LAck of Power at 2500rpm

Posts specific to the 2.5 litre turbo engine

LAck of Power at 2500rpm

Postby Russ tiger » Sun Feb 26, 2017 3:20 pm

Hi all,

My car is a MY08 Liberty GT Tuned by STi running an EJ 2.5L Turbo with 6 Speed manual.

For the past couple of months I have been having problems that when I get to about 2500rpm in any gear, it seems to pause with nil power until i hit 3000 rpm
and then it goes hard. As long as I keep the revs above 3000rpm there are no problems.

But here is the kicker, when this happens, I pull over, reset the ECU and then this issue goes away......until it returns. Then we do it again.

Does anyone have any ideas please? I thought maybe a turbo issue or a vacuum hose?

Thank you
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Russ tiger
Posts: 9
Joined: Sat Jul 20, 2013 8:47 pm
Location: Sutherland Shire NSW
Car: MY08 Liberty GT-B STi #076/250
Real name: Michael

Re: LAck of Power at 2500rpm

Postby norbs » Sun Feb 26, 2017 8:22 pm

Sounds like it's pulled timing.Reseting ECU clears IAM and FLKC table hence why it goes good for a while. I suggest don't do this till you get it looked at. Get someone with a logging tool to look at it.
'05 Lib GT with a few mods :-)
Posts: 363
Joined: Mon Oct 09, 2006 2:11 pm
Location: Melbourne

Re: LAck of Power at 2500rpm

Postby vinshonz » Mon Feb 27, 2017 2:58 pm

if its stock

i suggest you get it retuned

the stock sti tunes are really bad
2008 Liberty GT Tuned by STi 27 of 250 made
PnP VF52, AVO TBE into STi mufflers, AVO panel filter, Mishimoto TMIC, Turbosmart Kompact BOV, Kobe Silicone Intake + SFB, Kobe 340LPH pump,
Tuspeed 3Port, Exedy HD + lightened flywheel, some Whiteline bits & Corgiwerx bits - KiDo tuned

2007 WRX Tuned by STi 35 of 200 made
STi Spec C TMIC+ProcessWest splitter, AVO TBE, X3E Silicone Intake, APS CAI, TurboSmart Kompact, Walbro, GrimmSpeed 3 Port, DEFI gauges
TD05-18G 198.5kw on RTRs Dyno - SOLD
Posts: 201
Joined: Tue Mar 22, 2016 6:53 am
Location: SE MELB
Car: 2008 Liberty GT TunedBySTi
Real name: Vincent

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