MSP Turkey: FACTS
- Thread starter SoniCraze
- Start date
Dexter said:
Yeah, I thought he was referring to a MSP owner too. I know of 0 MSP owners that have fixed the turkey....which I guess is definitive proof that there aren't any smart MSP owners!
This is an interesting thread because we know the turkey is compressor surge but nobody knows how to fix it. People have tried enough things that I'd think somebody would have fixed it on ACCIDENT by now lol! I'm not to worried about the surge at such low boost and small turbo, but I'd still rather fix it if somebody can come up with how to do it. 505's BOV is not too small and it sounds like he's tried enough changes that he'd have accidently fixed it by now. We need more suggestions - keep them coming.
YES, it is most definitely compressor surge. It has for sure gotten better from running the new vacuum lines and removing the restrictive return to the injen. I think to fully get rid of it though, with the msp's small turbo, you need dual BOV's. If it gets any better by adding the stock BPV into my setup, then I will try using twin SSQV's
I think having it vent right at the turbo in addition to the TB will be the answer. I'll know more tomorrow.
Before, with old vacuum source and recirculating:
http://www.wpi.edu/~jck15243/MOV00495.MPG
After:
http://www.mazdamp3.com/members/505zoom/mov00516.mpg
I think having it vent right at the turbo in addition to the TB will be the answer. I'll know more tomorrow.Before, with old vacuum source and recirculating:
http://www.wpi.edu/~jck15243/MOV00495.MPG
After:
http://www.mazdamp3.com/members/505zoom/mov00516.mpg
Last edited:
jersey_emt
Member
- :
- 04 MSM #1089
505zoom said:YES, it is most definitely compressor surge. It has for sure gotten better from running the new vacuum lines and removing the restrictive return to the injen. I think to fully get rid of it though, with the msp's small turbo, you need dual BOV's. If it gets any better by adding the stock BPV into my setup, then I will try using twin SSQV's
Before, with old vacuum source and recirculating:
http://www.wpi.edu/~jck15243/MOV00495.MPG
After:
http://www.mazdamp3.com/members/505zoom/mov00516.mpg
OK, I've read through this thread a few times, but can't seem to figure this out.
What EXACTLY have you done to make the MSP sound like the 'After' video. A How-To would be perfect....you're definitely heading in the right direction. By letting everyone know exactly what you did, and exactly how you did it, maybe somebody will be able to figure out how to kill the turkey completely.
jersey_emt said:
Ok, here ya go:
First, I removed all of the wastegate vacuum line assembly, that includes the lines that go from the wastegate and BOV to the T, and the line from the T to the manifold. I then replaced with shorter, seperate lines for each.
After that, I changed the BOV to open vent instead of recirculating. I am going to make a new larger return nipple on the intake(instead of the tiny, U shaped piece that injen put on there). To that, I will run a 1"ID hose from the BOV. Hopefully that will help with the surging while also recirculating.
jersey_emt
Member
- :
- 04 MSM #1089
girth said:Holy crap, you've already made an awesome improvment 505! You damn near have it totally fixed. Now if only I was technical enough to follow your How-To.....we need pictures and a detailed how-to once you're all done.
It doesn't sound bad at all....just following some vacuum lines, removing them, and replacing them with shorter, dedicated lines instead of just teeing them off.
It's really not hard at all. You actually can remove all of those vacuum lines without any damage, you just have to be careful. The entire thing can come off, still in one piece, so if you need to put it back on for service, you can. It would also be a good time to add a boost controller.
I'll try again
1) Find the vacuum line going from the wastegate up to a white/yellowish T fitting. It is the one that you put a boost controller on. Disconnect that hose from the wastegate, with the clamp still on it (just pull).
2) Disconnect the thing that looks exactly the same on the BPV. Both of these lines run to the T fitting, leave those connections alone!
3) Now, follow the other line that comes off of the T up towards the TB. Disconnect the line from the manifold, it will have the same style of clamp as the others. The whole thing is now almost loose.
4) Here's what will be hard to describe. You need to free the line from the plastic clamp, next to the T. The line that runs from the manifold to the T has a protective larger piece of hose around it, you will need to remove this from the line. Pull it towards the end that you removed from the manifold, and all the way off of the vacuum line.
5) After that, you can pull the entire assembly out through the little clip that is next to the T.
6) With all of that removed, you can now run a new source line from the nipple on the manifold that you removed the original from, down to the wastegate.
7) Finally, tap into another line for the source for your BPV. I tapped my boost gauge source for temporary use.
I'll go through my pics and see if i have any that will help illustrate. If I didn't make any sense, sorry, it makes sense to me.
.I'll try again
1) Find the vacuum line going from the wastegate up to a white/yellowish T fitting. It is the one that you put a boost controller on. Disconnect that hose from the wastegate, with the clamp still on it (just pull).
2) Disconnect the thing that looks exactly the same on the BPV. Both of these lines run to the T fitting, leave those connections alone!
3) Now, follow the other line that comes off of the T up towards the TB. Disconnect the line from the manifold, it will have the same style of clamp as the others. The whole thing is now almost loose.
4) Here's what will be hard to describe. You need to free the line from the plastic clamp, next to the T. The line that runs from the manifold to the T has a protective larger piece of hose around it, you will need to remove this from the line. Pull it towards the end that you removed from the manifold, and all the way off of the vacuum line.
5) After that, you can pull the entire assembly out through the little clip that is next to the T.
6) With all of that removed, you can now run a new source line from the nipple on the manifold that you removed the original from, down to the wastegate.
7) Finally, tap into another line for the source for your BPV. I tapped my boost gauge source for temporary use.
I'll go through my pics and see if i have any that will help illustrate. If I didn't make any sense, sorry, it makes sense to me.
Last edited:
jersey_emt
Member
- :
- 04 MSM #1089
I'm going to try 505zoom's idea on the stock BPV (with the Injen) and see what happens. Hopefully I'll be able to do it tomorrow.
ARunto said:
Yeah, same here. It will still surge the same as before on low boost throttle lifts, even with the clutch still engaged. My theory is that with the stock BPV back in the system, it will open for the low boost lifts, and the HKS will still sound badass under full boost blowoffs.
