 stock 3sgte boost psi ????? |
 Dec 30, 2006 - 3:30 PM
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Enthusiast  Joined Mar 4, '06 From Ohio Currently Offline Reputation: 10 (100%)  |
I just got my swap done and drove it today. Its only boosting to 6-7 max psi. I think the mechanical boost gauge is ok because its vacuum is reading 20 at idle. When I pinch off the vacuum hose on the side of the turbo the boost goes through the roof until fuel cut! Is this normal for a stock 1991 st185 with top mount intercooler to only get 6-7 psi? I thought it should be about 10-12 psi. Or is that psi only possible with modifications to the wastegate? Thanks for the help!
-toyotacrazy |
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Replies
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Jan 2, 2007 - 1:09 AM
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 Enthusiast Joined Aug 28, '04 From FLA USA Currently Offline Reputation: 4 (100%) |
Most likely, it is the IC heat soaking.
The charged air is too hot and the ECU responds to that by retard timing and won't let the car boost past 7 psi by controlling the T-VSV. Restrictive (small) exhaust is less likely to cause that unless you have a clogged cat. -------------------- _Gary
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Posts in this topic
toyotacrazy stock 3sgte boost psi ????? Dec 30, 2006 - 3:30 PM
playr158 6-7 psi should be running off the wastegate only..... Dec 30, 2006 - 4:12 PM x_itchy_b_x your in safe mode. something that tells the ecu th... Dec 30, 2006 - 4:36 PM malecrod I had the same low boost mode when I got my swap d... Dec 31, 2006 - 8:27 PM lagos you cant use the top mount IC with our cars. insta... Dec 31, 2006 - 8:30 PM toyotacrazy Im running a completely stock except the flex pipe... Dec 31, 2006 - 10:11 PM jcbass7 im having the same issues with my swap, but once m... Jan 1, 2007 - 11:09 PM lagos QUOTE(Gary @ Jan 2, 2007 - 1:09 AM) ... Jan 2, 2007 - 2:23 AM toyotacrazy I understand how the tmic is not the best setup. ... Jan 2, 2007 - 6:16 AM
Gary QUOTE(toyotacrazy @ Jan 2, 2007 - 6... Jan 2, 2007 - 8:44 AM toyotacrazy QUOTE(Gary @ Jan 2, 2007 - 8:44 AM) ... Jan 2, 2007 - 12:30 PM zCelicaDude QUOTE(Gary @ Jan 2, 2007 - 1:44 PM) ... Jan 2, 2007 - 2:48 PM toyotacrazy thank you! That is very helpful. Jan 2, 2007 - 9:19 AM lagos yes... st205 has tsvs. you can use it to monitor y... Jan 2, 2007 - 3:02 PM toyotacrazy QUOTE(lagos @ Jan 2, 2007 - 3:02 PM)... Jan 2, 2007 - 6:01 PM 2slow2nervous wat is the max psi u guys would reccomend pumping ... Jan 2, 2007 - 6:35 PM |
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