Bypass or not?
Bypass or not?
Are there any risks to not running a bypass? My charger which I should have finished this month currently won't have a bypass but will be switchable as I'll be wiring in a switch for the clutch so to be safer I can just turn it off if required.
reganlives
27-07-2021, 11:59 PM #1I've noticed recently that there's been quite a lot of discussions about the use of bypass valves on home made supercharger kits. Is the use of a bypass a real requirement or is having a BOV ok?
Are there any risks to not running a bypass? My charger which I should have finished this month currently won't have a bypass but will be switchable as I'll be wiring in a switch for the clutch so to be safer I can just turn it off if required.
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Yes a bypass is required and alot cheaper then a bov speak to anyone who has the kit and they will say the same a bov isnt designed to run a charger kit
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If ur concerned about fuel then dont fit the kit, i got very high praise for my kit at JAE and the bypass works like a dream
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I dont get why people are fitting a switch u either want boost or not.
If ur concerned about fuel then dont fit the kit, i got very high praise for my kit at JAE and the bypass works like a dream
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In theory...for the time being it would work I guess or would I need an adjustable one?
As for the switch...each to their own I suppose. Fuel isn't really a concern of mine in all honesty as the Lexus isn't my daily anymore.
reganlives
28-07-2021, 02:01 AM #4That's understandable but my kit currently isn't set up for a bypass so I'd need to change pipework etc to implement it. On the other hand, when I got the kit, even though I've changed bits, it came with a bov but none adjustable. Instead of going straight to stage 2 and a 145mm pulley though, due to funds I'm just going to use a 130mm pulley.
In theory...for the time being it would work I guess or would I need an adjustable one?
As for the switch...each to their own I suppose. Fuel isn't really a concern of mine in all honesty as the Lexus isn't my daily anymore.
yes it will work but wont produce anything near what it should and it will struggle and just make noise.
ive spent along time working on these and never seen one that works right with just a bov never.
if you want to try thats fine but u asked the question and im giving you the answer that no a bov isnt enough and wont work right with a charger kit a turbo Yes a charger No.
to this day no one has taken the bypass of there standard kit and replaced it with just a bov.
and those who run just a bov are finding out very fast it dont work and are fitting a bypass
yeah fair one but its so much easier wiring it to a feed then adding in a switch.
yes it will work but wont produce anything near what it should and it will struggle and just make noise.
ive spent along time working on these and never seen one that works right with just a bov never.
if you want to try thats fine but u asked the question and im giving you the answer that no a bov isnt enough and wont work right with a charger kit a turbo Yes a charger No.
to this day no one has taken the bypass of there standard kit and replaced it with just a bov.
and those who run just a bov are finding out very fast it dont work and are fitting a bypass
When you say it wont produce anything near what it should what do you mean? Why's that?
What problems have people seen with just a bov? From what I've read a lot of problems are caused by the location of the bov. If the bov is located further away from the maf sensor then this reduces the risk of any hesitation or over fuelling.
I'll report back how it is but if it isn't good then you can all give me a big "I told you so!"
Also...for further information, the wiki article for bov's is where I found the info on maf sensors and does make very good sense.
http://en.wikipedia.org/wiki/Blowoff_valve
reganlives
28-07-2021, 02:27 AM #6I'm not really bothered about the noise in all honestly and down the line I will probably be changing some of the piping so I'll see how it goes I think.
When you say it wont produce anything near what it should what do you mean? Why's that?
What problems have people seen with just a bov? From what I've read a lot of problems are caused by the location of the bov. If the bov is located further away from the maf sensor then this reduces the risk of any hesitation or over fuelling.
I'll report back how it is but if it isn't good then you can all give me a big "I told you so!"
Also...for further information, the wiki article for bov's is where I found the info on maf sensors and does make very good sense.
http://en.wikipedia.org/wiki/Blowoff_valve
Even xtremist who fitted a bov is now fitting a bypass due to issues.
As said mate go a head but a ssqv is 100 and my bypass was 40 taken from a supercharged car so if main dealers use them with chargers think it makes sense to ne to use one with my kit
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They just never have released the right amount under load as the charger works differently from a turbo.
Even xtremist who fitted a bov is now fitting a bypass due to issues.
As said mate go a head but a ssqv is 100 and my bypass was 40 taken from a supercharged car so if main dealers use them with chargers think it makes sense to ne to use one with my kit
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Dark Samurai
28-07-2021, 10:07 AM #10When your car is idling the bypass needs to be open so there is uncompressed air flowing into the engine, the more compressed the air is on idle the more problems as it'll be hitting a shut throttle butterfly and doing nothing, that's why you want it uncompressed so it has to flow through the bypass. A bov isn't open at idle so nowhere for the compressed gases to escape to if there's no bypass
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