Newbie/General ForumBeginner/basic questions and general EVO discussion. Specific questions should be asked in a focused forum below. This area is for the newbies.
I agree I got rid of my Greddy type-s that I was recirculating for a Evo IX BOV. I couldn't be happier. It works perfect and never gives me any problems!
Can you really tell that big of a difference between the blow offs (SSQV and JDM MR DV) as far as performance or acceleration? I'm thinking of switching it out because everyone I've spoke with here seems to hate the HKS.
Under acceleration, there is no downside to the HKS. Its problems occur between shifts (rich condition), at idle, and when negatively accelerating to a stop with the clutch in (low vaccuum). Sometimes, the idle symptoms don't surface, but the rich condition between shifts is unavoidable. There is absolutely no reason to use that HKS on an Evo still using the MAF.
I also have the HKS electronic idle stablizer installed. I know it effects my RPMs when I'm braking because it's keeping the car from dying out. With the EIS and recirculation kit, Is it still not a good choice?
It's even worse of a choice, because that's just more money spent to fool the ECU only for the purpose of helping the idle. It should raise a huge red flag when a company makes an extra part that you have to buy JUST TO MAKE THE FIRST PART WORK!! It's such a racket, but HKS doesn't care, because people STILL buy that stuff. I understand if your car already had it on there when you bought it, but I'd be looking to sell it all for a good chunk of change and get a used $50 JDM MR DV, then use the cash towards cams and a tune.
Bummer... well I should probably get that switched out cause I don't want the EIS getting in the way of my flash/tune. I bought the car brand new and the only reason I chose that BOV is because I thought HKS was one of the best companies around so I figured thier blow offs were just as good. My buddy is looking for a blow off to buy and I was thinking of selling him mine to get the JDM MR DV. Only thing is he has a 97 Talon Tsi (4G63), is this not a good choice for him either? I don't want to sell him something thats bad for his car.
It should only be used on a car that uses speed density (MAP) instead of a MAF.
Yes, HKS is one of the biggest NAMES, but that doesn't mean their Evo products are good. Luckily, their cams do work well, but they are $100 more per set than other cams that make the same power.
I don't think he's running speed density because the car is bone stock. So probley not good for him either. Err, I really hate to undo so much thats been done. Is it that important? Where can I find a new JDM MR DV?
From several shops like NoLimitMotorsports, or you can just get a used one from someone for even less. The stock IX DV is the same as the JDM MR DV, so if you find any misguided IX owner who has "upgraded," then you can probably get theirs cheaply.
You're not undoing much. A BOV takes mere minutes to replace.
Yes, it IS important. People sure do seem to hang onto those things for dear life, man, I tell ya...
Let's put it this way. I have come across evos with the SSQV that stalled mid-corner when the driver shifted. Now, that was at 80 mph, total loss of power assisted steering, and if it wasn't for my friend's quick reflexes to restart the car, he would have been part of a concrete wall.
Now, for an SSQV, is that worth it? What if you were going quickly around a bend and you shifted, and the engine cut out, would you want to risk hitting a wall, or heaven forbid, pedestrians or other road users?
All it takes is one occurrence to really ruin your day.
Yes, some people run SSQVs without problems. In fact, it is said that the JDM Evo IX does not suffer this fate due to the operation of a MAP sensor in addition to the MAF sensor. The Evo VIII, on the other hands, runs off a MAF sensor exclusively, unless a 3 bar MAP sensor has been added with the benefit of a standalone ECU such as an APEX'i PowerFC D-Jetro or a motec ECU.
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: Mostly stock MY05 Evo VIII MR RS :
Let's put it this way. I have come across evos with the SSQV that stalled mid-corner when the driver shifted. Now, that was at 80 mph, total loss of power assisted steering, and if it wasn't for my friend's quick reflexes to restart the car, he would have been part of a concrete wall.
Now, for an SSQV, is that worth it? What if you were going quickly around a bend and you shifted, and the engine cut out, would you want to risk hitting a wall, or heaven forbid, pedestrians or other road users?
All it takes is one occurrence to really ruin your day.
Yes, some people run SSQVs without problems. In fact, it is said that the JDM Evo IX does not suffer this fate due to the operation of a MAP sensor in addition to the MAF sensor. The Evo VIII, on the other hands, runs off a MAF sensor exclusively, unless a 3 bar MAP sensor has been added with the benefit of a standalone ECU such as an APEX'i PowerFC D-Jetro or a motec ECU.
I have never once had the car bog or try to die out between shifts. It runs like a champ which is why im so hesitant to gid rid of it. The ONLY reason I am considering getting rid of it is because I want what's best for the car. Not cause I'm not satisfied with its performance. It just kinda sucks that I paid so much for the HKS and now I have to pay more to go back to a stock BOV. That's what I get I guess for ot doing more research before hand.
Yeah, I know the feeling. I felt it when I got rid of my GReddy Type-RS at a loss too. Anyway, just my 2 cents, why not get rid of it and switch to a Forge instead? The SSQV is tried and known to be bad, while the Forge is tried, tested and praised to death
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: Mostly stock MY05 Evo VIII MR RS :
It's much quieter than any VTA BOV, but with an intake, any BOV is still kinda loud. Mine is louder than I want it to be, but it's unavoidable with a cone filter.
Hey, I noticed this post was about blow off valves; I just wanted to mention that my car was stalling and was harder to run when I installed my JDM MR DV. It wasn't running as smooth as stock. Shifting was harder, missing gears here and there. Under heavy loads and pressure, it wouldn't run smooth. Finally, the day before, I thought about switching it back to the stock Blow off valve. But right before that, I decided if I should switch the Jdm Mr Dv backwards. Meaning, currently, the top metal part of da BOV is facing the left side. Before the top metal part of the BOV was on top. Right now, the car is running smoother and idling stock. But also, there is no more blow off noise. Its now completely quiet? Is this supposed to happen with the JDM MR DV? When I installed it wrong at first, It DID have a sound; but now since the cars running fine. It doesn't make any more sounds, its back to how it sounded when it was stock. Any body have any ideas if I did it right? Let me know.
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It just kinda sucks that I paid so much for the HKS and now I have to pay more to go back to a stock BOV. That's what I get I guess for ot doing more research before hand.
