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Discussion Starter · #1 ·
first off, anyone with a stock TCV/BCS, can you do me a favor and look under your hood and tell me which colors for the vacuum lines go to where on the car? there are three colors, each is marked with a colored paint dot.<br>red.<br>yellow.<br>blue.<p>second, i have swapped out my stock ECU for a stock R model ecu for the purpose of gaining "r-spec performance". well i cant seem to get over 8-10psi of boost according to my autometer procomp boost gauge.<p>I have replaced the CBV with an upgraded piece from Viva performance, i have replaced all of the vacuum hoses with silicone ones as they were a bit old and spongy/cracked. Also installed a delco TCV and i *think* i performed the proper boost control relearn procedure (if there is one for a '96, i dont even know, i followed the procedure for the later model S70 turbo models) disconnected the ecu for several minutes to drain the capacitors, disconnected the batt terminals and touched em together for a few seconds also.<p>This was done over a month ago, i realize that volvos tend to take a WHILE to learn things, so i waited this long.<p>Most times the car will boost to 10psi and between shifts it peaks to 13-14psi. The r model ecu is supposed to boost to 12psi.<p>If the TCV isnt the problem (cant check that until i find out which hoses went where) then i will try swapping back to the original ecu.<p>Who knows maybe my gauge is off. I just teed it off of the hose going to the cluster, under the dash.<p>Thanks in advance for any help you guys can offer.<p>also: all hose clamps are TIGHT as hell and i cant see any signs of any places it should be leaking from. if none of this works i guess i'll end up getting an RIP kit or something like that.
 

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Re: a couple of questions for 850 turbo folks. (nextproject)

<IMG SRC="http://img92.exs.cx/img92/797/d3ubcslines.jpg" BORDER="0"><p>green goes to from turbo to bcs (into bcs)<br>yellow goes back out to turbo<br>blue to intake pipe (there's a small nipple underneath it)
 

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who told u 12 psi?<p>us-spec 95 850 t5r and 96/97 850r only get a short duration (30 secs) of 10.9 psi boost rather than the turbo's 9.6psi
 

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11 sounds right. ipd says 12 but idk. my 850R when it was stock was getting just over 11 and a 13-14 inbetween shifts. make sure u do a solid stage 0. also a HD TCV wont hurt.
 

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Discussion Starter · #5 ·
well that makes sense, i was getting my information solely from IPD's and ViVa's websites regarding what their ecu's run for boost, as they also list what stock T5's and turbo's and r's run for boost.<p>I have prided myself on stage zero. Cap/rotor/volvo plugs/IPD wires, MSD coil kit, K&N drop in, fuel filter, cleaned MAF sensor, doesn't throw any codes, shaft play on turbo is almost nonexistent, no smoke in the exhaust, timing belt/tensioner/wp/tstat/timing belt "hardware", replaced all vacuum lines with silicone, also replaced the TCV with delco TCV, also replaced the entire flame trap with IPD's flame trap kit. Also replaced the CBV with ViVa's upgraded replacement.<p>SO. All in all this may be normal operation?<BR><BR>
<i>Modified by nextproject at 8:48 PM 7-23-2009</i>
 
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