Brad850 Posted May 14, 2009 Report Share Posted May 14, 2009 Could someone give me some info about the wastegate... like how do i check what psi it is currently set to and what psi should it be set to for my tune...I have an Ipd Ecu, stock 16t. I think my brother messed with it years ago and I want to make sure its set at the correct length.The only reason I want to look into this is because I'm only getting 10-11 psi where i should be getting 14-15. I upgraded the cbv valve so i know its not that, and all the vacuum lines were recently replaced too. I'm wondering if maybe i should replace the wastegate actuator? Link to comment Share on other sites More sharing options...
--Aaron-- Posted May 14, 2009 Report Share Posted May 14, 2009 You're going to hook up the wastegate line to a pressure pump and lengthen/shorten the arm as needed so it starts to open with 3/4 lbs of pressure.Are you on your stock BCS, MBC, etc.? Link to comment Share on other sites More sharing options...
Brad850 Posted May 14, 2009 Author Report Share Posted May 14, 2009 Yea mostly everything is stock other than the cbv. I don't have an mbc and i was under the impression that i should get 14.5 psi without one. Link to comment Share on other sites More sharing options...
Snabb T5M Posted June 2, 2009 Report Share Posted June 2, 2009 So lenghtening/shortening the wastegate rod so that it opens under 3/4 lbs of pressure, is that pretty much universal for all turbos? On my S70 T5, years ago I shortened the rod 2 full turns, and now since the motor is being rebuilt, I shortened it another full turn, so 3 full turns in total I shortened it. Does this adjustment depend at all on a tuned ECU, or a 3" DP or anything else? Just wondering if I should go back to the 2 turns instead of the 3. I saw in a more recent post someone mentioning bending rods if you go overboard with shortening it, so it has me thinking, is 3 turns too much. Link to comment Share on other sites More sharing options...
Dan A Posted June 2, 2009 Report Share Posted June 2, 2009 Yea mostly everything is stock other than the cbv. I don't have an mbc and i was under the impression that i should get 14.5 psi without one. When you replaced the CBV, did you use RTV sealer? Also, double check all your silicone lines. When I replaced mine a couple weren't zip tied tight enough and I had a couple of leaks. It's probably not a wastegate issue, much more likely a vacuum leak somewhere. edit: The only reason that I can think of for the wastegate causing your issue is if the wastegate itself is not properly seating. So lenghtening/shortening the wastegate rod so that it opens under 3/4 lbs of pressure, is that pretty much universal for all turbos? On my S70 T5, years ago I shortened the rod 2 full turns, and now since the motor is being rebuilt, I shortened it another full turn, so 3 full turns in total I shortened it. Does this adjustment depend at all on a tuned ECU, or a 3" DP or anything else? Just wondering if I should go back to the 2 turns instead of the 3. I saw in a more recent post someone mentioning bending rods if you go overboard with shortening it, so it has me thinking, is 3 turns too much. That seems like a lot. I put a pressure gauge and pumped air on mine when I adjusted it and I think I only made 1 turn on it for 3-4lbs. 3 turns is probably going to build boost too quickly. Shouldn't make much difference on what your other mods are. Link to comment Share on other sites More sharing options...
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