hey, i just got my STi, now im really debatings wiether to buy a BOV or not, need some serious advice.... from what i hear they are just a novelty item for noise, and others say they improve throttle respose in some ways

 

novelty item for noise

 

all these add-ons are neat and make the car sound kool-the sti has so much perfomance from factory that the average driving doesnt no what they have in the car or how to unleash it.the money would be better spent in driving lessons from a professional driver.

 

you're better off buying an up-pipe and/or down-pipe. but the bov, especially the GFB hybrid, sound sooo good when you're smokin some poor schmuck in a Porsche Boxter (poor mans porsche)

 

the bov an item for noise? u guys serious??? well in ur case u dont really need one if ur car is bone stock, but the bov is not for noise if u get a turboback system and more hp gain because u will need to balance out the pressure of ur turbo. and u need a blow off vavle for that. itll keep ur turbo lasting longer and in good shape,

its not for noise, the noise is 2nd, the reason it has that noise is because of the pressure being released and u need a more effective pressure releaser(BOV) if u get more hp on ur car. such as adding a turboback.

STi and WRX come with stock Blow off vavles, but like anything else, when u gain hp u need to balance things.

 

remember, if u gain more hp and u dont release that pressure efficiently, itll kill ur turbo sooner.

 

downshift-you're wrong again.

Any aftermarket BOV will NOT improve performance or turbo longevity. In fact, most, if not all, aftermarket BOVs will more likely cause a reduction in performance by screwing up the A/F ratio. If you have a big aftermarket turbo, you may require an aftermarket BOV, but only if you're pushing alot of air. The stock BOV is THE BEST for the stock turbo, bar none. Aftermarket BOVs are FOR NOISE. Any idiot who does a search or actually pays attention to the posts on i-club will tell you this.

 

The only BOV that won't screw up the A/F ratio is the GFB 50/50 at least this is what i hear. But yes I agree it is for noise only til you start modding that piece.

 

bone324, whats wrong with you? are u stupid or something, im not wrong at all, actually your wrong. i said:

"well in ur case u dont really need one if ur car is bone stock, but the bov is not for noise if u get a turboback system and more hp gain because u will need to balance out the pressure of ur turbo."

"u need a more effective pressure releaser(BOV) if u get more hp on ur car."

SOPHISTICATED ENGLISH: i bascically said and meant that stock turbo is better with stock BOV. and with more hp gains(meaning upgraded pipiping or turbo), means you need a aftermarket BOV such as an HKS BOV to balance out the power efficiently which means helping the aftermarket turbo last longer by giving it an aftermarket BOV. is that too hard for you to understand??

ENGLISH --------> better to have aftermarket BOV if u have more hp meaning mods on your wrx. YES stock BOV is best for stock turbo. any idiot should be able to read english.

 

oh yea, bottom line: aftermarket BOV's WILL improve aftermarket turbo longevity.

 

A turboback, uppipe, upgraded intercooler, upgraded IC hoses, MBC set at 16 psi, reflashed ECU or UTEC, or any other mods that will increase horsepower without replacing the stock turbo WILL NOT produce any more power or improve turbo spool up time/turbo longevity with any aftermarket BOV. downshift also recommends launching your brand new WRX at 3500 rpms at every stoplight to "break it in".

 

I recommend launching a wrx at 3500 at every stop? yes thats really brilliant isnt it.

"A turboback, uppipe, upgraded intercooler, upgraded IC hoses, MBC set at 16 psi, reflashed ECU or UTEC, or any other mods that will increase horsepower without replacing the stock turbo WILL NOT produce any more power or improve turbo spool up time/turbo longevity with any aftermarket BOV."

first of all with all those mods on a stock turbo, will significantly descrease the life span of the stock turbo. second of all uppipe and turboback WILL improve turbo spool up on the stock turbo. and last of all, no duh the BOV wont improve hp, did i say improve hp with a BOV??? no i didnt. i said its a more efficient pressure releaser and the stock turbo which is attached to the new piping meaning new power shoud have a new BOV to balance things out.

are you sure you know what you are saying? all that will icrease hp and torque, by a lot, what is the factor causing the increase of hp and torque? its the stock turbo now with mods. meaning its better to have an aftermarket BOV. those mods EFFECT the stock turbo. getting uppipe turboback will make the stock turbo produce more force. getting ecu and making more boost will EFFECT stock turbo.

hope u can understand my typing.