Inconsistent Performance, anyone know why?
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Inconsistent Performance, anyone know why?
Hi there,
Hello to everyone. This is my first post in this forum although I have had my WRX for almost 5 months now.
My rex is basically catless (see my mods below), and during these days I noticed inconsistent performance due to the weather changes.
During nite time (ambient temp ~ 50F), my car pulls pretty strong after the boost builds up from 5 psi and up. But during daytime, where outside temperature sometimes can go up to 70 these days, the car's performance is more like a NA car, where I can't feel the pull anymore (although it still goes quite fast). Even sometimes when I can feel the pull, the boost has to be somewhere around 10 psi and up before the the "pull" reappears.
I have been told that once you have the catless uppipe, you wont feel that strong pull all at a sudden like before, since the boost will build up more quickly. But is that normal the car simply feels like a NA with no pull but go fast?
Does anyone here experienced the same situation as I described above (especially people with catless uppipe) as the weather gets warmer? I m a bit concerned.
Hello to everyone. This is my first post in this forum although I have had my WRX for almost 5 months now.
My rex is basically catless (see my mods below), and during these days I noticed inconsistent performance due to the weather changes.
During nite time (ambient temp ~ 50F), my car pulls pretty strong after the boost builds up from 5 psi and up. But during daytime, where outside temperature sometimes can go up to 70 these days, the car's performance is more like a NA car, where I can't feel the pull anymore (although it still goes quite fast). Even sometimes when I can feel the pull, the boost has to be somewhere around 10 psi and up before the the "pull" reappears.
I have been told that once you have the catless uppipe, you wont feel that strong pull all at a sudden like before, since the boost will build up more quickly. But is that normal the car simply feels like a NA with no pull but go fast?
Does anyone here experienced the same situation as I described above (especially people with catless uppipe) as the weather gets warmer? I m a bit concerned.
Last edited by skylinesf; Apr 6, 2003 at 09:48 PM.
Registered User
Joined: Nov 2002
Posts: 1,780
From: San Diego
Car Info: Boosted Geo Prizm
Colder air is more dense thus giving you more power. It's pretty common for the car to be 'laggier' on hot days. Thats where larger intercoolers and/or water sprayers come in handy.
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The Uppipe issue
Thanks guys.. But I m more concerned to the fact that my car is feeling more like a NA car now (especially when the weather is warm).
I know less laggy is good. But I feel kinda weird that the car didnt pull like one with a turbo anymore after the uppipe install.
Maybe the stock turbo + uppipe combination makes me feel this way. My friend's WRX, which has uppipe and VF 29 feels totally different than mine. His turbo won't spool up before 3500 rpm, but once it spools up, that feeling is wonderful.
SkylineSF
My car: 03 Silver WRX 5-speed Performance upgrades: Perrin uppipe, Helix downpipe, Blitz Catback, Samco intercooler hoses, Vishnu ECUTEK reflash, Greddy E01 EBC.
Wheels & tires: 17 x 8.5 Advan RCII with 225/45R17 Azenis
I know less laggy is good. But I feel kinda weird that the car didnt pull like one with a turbo anymore after the uppipe install.
Maybe the stock turbo + uppipe combination makes me feel this way. My friend's WRX, which has uppipe and VF 29 feels totally different than mine. His turbo won't spool up before 3500 rpm, but once it spools up, that feeling is wonderful.
SkylineSF
My car: 03 Silver WRX 5-speed Performance upgrades: Perrin uppipe, Helix downpipe, Blitz Catback, Samco intercooler hoses, Vishnu ECUTEK reflash, Greddy E01 EBC.
Wheels & tires: 17 x 8.5 Advan RCII with 225/45R17 Azenis
Registered User
iTrader: (7)
Joined: Dec 2002
Posts: 10,029
From: Sacramento CA
Car Info: 02 Impreza WRX sedan
Originally posted by skylinesf
My car: 03 Silver WRX 5-speed Performance upgrades: Perrin uppipe, Helix downpipe, Blitz Catback, Samco intercooler hoses, Vishnu ECUTEK reflash, Greddy E01 EBC.
Wheels & tires: 17 x 8.5 Advan RCII with 225/45R17 Azenis
It's those Falkens.
Did you get the re-flash after the exhaust mods? If so, what happens if you take the EBC out of the loop and let the factory boost control take over?
--
0==WW==0
"…axles of evil…" - george w. bush
My car: 03 Silver WRX 5-speed Performance upgrades: Perrin uppipe, Helix downpipe, Blitz Catback, Samco intercooler hoses, Vishnu ECUTEK reflash, Greddy E01 EBC.
Wheels & tires: 17 x 8.5 Advan RCII with 225/45R17 Azenis
It's those Falkens.
Did you get the re-flash after the exhaust mods? If so, what happens if you take the EBC out of the loop and let the factory boost control take over?
--
0==WW==0
"…axles of evil…" - george w. bush
Guest
Posts: n/a
No I havent taken the EBC out of the loop yet.
Can anyone show me some images on how to re-reoute the wastegate back to the stock boost control? Your input is greatly appreciated.
Thanks.
SkylineSF
My car: 03 Silver WRX 5-speed
Performance upgrades: Perrin uppipe, Helix downpipe, Blitz Catback, Samco intercooler hoses, Vishnu ECUTEK reflash, Greddy E01 EBC.
Wheels & tires: 17 x 8.5 Advan RCII with 225/45R17 Azenis
Can anyone show me some images on how to re-reoute the wastegate back to the stock boost control? Your input is greatly appreciated.
Thanks.
SkylineSF
My car: 03 Silver WRX 5-speed
Performance upgrades: Perrin uppipe, Helix downpipe, Blitz Catback, Samco intercooler hoses, Vishnu ECUTEK reflash, Greddy E01 EBC.
Wheels & tires: 17 x 8.5 Advan RCII with 225/45R17 Azenis
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