1999 V70t5m Overboost is killing me

Thread Tools
 
Search this Thread
 
  #1  
Old 09-19-2012, 06:25 PM
fstaslp's Avatar
Junior Member
Thread Starter
Join Date: Apr 2012
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Default 1999 V70t5m Overboost is killing me

I am losing it.

I have attached a video and you can clearly see that i am hitting fuel cut out.

I have replaced the following:
Stock TCV and IPD HD TCV (although I couldn't complete the learning on it)
BPS
All Vacuum Lines are silicone, new and as short as possible
Blue port is going to fresh air inlet
Red port is on compressor housing
Yellow Port is on Wastegate
Stock ECU

^^^^^I have checked these connections a million times and also all clamps are tight.

I have adjusted the wastegate to 4.5 PSI as IPD calls out and it make it worse, so I lengthened the rod to make it come on slower.

I have connected the compessor to the WG actuator, and it will not overboost it builds to about 9, but this is on city streets, and not maintained as if it were highway.

I used the IPD wastegate tool and the actuator is fully open at 12 PSI.

I have another wastegate actuator to try but it is a 300/70 and for my 18t when I install that. I am afraid this would only make the problem worse.

Current mods are as follows:
Stock 16t Turbo
EST Intake/ Snaab Inlet Pipe
3" DP/no cat/est cat back
stock plugs gapped to .028

Please help as I don't know what else to do.

Video of the situation:


You see it overboost to cut off then it over boosts again but not hitting cutoff.
 

Last edited by fstaslp; 09-20-2012 at 09:54 AM.
  #2  
Old 09-20-2012, 09:54 AM
fstaslp's Avatar
Junior Member
Thread Starter
Join Date: Apr 2012
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Default

link updated
 
  #3  
Old 09-20-2012, 04:29 PM
fstaslp's Avatar
Junior Member
Thread Starter
Join Date: Apr 2012
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Default

What do you think about this setup:

Run a MBC and TCV. I would put the MBC on a tee coming from the trubo compressor line to the inlet of the MBC and then the outlet of the MBC would tee into the TCV-Wastegate line.

By doing this, I could allow the car to control lower boost as intended and then use the MBC to control top boost if I set it at 12 PSI. This should eliminate the spiking right?


http://www.flickr.com/photos/fstaslp/8007336333/http://www.flickr.com/photos/fstaslp/8007336333/ by http://www.flickr.com/people/fstaslp/, on Flickr
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dnarby
Volvo 240, 740 & 940
2
08-01-2014 07:20 AM
SoDoWarts
Volvo C70
0
05-15-2012 10:28 AM
Bill Fox
Volvo S80
2
06-14-2011 09:04 AM
Psaboic
Volvo XC70
4
10-26-2010 07:58 PM
cczaphod
New Members Area
0
08-10-2010 03:56 PM



Quick Reply: 1999 V70t5m Overboost is killing me



All times are GMT -5. The time now is 03:43 PM.