NEED HELP BIG TIME
 

the person i got car from blocked off recirculation tube is that bad?? the car feel as if tht the exhaust is blocked or something it has no power and will bearly go anywhere any ideas??

lololollol!!!! hey man if u really worried dont worry it means your vta with your blow off valve no big deal.

explain alil more

dude your venting to atmosphere it will make you run rich between shift and pop noise at the tail pipe. it actually helps with performance cause your getting cold air vs recirculated air... im hangen out if your still confused i'll help you out tommorow...

yeah i still am. cause my car feels like its getting no power it bearly goes at all. do u know how to fix that??

ill check it out tomorrow and try to help you.

I dont think hes running VTA, and since when is VTA a performance increase? he said it runs like shit and has no power. whats wrong with you?

how is it "blocked off"? is it the factory BPV?

You may get that if you unplugged the rec uric tube and didn't plug it back into the bpv.

He said his recuric tube is plugged. Some have the opinion that vta helps with power cause your getting straight cold air instead of with a shot of hotter recuric air. This is an opinion and could be proved with data logs.

the only time its recirculating this "hotter" air is when you are letting off the throttle, and that means you dont need cool air. you are are either shifting or slowing down, so please explain to me how VTA gives more performance.

Well I read that it does for the reason I gave, maybe you are correct.

running vta is bad period - you should hook up things the way they come stock
recirculating bypassed air back to your turbo is not only beneficial for the life of you turbo, but it keeps air moving into the intake when while fuel is being supplied by your stock ecu map (i assume that hasn't been changed) - yes this makes you richer (which is not always good) because if you don't have any more spark or fuel to match your increased fuel you don't make any more power
if you just go unplugging the line with out resetting the ecu it will stumble and fall on it's face
btw - how is it a shot of hot air when the air the gets recirculated goes thru the turbo and right into the intercooler (making it cold) and into the intake????
running vta (without tuning) just shortens the life of your turbo and the life of your engine

all the people i know who've run with a blocked off stock valve have switched back because it made the car run like a dog. the reason for this is that the stock valve lets through some air into the recirc hose at partial throttle. you block it off and blow the air out to atmosphere, and it messes up the entire AFR calculations.

take away: don't try to be cute and try to vent a BPV to atmosphere...it's a stupid rice idea that just messes up a system that was specifically designed to recirc the air back into the intake...

But it only screws afrs when you switch gears once your on the throttle there is no effect. It makes the car a little more "surgy" but big deal. I kinda like it.

you're washing the cylinders down with fuel - it's not good

so you're working on the assumption that no air leaks out of the stock bpv at wot then?

Well wich would be hotter? a pot with 100% room temp water or a pot with 75% room temp water and 25% water that is 20 degrees hotter than room temp?

I run and rfl currently and have ran vta most of my 64,000 miles no worries. Car uses no oil.

no, it still messes with you when you get on it. you're messing up the LTFTs that the car uses under normal circumstances as well. the car is "surgy" because it's bouncing its AFRs all over the place because none of its calculated fuel injection amounts are coming back with a measured AFR that makes any sense...this is NOT a good idea...

Hey you could be correct not tryen to get in a debate lol. Let me ask you this, when I tune my car and I have gotten a nice smooth 12.0-12.5 AFR wouldn't this be in indication that vta is not affecting my afrs under wot?

are you using a forge BPV? are you talking about WOT AFRs? have you logged yourself at partial throttle? if you've had your car tuned to run VTA, then it's probably running as well as it could under the circumstances, but i highly doubt you can tune the car to run better than a recirc'd valve, because that's just not how the air/fuel systems in the car work.

also, it's kind off irrelevant how well your car runs after it's been tuned for this, since the OP's car is obviously falling over itself and running like crap: time to take the BPV back to recirc before we have another thread of faaaale...

Ofcourse I monitor part throttle afrs and yes u run rich between shifts vta. Are you avoiding the question? lol j/k I have used the same tune with my rfl and forge both with straight flat afr lines. The only "tune" I ever did for vta was pull fuel down low at part throttle.

I bet the OP took the plug out of the recuric line and that why car is no power... LIke I said VTA is a matter of opinion I think it has 0 effect on the car (except colder boost temps) under wot. Yeah you run a little richer between shifts but big deal.

if you can read..............he said he bought the car like this

unblock it and reset the ecu and see how it runs..Put the stock BPV back on it if you have it..

If you can think.......... he probably was tooling around with it and pulled it out. If he bought it like that he wouldn't have been able to dirve it down the street.

joe i've been reading your posts about tuning and boost levels for quite some time now -
all i can say is, your time is coming - when was the last time you did a compression test?

Ohh Snap! I run vta and tune with 0 knock and I gonna blow according to cpolly:scared: your a genuis!! I should heed your smartness lol.

Im at 64,000 miles I dont know what my compression is. compression may not be perfect but the engine uses no oil at all.

you make no fucking sense....now, not only can you not read, but you are making stories up about what he did or didnt do with the car.

i give up.

You make no fucking sense saying he bought the car and plausibly drove around with the reucic tube unplugged. I merely said he might have done that after the fact , speculation he isnt around to confirm or non-confim. Sorry if that bothers you lol.

yes, i absolutely know he's running rich between shifts, and i never doubted that he did. you need to clarify which valve you're running VTA with: RFL? forge? was the forge the BOV version, or the BPV version? the reason why i ask is that the RFL and the BOV version of the forge are built differently than a valve that's made specifically to be a BPV.

presumably, the OP has a stock BPV that is running with a blocked off recirc hose that forces it to VTA. this is NOT the same as simply running a valve that was built to have the option of VTA!

to summarize:

1. valve built to handle VTA (RFL, HKS, etc.) will work well enough on the car, but will be rich between shifts...not ideal, but plenty of people deal with the backfires...the reason for this: these valves do NOT allow air to pass through the valve at idle/very light throttle!

2. valve NOT built to handle VTA (forge BPV, stock BPV) will make your car run like SHIT if you try to block off the recirc. these valves allow air to recirc (pass through the valve) at idle/very light throttle...since this is going to get leaked out to atmosphere, your idle will feel like shit and so will half the other time you drive your car around...


EDIT: if you still don't believe me, try this: use your stock BPV and block off the recirc hole in the inlet after disconnecting the recirc hose...see how much fale ensues...

I wasn't thinking of trying to vta on a recuric valve maybe this would make it run like shit I don't know. Good point.

For sheets & giggles when I get my car back form shop with new clutch I will tweak my tune and perform back to back logs with the forge bpv and the turbo xs rfl vta. Will log boost temps and afrs and post side by side results.

the forge bpv may not recirc as much as the stocker during idle/very light throttle. i have not tried it yet, so i don't know 100% exactly what would happen, but if you want to see how much of a disaster this whole situation can be, try the blocked off recirc hole with a stock bpv...it makes for a lot of lolz...:D

EDIT: i am not responsible for any fale threads if you try to run the stocker in blocked off VTA...as i mentioned, it's a BAD idea, and isn't something you want to do if you know what's good for you!

lol at this.

I have run the HKS VTA for probably the last 12k miles and its fine. I backfire on occasion but other than that car runs great... superskaterxes road in my car with 3 passengers and a trunk full of gifts (he knows how well the car pulls now)... only thing it may shorten the life of is your fucking plugs.. and fuck that k04 i hope it dies. muahha :P

ok thanks for the help and all the debating lol ill try some of the ideas

what ideas? we all want to know exactly what you have on your car and what has been done. You answered no questions. This is what lead to the all the debating. The problem isnt whether or not your running VTA. vta will not make your car run like a dog. elaborate on the problem you have and we can help you.

the car like boggs down and will bearly move for a stop. theres alot of exhaust crackle. it doesnt stay running when i start it

how about the above questions? we already undertsand it doesnt run right.

unless i'm completely crazy, i bet this means stock bpv forced to VTA with a blocked off recirc...the engine is flooding itself to death with fuel because even max out negative LTFTs and STFTs can't account for the massive skew...

if you can't describe your bpv setup why not take some pictures and post them up so we can have a look.

you came in asking for help but don't want to answer any follow up questions for some reason...

...PS why did you buy a car that barely moves from a stop?

the bov is a turbo sx one. it is blocked by haveing a plug in the end of the tube the end of the tube where it would hook up to the bpv recir part and on this bov there is no place for a recir tube to hook upto it

you're going to have to post up a pic, because this must not be a turboxs hybrid like i've seen on other people's cars. i know turboxs makes 100% VTA bovs, but i've never seen anyone with one that had been flanged for our cars.

put up a pic

it came with a flang kit i had to pay extra for it

VTA is not "bad" or harmful in any way, as long as the car is tuned for it. Just like any other mod, the further away you get from stock the more things will vary. There are a few now who are actually finding that, with the right tuning, these cars are running BETTER and more responsive with VTA than under recirc, but I'll let them tell their own story when they're ready.