep 19, 2004

• #18

Your car pulls high 12s?

 

795.0pacecar

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#19

• Sep 19, 2004

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I think his car is pretty cool, the only thing I dont like is the wing which he is in the process of fixing anyway.

 

TT91

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#20

• Sep 19, 2004

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mackey said:

Your car pulls high 12s?

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I wouldnt really call that pulling..more like struggling. LoL, Joe and I are good friends, dont take any of this serious. But in all seriousness..hes a ricer..