Making more boost than normal
06-06-2018, 04:15 PM
#1
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Join Date: 07-10-17
Location: Elpaso texas
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Making more boost than normal
I have an 08 tc and it makes about 20-22 psi i have no tune on this car. At first i thought it was a tune but i have replaced the ecu with a new one so im not sure why its making so much boost
06-07-2018, 09:39 AM
#4
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There is two types of map sensors, grab a pic
06-07-2018, 09:54 AM
#5
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iTrader: (6)
This is what I meant.
The 3bar sensors that come with the GM Stage 1 kit are blue on the top (not the part in the charge air). Given the boost you're seeing I would assume it has GM stage 1 and a dealer would flash you a new ECU with the stage 1.
The 3bar sensors that come with the GM Stage 1 kit are blue on the top (not the part in the charge air). Given the boost you're seeing I would assume it has GM stage 1 and a dealer would flash you a new ECU with the stage 1.
06-07-2018, 09:59 AM
#6
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If you send me your vin I can verify if it has gms1 on the ecm calibration list.
06-13-2018, 01:44 PM
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Join Date: 06-13-18
Location: Calgary
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I had this problem
I was driving home from work and I floored it for fun but my car overboosted to 23psi and i went flying and then the next day i had no boost at all. Turns out it was my boost actuator, it kept getting stuck open and closed
06-16-2018, 01:04 AM
#10
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In the extreme heat of summer in the SoCal desert I'd see higher than normal boot. With the hotter, less dense air at high desert elevation the computer calculates the ambient air having lower density and runs more boost to provide the same engine torque output as at cooler, lower elevations.
Other explanations could include a vacuum leak, problem with the wastegate actuator, or even a gauge reading slightly off (although the stock electronic gauges seem to be holding up pretty well from what I've seen, at least compared to many lower end gauges that use direct vacuum/boost pressure).
Other explanations could include a vacuum leak, problem with the wastegate actuator, or even a gauge reading slightly off (although the stock electronic gauges seem to be holding up pretty well from what I've seen, at least compared to many lower end gauges that use direct vacuum/boost pressure).
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