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 have just a quick question. whats all this talk about no running VTA blow off valves? I was under the impression that it was because you would have idle issues and whatnot...but I have the HKS SSQV and have had no such problems. Maybe i just dont realize them, so please...explain.
I moved your post because it didn't have much to do with the topic it was posted in.
In regards to your VTA; some ECU's are more touchy than others. If your car doesn't stumble between shifts or stall when you come to a stop...
Poor idle and stalling when coming to a stop with clutch in are just some of the more obvious symptoms. The non-obvious symptom that has the biggest impact is the fact that our MAF (mass air-flow sensor) meters the air coming through the intake. When you shift under boost, you purge a lot of that air into the atmosphere, however, the fuel system still supplies the amount of fuel required to maintain the AFRs designated by the tune. So, when you have all that fuel and less air, it causes a rich condition between sihfts that is 100% unavoidable no matter what you feel or don't feel. It is completely improper to run the HKS SSQV or any other VTA BOV unless it is recirculated. Even then, the HKS SSQV does not properly open at idle like other BOVs, because it is a pull-type, yet we need our BOV to open at idle in order to maintain the proper vaccuum. maybe your idle is high to mask it or something, but it should not work without some noticable symptoms. Regardless, though, the aforementioned rich condition is happening every time you shift under boost.
If you put a recirc kit on it you will feel a major difference and there will not be that lagging feeling in between shifts. I tested it on my 2g dsm. Once I recirculated my BOV you could just feel a major difference in the driving. you should try it, I think you will be amazed.
I don't think it's worth it to pay even more for a recirc kit just to make an already-expensive BOV work. The total cost of the parts really do not make it remotely worth it when a $100 JDM MR DV works even better on the Evo. The HKS SSQV should only be used on a big turbo setup with a standalone ECU running speed density.
I'm with Warr on that. A JDM MR DV is much better than most people think, and if the pssh pssh sound is your bag, then just get an open pod filter and you'll heard the DV purge.
How would i know if i was experiencing compressor surge? Would i hear it, or feel it? Im getting a custom flash as soon as i get my car back... would that help?
I don't think it's worth it to pay even more for a recirc kit just to make an already-expensive BOV work. The total cost of the parts really do not make it remotely worth it when a $100 JDM MR DV works even better on the Evo. The HKS SSQV should only be used on a big turbo setup with a standalone ECU running speed density.
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!
the only reason im stuck on using it is because its already installed. other than that i could care less... but if i can make it work, then id rather not have to buy a new one. Ive been looking at the ones you mentioned and am thinking about purchasing one now
Sell it to a Supra or Skyline and use the money to get either a JDM MR DV or a Forge RS DV. That's just my 2 cents. There is no real solution to the problems caused by the SSQV.
SSQV -- creates problems, no performance gains, possible potential loss.
It's like buying tyres that are wrongly sized for your car, then being reluctant to get them off even though they cause handling problems, rub your fenders causing damage, and doesn't have good lateral or braking grip. Would you keep those on your performance car?
I know I wouldn't
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: Mostly stock MY05 Evo VIII MR RS :
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