Lack of power, can't figure out why (Supercharged, EcuTek) - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

EquiFox · 06-13-2015, 01:06 PM

So yeah the car started doing this a few weeks ago.

I could feel that it had a tiny bit less of power, I thought it could be caused by the gas I used at that time but no.

Now the car just feel like stock... Between 1500-2000 to 4000 approx RPM it doesnt do shit. I have 286 whp (well had) and I know something is going wrong. Before you ask, I use Shell VPower (91) gas, since its the highest we have here.

I don't know a lot, so maybe someone could help me out and chime in.

At first I thought it could be related to my Borla UEL (Had a lot of issues with those), so I switched to JDL and same thing. Atleast I got better headers now.

Also, I noticed that I have a lot of black residue on my exhaust tips now, I never had anything like that before. I cleaned it and it came back pretty quick.

Here is a log from yesterday (Standard city / highway driving)
http://www.datazap.me/u/equifox/longer-run?log=0

Thanks all !

Fastbrew · 06-13-2015, 02:23 PM

Check to see if your intake hose is clamped down tight and everything else in the intake path. Check for leaks with a smoke test everywhere.

Also - there is some rubber hosing around the purge solenoid valve that might be loose.

Just a couple of ideas of easy to check ideas - good luck.

ryoma · 06-13-2015, 03:57 PM

how much boost are you running with the SC? you might have a leak somewhere like the person above said

EquiFox · 06-13-2015, 07:45 PM

Im using the low boost pulley so around 9-10 psi I would say.

billwot · 06-13-2015, 07:56 PM

Quote:

Originally Posted by EquiFox

Im using the low boost pulley so around 9-10 psi I would say.

So you don't have a boost gauge? So that means you really have no idea what the SC is putting out.

Based on the sxs you describe, I would guess your sc is not actually pumping.

Vroomin86 · 06-13-2015, 08:25 PM

yea ......................................... a boost gauge would help.

Bigmaxy · 06-13-2015, 08:34 PM

Looking at your chart. You are not making any boost.
And you are getting some knock correction.

Jcl · 06-13-2015, 09:48 PM

Boost leak anywhere? When I first had my kit installed the clamps werent all tight and you could feel the difference right away.

Sent from my iPhone using Tapatalk

06-13-2015, 01:06 PM	#1
EquiFox Member Join Date: Jul 2014 Drives: 2014 FRS Firestorm Location: Canada Posts: 57 Thanks: 4 Thanked 5 Times in 5 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Lack of power, can't figure out why (Supercharged, EcuTek) So yeah the car started doing this a few weeks ago. I could feel that it had a tiny bit less of power, I thought it could be caused by the gas I used at that time but no. Now the car just feel like stock... Between 1500-2000 to 4000 approx RPM it doesnt do shit. I have 286 whp (well had) and I know something is going wrong. Before you ask, I use Shell VPower (91) gas, since its the highest we have here. I don't know a lot, so maybe someone could help me out and chime in. At first I thought it could be related to my Borla UEL (Had a lot of issues with those), so I switched to JDL and same thing. Atleast I got better headers now. Also, I noticed that I have a lot of black residue on my exhaust tips now, I never had anything like that before. I cleaned it and it came back pretty quick. Here is a log from yesterday (Standard city / highway driving) http://www.datazap.me/u/equifox/longer-run?log=0 Thanks all !

06-13-2015, 03:57 PM	#3
ryoma Senior Member Join Date: Mar 2015 Drives: 2015 Subaru BRZ Limited CWP Location: SoCal Posts: 1,561 Thanks: 34 Thanked 669 Times in 469 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	how much boost are you running with the SC? you might have a leak somewhere like the person above said __________________ My 2015 CWP BRZ Build

06-13-2015, 08:25 PM	#6
Vroomin86 Senior Member Join Date: Mar 2015 Drives: 2015 Fire Location: South FLo-Rida Posts: 447 Thanks: 264 Thanked 168 Times in 106 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	yea ......................................... a boost gauge would help. __________________ 2015 FireStorm FRS HT Auto / TRD / Toms / FA 500 / Valenti / SPC / OFT / Borla / Flossy / Vigilant Motorsports / To be continued...

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06-13-2015, 02:23 PM	#2
Fastbrew Senior Member Join Date: Apr 2014 Drives: 2014 Pearl White BRZ Location: USA Posts: 764 Thanks: 123 Thanked 461 Times in 233 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Check to see if your intake hose is clamped down tight and everything else in the intake path. Check for leaks with a smoke test everywhere. Also - there is some rubber hosing around the purge solenoid valve that might be loose. Just a couple of ideas of easy to check ideas - good luck.

06-13-2015, 07:45 PM	#4
EquiFox Member Join Date: Jul 2014 Drives: 2014 FRS Firestorm Location: Canada Posts: 57 Thanks: 4 Thanked 5 Times in 5 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Im using the low boost pulley so around 9-10 psi I would say.

06-13-2015, 08:34 PM	#7
Bigmaxy Senior Member Join Date: Aug 2012 Drives: Pegasus GTS86 Location: Aus Posts: 119 Thanks: 67 Thanked 28 Times in 20 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Looking at your chart. You are not making any boost. And you are getting some knock correction.

06-13-2015, 09:48 PM	#8
Jcl Senior Member Join Date: Feb 2014 Drives: 2014 BRZ Location: Alberta, Canada Posts: 189 Thanks: 19 Thanked 23 Times in 17 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Boost leak anywhere? When I first had my kit installed the clamps werent all tight and you could feel the difference right away. Sent from my iPhone using Tapatalk

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