hi i was just wondering if bov are legal cuz i heard that they are not legal?I almost have enough money for a 7mgte engine and tranny swap so i was curious, and if they are legal which ones are prefered over others, and do u guys have any links so i can actually read and hear the bovs? thank you.
are bov legal???
- Thread starter toofast4urass
- Start date
Not illegal so long as you pass emissions. BOV on a car that runs MAF setup will run rich between shifts and could affect your emission rating.
Hit up the approved vendors section, or the part review section. http://www.supramania.com/forums/forumdisplay.php?f=33
Hit up the approved vendors section, or the part review section. http://www.supramania.com/forums/forumdisplay.php?f=33
Well, the GReddy RS says that it is not approved for use in California except when used in off-road vehicles. However, I know that intercooler upgrades are legal for cars that have turbochargers from the factory. So, I'm not really sure.
rs4rush said:
Why beacue it will stumble? nah. as long as it is not vented and recirculated it will be fine. I think that might actually let you pass too smog too. But don't take my word for it.
BorHor said:
Mine not recirculated and i never stall. I think its time for you guys to stop saying that vented bov cause 7ms to stall.
Yes, chris did adjust it, but regarless, you should stop telling people false info, and learn that its not the BOV that makes the car stall.
Umm, yes they do because I have tried several different ones, and they all have. A few of them you can tune the stumble to a minimum, but then you have to deal with a little compressor surge, others there is no hope of tuning it out. You sir, need to quit giving out false info.
Dirgle said:
I think we need to get an expert in here. A properly tuned bov and car, with NOT stall or even stumble. My car has never stumbled, even after hard boost pulls.
Has any private owner been fined by the EPA, I don't know, but here is the rule....
Definition of "Tampering"
Tampering is removing or making inoperable any system or device used to control emissions from a motor vehicle engine. The motor vehicle is defined as any self-propelled vehicle designed for transporting persons or property on a street or highway. The only exception to the tampering rule is the need to install a new certified emission control system or device that is equally effective in reducing vehicle emissions.
Tampering may include, but is not limited to:
* Removing the catalytic converter, air pump, and exhaust gas recirculation (EGR) valve, or doing anything to keep them from working properly, such as disconnecting vacuum lines and electrical or mechanical parts of the pollution control system.
* Adjusting any element of a car or truck's emission control design so that it no longer meets the manufacturer's specifications.
* Installing a replacement part that is not the same in design and function as the part that was originally on the vehicle.
* Adding a part that was not originally certified on the car, such as installing a turbocharger.
The U.S. Environmental Protection Agency's (EPA) anti-tampering enforcement policy is covered under the provisions of Mobile Source Enforcement Memorandum No. 1AExit TNRCC site. This policy states that the EPA will not consider any modification to a certified configuration to be a violation of federal law if there is a reasonable basis that emissions are not adversely affected. A certified configuration is an engine or engine-chassis design that has been certified or approved by the EPA to meet certain emission standards prior to the production of vehicles with that specific design. Evidence of federally approved testing must be available upon request.
Definition of "Tampering"
Tampering is removing or making inoperable any system or device used to control emissions from a motor vehicle engine. The motor vehicle is defined as any self-propelled vehicle designed for transporting persons or property on a street or highway. The only exception to the tampering rule is the need to install a new certified emission control system or device that is equally effective in reducing vehicle emissions.
Tampering may include, but is not limited to:
* Removing the catalytic converter, air pump, and exhaust gas recirculation (EGR) valve, or doing anything to keep them from working properly, such as disconnecting vacuum lines and electrical or mechanical parts of the pollution control system.
* Adjusting any element of a car or truck's emission control design so that it no longer meets the manufacturer's specifications.
* Installing a replacement part that is not the same in design and function as the part that was originally on the vehicle.
* Adding a part that was not originally certified on the car, such as installing a turbocharger.
The U.S. Environmental Protection Agency's (EPA) anti-tampering enforcement policy is covered under the provisions of Mobile Source Enforcement Memorandum No. 1AExit TNRCC site. This policy states that the EPA will not consider any modification to a certified configuration to be a violation of federal law if there is a reasonable basis that emissions are not adversely affected. A certified configuration is an engine or engine-chassis design that has been certified or approved by the EPA to meet certain emission standards prior to the production of vehicles with that specific design. Evidence of federally approved testing must be available upon request.
I think we all know the effects of venting metered air to atmosphere...Really.
Just because one car doesn't stall doesn't mean facts go away. My 7M never stalled with a atmospherically vented BOV but many cars DO have issues with it, in which recirc'ing will take care of the issue. As it should.
Just because one car doesn't stall doesn't mean facts go away. My 7M never stalled with a atmospherically vented BOV but many cars DO have issues with it, in which recirc'ing will take care of the issue. As it should.
then they usually have other problems IMHO...
anyways, back to the subject
"Installing a replacement part that is not the same in design and function as the part that was originally on the vehicle."
It could be argued that they both do the same thing, and are the same design. As long as it's recirculated like stock it's legal it appears...
anyways, back to the subject
"Installing a replacement part that is not the same in design and function as the part that was originally on the vehicle."
It could be argued that they both do the same thing, and are the same design. As long as it's recirculated like stock it's legal it appears...
well i looked around and decided on the HKS SSQV bov. it sounds the best to me and the reviews on the products are all high marks. thanks for input to all that helped. my supra is a work in progress but with that 7mgte engine i'm gonna get i'll be ready for the mods. I love supras.