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03-03-2004, 01:05 AM | #1 |
Scooby Newbie
Member#: 50202
Join Date: Dec 2003
Location: El Paso Texas
Vehicle:2006 STi Black |
RPM spike
I've had my '04 Subie for 4 months and 4500 miles. I have a borla hush sysytem w/ high flow cat in last cat position, tbxs manual boost controller (set at 14 psi w/ boost gauge), forge blow off valve, and helix uppipe. The problem is that my RPM's keep on spiking 200-350 RPM b/t the 2-3 and 3-4 upshift. I know the engine runs rich with a 100% atm bov. Is this the reason or what? Thanx
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03-03-2004, 06:38 AM | #2 |
Big Ron
Super Moderator Member#: 18062
Join Date: Apr 2002
Chapter/Region:
MAIC
Location: I can save you a ton of cash
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It's normal, get used to it. There are 50,000 reasons why it does it, but the most commonly known one is the engine revs after shift to burn off extra fuel for lower emissions caused by the upshift.
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03-03-2004, 01:11 PM | #3 |
Scooby Newbie
Member#: 50202
Join Date: Dec 2003
Location: El Paso Texas
Vehicle:2006 STi Black |
Thats all I needed to hear Thanx alot.
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03-03-2004, 02:01 PM | #4 |
Scooby Guru
Member#: 42549
Join Date: Aug 2003
Chapter/Region:
Tri-State
Location: You can find me in the 203
Vehicle:E92 M3 B9 Audi SQ5 |
Any problem with Open/closed loop sensor?
Supposedly running a TBE and MBC will cause problems with 04, though it is fixable with reflash... |
03-03-2004, 10:57 PM | #5 |
Scooby Specialist
Member#: 35004
Join Date: Apr 2003
Chapter/Region:
TXIC
Location: Dallas
Vehicle:88 __/ ] \_/ . -o-----o- ///M5 |
Does it happen when you get it above 5k rpm at wot?
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03-03-2004, 10:59 PM | #6 |
Scooby Newbie
Member#: 30825
Join Date: Dec 2002
Location: North Hollywood, CA~818
Vehicle:2004 EVO V/// (8) MIA sfVoltron MeMb3R |
I have an 02 with a Borla Hush, a Bosal DP etc etc ..
Does the same thing .. Its common and in the 20+ Subaru's I've been in they all do it ... Dont need to fret ... |
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