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Discussion Starter · #1 ·
On my quest to find my lost boost after I installed my IPD DP (current consensus is the stock exhaust is creating too much back pressure...) I ordered a new Boost pressure sensor to see if that was the culprit. It was about $92 plus shipping from BV. It wasn't the problem, as I swapped it for my original with no change (original BPS has 12k miles). Now I have two. <p>I had previously bought IPD's HDTCV and so have my OEM TCV.<p>Based on another thread, I also built a little pressure tester consisting of some pvc, rubber reducers, clamps, and a male air compressor nib to check for vacuum and intake leaks. It seems to work reasonably well. <p>I also assembled a waste gate pressure pump. Setup consists of a small hand pump I found in my nightstand, a T, nylon tubing, and a small low pressure air gauge. It connects to the yellow TCV to allow you to set your waste gate opening psi. <p>I suspect that others may have or will have similar challenges. Buying a TCV or BPS is expensive and building these "tools" is something of a pain, especially if you are still diagnosing the problem. I'm willing to loan these bits out to those fellow SS members for the cost of shipping, to help in your discovery process. You are welcome to come to me if you want to use my compressor with the pressure sensor. <p>I wish I had an extra MAF, as I'd make that available too. Maybe someone else does. <p>Anyway, let me know if you are working on vacuum/ boost related issues and if you would like to try any of these parts or assembled tools and we'll work out the details.
 

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Forgive my ignorance, I have not read any of your other threads regarding the issue, but how much boost are you getting right now? How much do you think you should have?<p>I think it is awesome that you are willing to share your tools with SS, my first R had low boost issues (GT, would only go to 10psi).<p>This has probably been touched on, but what kind of fuel do you use generally?
 

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Welcome to the club, lol. After getting my car back from the dealer last week for the collar/angle gear replacement, it feels as if I lost 30hp. Every so often it will stumble at idle and throw a CEL for "Long Term Fuel Trim" or "Fuel Trim Malfunction" and I don't know what hoses the dealer had actually disconnected in order to replace the trans. I am going to hook up my boost gauge this evening to see what kind of pressure I'm actually getting at the manifold. I suggest that you do the same!!
 

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Re: (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>phuz</b> »</i></TD></TR><TR><TD CLASS="quote">Welcome to the club, lol. After getting my car back from the dealer last week for the collar/angle gear replacement, it feels as if I lost 30hp. Every so often it will stumble at idle and throw a CEL for "Long Term Fuel Trim" or "Fuel Trim Malfunction" and I don't know what hoses the dealer had actually disconnected in order to replace the trans. I am going to hook up my boost gauge this evening to see what kind of pressure I'm actually getting at the manifold. I suggest that you do the same!!</TD></TR></TABLE><p>Go back to the dealer and ask about getting some trim.
 

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Re: (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>phuz</b> »</i></TD></TR><TR><TD CLASS="quote">Welcome to the club, lol. After getting my car back from the dealer last week for the collar/angle gear replacement, it feels as if I lost 30hp. Every so often it will stumble at idle and throw a CEL for "Long Term Fuel Trim" or "Fuel Trim Malfunction" and I don't know what hoses the dealer had actually disconnected in order to replace the trans. I am going to hook up my boost gauge this evening to see what kind of pressure I'm actually getting at the manifold. I suggest that you do the same!!</TD></TR></TABLE><p>They most likely had a bunch of intake and intercooler hoses off as the left side of the engine has to be dropped about a foot to get the trans out. My guess is there is one or more hoses not tight or not tight enough. <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0">
 

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Re: Boost issues and tools (Johnr352)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johnr352</b> »</i></TD></TR><TR><TD CLASS="quote">(current consensus is the stock exhaust is creating too much back pressure...) </TD></TR></TABLE>Extremely unlikely as the stock exhaust flows very well. I've never heard of someone losing boost because of the stock exhaust so toss that idea out. <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0"><p>Were any other mods done at the same time the DP was installed?<p>Have you done a Battery Reset or Hard Boot? <br>There is a procedure you can do that clears all adaptive memory and will start the relearn procedure over. Can be helpful if mods are done and the mod conflicts with what the computer has "learned" everything should behave like. <p>As for your MAF, seeing that you have a K&N I would suspect it may have fowled that up anyway. Looking at the Data stream can let you know if the meter is reading correctly, usually. Getting a scanner to read the Data Stream is in most cases cheaper than throwing parts at it.
 

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Re: (BeerEngineer)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BeerEngineer</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Go back to the dealer and ask about getting some trim.</TD></TR></TABLE><p>Believe me, there is no trim at my dealer that is worthwhile.
 

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Re: Boost issues and tools (Oceans60R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Oceans60R</b> »</i></TD></TR><TR><TD CLASS="quote">Extremely unlikely as the stock exhaust flows very well. I've never heard of someone losing boost because of the stock exhaust so toss that idea out. <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0"> </TD></TR></TABLE><p>I concur. I have stock exhaust with DP and no problems.
 

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Re: Boost issues and tools (Johnr352)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johnr352</b> »</i></TD></TR><TR><TD CLASS="quote"><p>I also assembled a waste gate pressure pump. Setup consists of a small hand pump I found in my nightstand....</TD></TR></TABLE><p>Yea, all of us have small hand pumps in our nightstands. TMI. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 

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Re: Boost issues and tools (Short Circuit)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Short Circuit</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Yea, all of us have small hand pumps in our nightstands. TMI. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"></TD></TR></TABLE><p>ROFL!
 

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Discussion Starter · #11 ·
Re: Boost issues and tools (Oceans60R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Oceans60R</b> »</i></TD></TR><TR><TD CLASS="quote">Extremely unlikely as the stock exhaust flows very well. I've never heard of someone losing boost because of the stock exhaust so toss that idea out. <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0"><p>Were any other mods done at the same time the DP was installed?<p>Have you done a Battery Reset or Hard Boot? <br>There is a procedure you can do that clears all adaptive memory and will start the relearn procedure over. Can be helpful if mods are done and the mod conflicts with what the computer has "learned" everything should behave like. <p>As for your MAF, seeing that you have a K&N I would suspect it may have fowled that up anyway. Looking at the Data stream can let you know if the meter is reading correctly, usually. Getting a scanner to read the Data Stream is in most cases cheaper than throwing parts at it. </TD></TR></TABLE><p>Now have a 3" Evolve exhaust to try and, you are correct, no material difference in boost, though it's now loud and runs a little better. <p>I have tried a hard reset of the ecu, just did another today. No real difference. I hit 15-16 psi easy, bang, just when I hit the gas, then it just sticks there and then at 5k starts to build again up to 19-20 by red line. This is different then before the DP, which was, bang right to 18-19 and then build to 20-21. <p>No other mods around the time of the DP really. I have not tried swapping the MAF, I do have a scanner and have no codes. What would I look for as data from my MAF, what would be good/ bad? <p>Thanks
 

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Discussion Starter · #12 ·
Re: Boost issues and tools (Short Circuit)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Short Circuit</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Yea, all of us have small hand pumps in our nightstands. TMI. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"></TD></TR></TABLE><p>I was wondering when someone would notice that...
 

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Re: Boost issues and tools (Johnr352)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johnr352</b> »</i></TD></TR><TR><TD CLASS="quote"> Setup consists of a small hand pump I found in my nightstand, .</TD></TR></TABLE><p>Wow, I'm the only one who noticed this line? <p> <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
 

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Re: Boost issues and tools (Johnr352)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johnr352</b> »</i></TD></TR><TR><TD CLASS="quote"><br>What would I look for as data from my MAF, what would be good/ bad? <p>Thanks</TD></TR></TABLE><p>Without digging into old books, I would say a datastream for the MAF should be about 12.5-15 g/m (grams per mile). Anything over or under could indicate a fuel trim issue, be it a vacuum leak or boost leak or a bad meter. The bad meters I've seen were in the 20's.<p>Did you change Tunes at the same time you changed DP? Going from Stage 1 to Stage 2 kinda has that effect as to calm down boost spikes which are more prevalent when adding a DP. But the extra flow of the DP still gives a boost in power even though boost read may be lower. So it kinda sounds like you are close to how your system is designed to be run. <p>I won't say anything about the IPD HD TCV other than you should search these and other forums for everyones experiences with this product. You may find a lot of your answers within those posts.
 

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Discussion Starter · #15 ·
Re: Boost issues and tools (Oceans60R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Oceans60R</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Without digging into old books, I would say a datastream for the MAF should be about 12.5-15 g/m (grams per mile). Anything over or under could indicate a fuel trim issue, be it a vacuum leak or boost leak or a bad meter. The bad meters I've seen were in the 20's.<p>Did you change Tunes at the same time you changed DP? Going from Stage 1 to Stage 2 kinda has that effect as to calm down boost spikes which are more prevalent when adding a DP. But the extra flow of the DP still gives a boost in power even though boost read may be lower. So it kinda sounds like you are close to how your system is designed to be run. <p>I won't say anything about the IPD HD TCV other than you should search these and other forums for everyones experiences with this product. You may find a lot of your answers within those posts.</TD></TR></TABLE><p>Thanks, I'll play with my logging to see where my MAF sits. I did switch to Stage 2 around the same time, but have now swapped back and forth from Stage 1, stock, and stage 2, same deal. I also swapped my TCV back to stock, then back to IPD's, with no change. <p>I discussed with Lucky yesterday, I'm going to swap air filters from the K&N to stock, measure the MAF, and see where that leads me. We discussed the chance that my lower levels could be just because I'm hitting my torque targets already, meaning my engine is just that fabulous with my other mods that it doesn't need more boost... Consensus was that might be if the boost drop was about 1 psi or so, but mine's a bit more. I'll report back with some data...Thanks again.
 

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Discussion Starter · #16 ·
Re: Boost issues and tools (Johnr352)

So, Swapped the MAF and reset the ECU, replaced the K&N with the stock filter. It's maybe somewhat better, but still not the crack to 18-19 psi at 4k rpm in 4th. I'll know more tomorrow as the ECU adapts. Seems though that this isn't it. I'm going to hunt around for someone with a true smoker to see if they can use it on the post turbo side. Maybe I have a tiny leak in an intercooler hose. I have tightened them all down, so it's not the clamps. Not sure there is anything else to try... except dropping the turbo and inspecting the CBV - though at 12,500 miles, CBV failure seems unlikely.
 

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Discussion Starter · #17 ·
Boost issues or Dead Cats don't boost...

OK, I figured it out... Well, I think "figured" is something of a misnomer, as the culprit was just a final, additional, thing to check. If you read throgh this thread you can quickly get the gist of my problem, lower, somewhat wonky, boost issues. You can see that I swapped a number of parts (that's why I have spares to share...) in an effort to solve my problem. Finally, I spoke to Todd Henderson of Heico and AI Design. After some discussion he recommeded I meet with Billie at Kundert Volvo in NJ. Billie drives a similarly modded SR and is QUITE knowledgable.<p>I met with Billy today and after a test drive to determine the nature of my boost problem we decided on of the last issues to try was to pull my new IPD DP and make sure it was working properly. Please note I had many conversations with several people about my symptoms and the consensus was it was unlikely to be the DP. It was. Meaning, we pulled the D to discover that the cat had, essentially, blown up, and become completely dislodged. This would impede and disrupt the airflow such that my boost, torque and all good things were reduced. I'm doing more research but am thinking it might be the cause of the stock market decline too. <p>Nonetheless, I'll call IPD on Monday and sort out the next steps regarding their DP. <p>As soon as we (Billy) reinstalled the stock DP my boost returned. It's a drug, a wretched, consuming, enveloping, all powerful drug. I want it. I like it. It's back - third gear pulls at 5k rpm bring 20psi and solid, gut grinding, tire noshing, acceleration. Interestingly, the Evolve exhaust is now MUCH louder, as the car is finally breathing. <p>Yikes, it really is something. Pay attention to your cat...<p><BR><BR>
<i>Modified by Johnr352 at 6:18 PM 6-6-2009</i>
 
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