newbie with question concerning boost fluttering

jsBLwrx · 11-11-2012, 06:15 PM

Hi all, newbie here

l have a 2013 opb sedan with 1200 miles on the odo.

Bought the car with seven miles on the odo and had been driven the car under 4k rpm for the break-in period

Today, l've wanted to see how much boost the turbo is generating and did a couple of slightly less than pedal to the floor acceleration on the second gear. This is what I've observed and concerns me:

Between 4500-5200rpm: boost appeared to settle at 10lbs

Then the needle on the boost gauge fluttered wildly between 13-16lbs when the engine rpm was around 552-5800rpm

The car is bone stock and it's a limited pkg that was equipped with the SPT boost gauge, the STS and the SPT axle-backs

So, what gives? Thanks folks

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SplatWRX · 11-15-2012, 10:55 PM

Your wasting your time with 2nd gear. Unless your tuned to make boost in 2nd, it wont. Your getting 10lbs of boost because thats wastegate spring pressure. Try in 3rd or 4th gear.

RoadKillDMD · 11-15-2012, 11:03 PM

....... This sounds familiar :cough: http://forums.nasioc.com/forums/show....php?t=2431132 :cough:

Read rule #8 n00000b!

http://forums.nasioc.com/forums/showthread.php?t=396737

11-11-2012, 06:15 PM	#1
jsBLwrx Scooby Newbie Member#: 336744 Join Date: Nov 2012 Chapter/Region: MAIC	newbie with question concerning boost fluttering Hi all, newbie here l have a 2013 opb sedan with 1200 miles on the odo. Bought the car with seven miles on the odo and had been driven the car under 4k rpm for the break-in period Today, l've wanted to see how much boost the turbo is generating and did a couple of slightly less than pedal to the floor acceleration on the second gear. This is what I've observed and concerns me: Between 4500-5200rpm: boost appeared to settle at 10lbs Then the needle on the boost gauge fluttered wildly between 13-16lbs when the engine rpm was around 552-5800rpm The car is bone stock and it's a limited pkg that was equipped with the SPT boost gauge, the STS and the SPT axle-backs So, what gives? Thanks folks * Registered users of the site do not see these ads.

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11-15-2012, 10:55 PM	#2
SplatWRX Scooby Specialist Member#: 85932 Join Date: Apr 2005 Chapter/Region: MWSOC Location: Cincinnati's West Side Vehicle: 2005 STi / 2013 STi 2005 Forester XTi	Your wasting your time with 2nd gear. Unless your tuned to make boost in 2nd, it wont. Your getting 10lbs of boost because thats wastegate spring pressure. Try in 3rd or 4th gear.

11-15-2012, 11:03 PM	#3
RoadKillDMD Scooby Specialist Member#: 284792 Join Date: Jun 2011 Chapter/Region: RMIC Location: Vanilla Valley, CO Vehicle: 2011 STI Plasma Blue Pearl	....... This sounds familiar :cough: http://forums.nasioc.com/forums/show....php?t=2431132 :cough: Read rule #8 n00000b! http://forums.nasioc.com/forums/showthread.php?t=396737