Someone that is deep in the industry told me that the Japanese tuners rarely ever use blowoff valves. Anybody from japan please comment on this. I got my car the other day and it does not have a blowoff valve yet. but they tell me this is normal in japan. They will install when new parts come in but until then I will be driving like this. I have no problems with dieing or hesitation. it totally sounds different, it sounds like a cho cho train but with a attitude. thanks

 

Compressor surge is fun...

 

IMHO they are not neccessary and are a useless mod for an EVO. I have read numerous times that they cause more problems than good for most EVO owners.

-Nate

 

That choo choo train sound you are talking about is your turbo getting its A s s kicked by compressed air backing up against the compressor wheel.... you are drastically shortening the life of your turbo everyday that you continue to drive your car like that.

 

I agree! Recirc is the way with this car.

-Nate

 

They also like buying soiled women's panties in vending machines...

 

I agree that its killing the turbo. luckily I don't have to worry about that because if the turbo dies they wil replace for free.

 

That would be if the blow-off valve was VTA. I think he means that they told him having absolutely no blow-off valve, not even recirculating stock, is okay. All turbo'd cars need to have a way to vent built up pressure when the throttle plate closes, otherwise the choo choo train will compressor surge the turbo to death. (And yeah, that choo choo is a very bad noise to be hearing).

 

uhhh are u talking warranty wise? well i dunno if they will replace a turbo because YOU decided to modify ur car by taking off something that was there to keep ur turbo safe.

 

yeah my friend has an S13 with an Ca18 in it(previous model similar to sr20 except with iron block) and the motor doesnt come with a stock BOV...he was like BOVs are useless! well...after a few days of hard driving his turbo basically self destructed..the last few days it sounded like ****...

 

This is completely true. They're ****ed up.

 

I know this is off-topic, but im curious...Could you explain a little...

 

I think I'd get banned. I'll PM it to you.

 

but what if the car has a big turbo. have you ever think about pressurized recir air hitting the inlet turbine blades at let's say 20+psi to spin backward???

most of turbo charged cars shown at best motoring (japan) video were equipped with BOV vta.

 

I don't know who you spoke to in Japan but I can't beleive that they would not vent the charge pressure around the compressor.