SwedeSpeed - Volvo Performance Forum banner

1 - 20 of 23 Posts

·
Registered
Joined
·
588 Posts
Discussion Starter · #1 ·
I have a k24 w/ an 18G mitsubishi compressor wheel. I had it done at Boost Lab in Tampa, Fl. I got referred to them by a guy in Lakeland with a twin turbo Dodge Viper.....yea that was enough for me. LOL. Kirk runs the shop and knows a lot about turbos. Kirk told me he wasn't going to clip the turbine wheel because it adds lag. All boost leaks were exposed by this new turbo btw. I mean it pushes so much more air it was blowing couplers off everywhere, so I had to redo some of the piping. Prolly getting rid of the ote pipe in the near future. That thing sucks mega heat! The turbo has no lag whatsoever and it spools so quick. Oh and I have a forge cbv but there is a lot of flutter going on. Here's the problem! My boost is cutting out! I'm going to try to post a video to let everyone see whats happening. I talk to Ken Pruitt @ IPD and he said that the wastegate needs to be adjusted. I adjusted the wastegate this weekend. A full 2 and a half rotations and it really didn't change anything. This has been going on for about two months and I've been dragging my feet on this, but now I'm ready to fix it. ANY HELP IS GREATLY APPRECIATED!!! Chime in guys! THANKS!


 

·
Registered
Joined
·
3,269 Posts
did you get a tune before or after the turbo upgrade?
 

·
Registered
Joined
·
588 Posts
Discussion Starter · #4 ·
I have IPD Stage 2 with torque delete. Ken Pruitt said the tune should work with the turbo. And I've had the tune before I put the turbo in. I have the "tune" spring in the cbv.
 

·
Super Moderator
Joined
·
14,831 Posts
The new turbo isn't going to make the couplers come off any easier. It is the air pressure, not the flow, that causes them to break loose, and if you are hitting your cutout, you are hitting some high pressures. You should definitely check your TCV and wastegate settings. The ECU reacts to overboosting with fuel cutout, but I've seen a situation where this has been too late and the head gasket failed. Definitely get this resolved!! :D
 

·
Registered
Joined
·
3,269 Posts
whats your wastegate set to by the way? (after the adjustment)
 

·
Registered
Joined
·
588 Posts
Discussion Starter · #7 ·
To be honest I know the wastegate was set to stock psi when installed. How do I check the tcv? How do I know if thats the issue? I know how to adjust to wastegate, but what psi do I need to adjust too? Any tools out there I can use? Thanks
 

·
Super Moderator
Joined
·
14,831 Posts
To be honest I know the wastegate was set to stock psi when installed. How do I check the tcv? How do I know if thats the issue? I know how to adjust to wastegate, but what psi do I need to adjust too? Any tools out there I can use? Thanks
The TCV should be normally open between the compressor and the wastegate. That means if you blow through the compressor end, it should go through, and when its energized, it should be closed. 4.5psi is a conservative wastegate setting and 7psi is more aggressive.
 

·
Registered
Joined
·
588 Posts
Discussion Starter · #9 ·
Wow! I think I'm pretty off then. Only turned 2 1/2 so I got a ways to go till 7. Any where I can get a pump to check the psi?
 

·
Registered
Joined
·
3,269 Posts
you can check through your boost gauge if you disconnect the TCV. Post that vid asap.
 

·
Registered
Joined
·
588 Posts
Discussion Starter · #11 ·
OK! Going for a ride and I'll be back to post the video.
 

·
Registered
Joined
·
1,761 Posts
Personally I would not F**k with the wastegate on these cars, your already overboosting, blown couplers, that has nothing to do with the increased flow from the 18G compressor wheel. I would put it back to where it was.
 

·
Registered
Joined
·
588 Posts
Discussion Starter · #13 · (Edited)

·
Registered
Joined
·
4,740 Posts
Adale,

Does the car boost when you ease the gas in but dump it any time you go aggressive on the peddle?

I've seen this before. That's the engine advancing ahead of the turbo. It happens in the MT's when pressure is released from the driveline... like an incorrect pressure plate. I've never seen it in the GT's before.

A few questions:

What happens when you go back to stock and the torque limiter is active? Does it get worse or better?

Did this happen before going stage 2 ? ... or did you go all out and install everything at the same time?

Do you have a boost gauge?

Do you have a data logger with the IPD software?

Who's the maker of the forged CBV and where did you get it?

Can you tell me the AFR's that you mentioned in the PM? I was curious what those look like.

The basic problem you have is that there is low pressure in the intake manifold and a higher pressure rating on the front side of the throttle body... or less pressure in the line that connects the CBV to intake manifold. You could start by returning the limiter back to stock settings to see if it's a load problem from the transmission. If that doesn't do anything, then I'd start with a boost gauge hooked up to the manifold to read pressure on the back side of the TB and read the IPD data logger that picks up readings on the front side of the TB. Could compare notes. The 2 pressure points have to be pretty equal. If the manifold is lower than the front side of the TB, then you have to figure out why the engine ins't holding pressure in that point. This could be either the engine compression readings are low, the engine is advancing due to no load on the car or you have a bad TB.
 

·
Registered
Joined
·
2,461 Posts
Wow! I think I'm pretty off then. Only turned 2 1/2 so I got a ways to go till 7. Any where I can get a pump to check the psi?
WHOA, dude, one turn is NOT one psi! (at least not on any i've seen, never done an 04-07 before though). You need to hook up a little boost gauge to the wastegate it self to adjust it properly. Sounds like your wastegate might be Wayyyyyyy overboosting right now. Seriously, don't touch it or get on the throttle hard at all until you ensure the wastegate is correct, otherwise you risk your motor doing a nice impression of a bomb.

Do you have a boost gauge in the car? What boost are you hitting (or not hitting?).

IPD makes a wastegate adjustment tool though not sure it works on the 04+ R, http://www.ipdusa.com/products/6820/115202-wastegate-adjustment-tool
 

·
Registered
Joined
·
4,740 Posts
Sounds like your wastegate might be Wayyyyyyy overboosting right now. Seriously, don't touch it or get on the throttle hard at all until you ensure the wastegate is correct, otherwise you risk your motor doing a nice impression of a bomb.
This is incorrect information and an impossible scenario.
 

·
Registered
Joined
·
588 Posts
Discussion Starter · #17 ·
Killer B
I haven't flashed back to stock and drove as of yet. I will tonight when I get home to see the difference.
This happened after I had the turbo installed. That's why I was thinking this was a waste gate issue. I've had stage 2 for about a year with no problems.
Yea I have IPD r boost gauge.
Yes I have the IPD data logger.
It's the forge Cbv from viva performance.
Using the IPD live data, the afrs are fine until I get around 3k and they start to slip. The fuel cuts out when the afrs drop in the 9.xxx range. So I don't if it's a tune or really bad wastegate adjustment.
 

·
Registered
Joined
·
4,740 Posts
Killer B
I haven't flashed back to stock and drove as of yet. I will tonight when I get home to see the difference.
This happened after I had the turbo installed. That's why I was thinking this was a waste gate issue. I've had stage 2 for about a year with no problems.
Yea I have IPD r boost gauge.
Yes I have the IPD data logger.
It's the forge Cbv from viva performance.
Using the IPD live data, the afrs are fine until I get around 3k and they start to slip. The fuel cuts out when the afrs drop in the 9.xxx range. So I don't if it's a tune or really bad wastegate adjustment.
What's the boost Gauge read?

When you over boost with a high wastegate setting, the car should jerk multiple times. This is because after failed attempts to make the adjustments from the TCV, the car starts cutting off the fuel pump via the FPM to dial back power. You really never over boost because it's pretty much impossible to go over the tuned settings... and the car has several ways to shut down the system when it does go outside that range. Myself and Tiger were going for 4-5 turns on the wastegate back in 2008 to see where the car would except the boost and where it started jerking.

When you have AFR's in the 9 range, you have to start a compression test on the cylinders and really search out a leak in the system. You could very well have a messed up cylinder head and all the positive pressure in the intake manifold is leaking right on out.

If you had a substantial leak, that would pull all the positive pressure from the manifold, open up the CBV, dump the charged air, show 9's or lower because there is more draw on the MAF and then send the signal to the PCM to shut down the fuel. That's the fail order. If you have a failed CBV line from the manifold or leak in the charge pipe system, then you're most likely not going to build a lot of boost.... and typically you get a chocking feedback from the car, from an over rich system. AFR's are a direct reading from the MAF. That's from all my experience and it usually indicates a leak in the system post manifold.

I'd start with:

-Compression test
-Search for leaks in the charged piping
-Check the car mechanically first
-Dial Back the software
-Go back to the stock turbo


also what does the Data logger pull on boost vrs what you see from the boost guage? The reason I asked is that there is the sensor on one side of the TB that the data logger reads and your boost gauge will read on the other side of the TB.
 

·
Registered
Joined
·
4,740 Posts
lol Pete. I'm more into the twin turbo porn myself. A little turbo on turbo is always hot.

Also Adale

Not to dog the IPD guys or putting anything against them, but that software is for a (x+Y+Z) parts. It may have the ability to adapt to small changes from the original car they tested and wrote that for, but when you start adding stuff like a custom turbo or this part or this other custom part... you really have to look for someone that does tunning on a dyno. Still try the test I mention above, but if you go to the stock turbo and it clears things up, you may have to look for a dyno tuner.
 

·
Registered
Joined
·
4,740 Posts
hummm .... but I remember Tigers1981 posted he was using the Viva turbo mod (+ stuff) with his IPD tune and getting 300 dyno hp (or more, but who believes anything posted on SS ??). .
I don't ever remember Mr Coits numbers after he did the turbo upgrade. I do know that he had a really good Volvo Master Tech doing the work.

meanwhile, a note to IPD asking for ?? custom tune came back: nope
You have to ask Marco Alsterfalk or Fredrik Jonsson of MTE if you wanted to do a IPD custom tune. From my experience, MTE wasn't very good at responding back to my e-mails. Probably why it's easier to say no.

I'm watching the guys in Georgia with their tune day to see what the out come is. Specifically one of guys doing the stage 3 tune there. I'm still getting the RICA unit to hold my tunes.
 
1 - 20 of 23 Posts
Top