basically: every time you shift under boost, the bov opens. if it vents to the atmosphere, it is letting air out that the computer has already measured. so instead of being say 12:1 air:fuel, it loses air, so it hits 10:1 air:fuel. not really a problem, it just causes carbon buildup, and sometimes may lead to stalling. only problem i ever had was if i was boosting, then put the clutch in, if i didnt rev the engine a bit, it would sometimes stall. give it a quick tap on the gas, and problem solved. i also tightend thespring on my bov, which cured it for me.

edit: so much for that writeup, you already understand lol

about choosing BOVs, its more personal preference. HKS, Blitz, and Greddy all make quality product. each one sounds different, and has different advantages. i chose the HKS SSBOV after hearing it on Blakes celica (GT-Four on RS).

that will not cause carbon build up dude whe you run really rich you umm what the word i am looking for dame it kinda like crotion or some thign dame what the fucken word oh well i forgot

carbon is cause by mostl iky oil or other for stuff like coolent

in odder for you to gain alot of carbon from runing rich you have to be runing rich all the time

i have all ways liekd the greddy bov my sefl but they tend to leak some what same wiht allt he piston one's

the only bulit pruff one made is hks ssq it can not leak ever


but i fi was to go for nice it whould be the turbo xs rfl i herd it befor sounds killer

actually, unburnt gas causes carbon buildup, but thanks for comin out.

:)

ok let me put into terms that is very easy to say in dore to gain that much carbon build upy ou have to be runing a very low octain gas in oder for it to build up lie that

but inoder for it build up as in gas soot it will have to very i mean very rich as in the point where you are pushing black and still then it get very hot in the comtion caber that it will just burn off

remmber high the octian the oil is in the gas and that is what caus ecarbon build up

take test take gas lay in ont he ground and burn it thenafter it all bunrt and left black spot take troch tot eh blakc crap and ti will just burn off there nto eghough oil in the gas in oder for it gum up

your wrong and i mock your religion and/or way of life.

lol now now guys, no need to get fiesty. I would just run my stock valve but i was told its on its way out so im not so sure i want to run it for long... maybe i should replace it with the HKS SSQ BOV and route it back so it runs back thru the AFM ? I guess it defeats the purpose of a BOV but i guess it would still at least make for a good stock bypass valve replacement??

if you are doing that just use a bosh bov in less you have goals of big boost caus eposhe bov will hold 15 psi fine and there 60 bucks and have cool nise as well kinda like a blitz bov

but rooting it back in is bore you want peoepl to hear your 600 buck bov and yes there not cheep in lesss you buy used

mock all you want but i am right and say it one more time in oder for you to get alot of carbon build up you have run lowe octain gas or run really really really rich and the bov thingy will not do this

a broken afm will or if you blow an ic pipe


in all cause carbon is cause by oil and yor ring not seating right or you fill your car wiht to much oil or use really crappy oil adivies

Well lets put it this way then, if anybody ever hears of a decent used BOV come up for sale that will work for my supra lemme know.... otherwise for now i will either keep my stock one or buy a bosch one? not sure yet...

Oh ya a couple other things too, i was gonna ask where abouts in saanichton do you live enraged?? I live in saanichton as well. And i also emailed that Mike guy about the wiring harness and he said he has them but wont sell them? i dunno why he wont sell them but thats ok, i will just find my own i guess

HAHA i hear ya on the EASY BOYS... but its funny they way these too can go at it... both have prides too BIG haha... any who Im Julie Nash Mans other :) I live in saanichton too ... where abouts are you ????

Hey! nice to meet you :), my gf (ness_71) and i live out by the central saanich police station. Its right off of Mt.Newton x-road. Where abouts do you live?

yae but cheack to see if your stock one is blown if it is replace asap or you are surging your turbo and that is bad you are lossing boost and frocing unmeter air into your car bad bad

bad

easy way to cheak is take the stocker off and see if you can blow throw it at all drition if one way is block and cant then you bov is fine

Oh ok, i will make sure to check that out before i get the car on the road :) thanks.

just get the bosch bov unless you plan un running 15+ lbs boost in anytime in the near future.... all the other BOV's run more than 3x the value of a used bosch which can be found somewhat easily on forums...

altho the HKS SSBOV sounds best in my opinion.. if you're only planning on running stock boost there isnt much need for it. but it is progressive, so if you decide to turn up the boost down the road it will hold fine there, too.. ive run over 20psi on mine and it sounds crazy loud letting out all that air :lol

owell check supraforums.com for sale section, maybe you can find something used and cheap

Well i plan on playing around with shimming the wastegate lots, right now its shimmed as is but im not sure what the kid has it set to run at. I think around 15psi right now? I will have to check with him before i buy it. But he did warn me already that the stock bypass valve is on its way out. Im not sure what he means by that exactly but ya. I will check to see if its ok still otherwise i will probably just end up buying an HKS BOV that you guys all talk about because it sounds like the way to go. I wont be running stock boost for long i can tell you that now lol...

who on revscene has the brown or burgandy mk3 turbo that went to alberny for the trip with us last summer. i cant remember who it was

toby maybe?

Slate, if you're shimmed, you'd be running probably around 10-12psi, fuel cut is at 12..... and i wouldnt attempt to go much higher til you've re-done the headgasket and bolts, as you've probably heard its the fatal flaw of the mk3, and high boost can blow a 12+ year old headgasket in no time

in order to get it above 12psi you'll need fuel upgrades, injectors, AFM housing, etc

Haha mine is brown, but its not the same car that your talking about.

that was me at port alberni... didnt drag though, was fun camping and gettin loaded every night haha

i live on veyaness... work (unless i get canned) at keating pizza a few times per week.

ahh cool, its was bugging me for like days trying to remember. good times

thought it was a red maroon kinda colour with a loud blow off. that was sweet

yeah thats enraged dood