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Overboosting?

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Old 02-03-2005, 06:26 AM
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Overboosting?
I recently had a catless uppipe and a catted downpipe installed and now something weird is going on. On the way home from work this morning, I went WOT in 4th on the highway and saw my boost gauge hit 18psi. I let off the gas when I saw this happen, but the bad thing is that its a stock turbo. I'm sure they're are a few people who do mods w/o tuning, and if thats the case, has anyone ever experienced this before? I'm going to lay off the high boost runs until I can get tuned properly. Is there anything else I can do for now, besides laying off boost?
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Old 02-03-2005, 03:46 PM
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You have no other mods?
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Old 02-03-2005, 03:49 PM
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I have a flat panel air filter, uppipe, downpipe, catback, hyperflow intercooler. I set up an apointment to get tuned on monday. Hopefully I can take care of it before anything bad happens.
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Old 02-03-2005, 03:55 PM
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By reducing all that backpressure it's normal to get more boost. Getting tuned will solve your issues however.
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Old 02-03-2005, 08:29 PM
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cool, thanks for the help. i'm getting tuned on monday
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Old 02-04-2005, 01:10 AM
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Resetting your ECU will likely solve the overboosting problem. You might still experience a slight boost spike, but it the ECU should keep it inline after a reset.

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Old 02-04-2005, 05:41 AM
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Actually, the overboosting occured after I reset the ECU. It just hasn't figured it out yet I guess.
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Old 02-08-2005, 04:25 PM
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got the car tuned!
Attached Thumbnails Overboosting?-newdyno1.jpg  
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Old 02-08-2005, 05:16 PM
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That dyno is rather "optimistic" but the curve looks good.
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Old 02-08-2005, 05:31 PM
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would do you mean?
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