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Old 03-28-2004, 10:19 PM   #1
ClimbinNBouldern
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Member#: 50108
Join Date: Dec 2003
Location: Mt. Airy MD and Hamilton NY
Vehicle:
2000 2.5RS
BRP

Default dead spot?

after installing my exhaust (stromung cat back) about 2 weeks ago i seem to have a dead spot in my acceleration.
this only is noticeably to me in 2nd and 3rd gears, the engine seems to rev slower from approximatley 3500rpm - 4500 rpm and then pulls hard again. Only noticebale under 1/2 throttle to WOT. Any ideas?

Thanks,
Tom

p.s. i plan to install an underdrive pulley soon along with my CAI whenever they are off backorder. will this help at all?
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Old 03-28-2004, 11:00 PM   #2
munkis
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Default

the dead spot is common. Just more amplified with mods.

You can try doing a grounding mod to see if it helps to clear it up.

Did you reset the ECU when you put the exhaust on?

Jay
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Old 03-28-2004, 11:25 PM   #3
ClimbinNBouldern
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I already have a Grounding mod (just forgot to mention)
I though ti reset my ECU (stepped on brakes), but am not sure now
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Old 03-29-2004, 02:53 PM   #4
obyone
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Quote:
Originally posted by McDade
the dead spot is common. Just more amplified with mods.

You can try doing a grounding mod to see if it helps to clear it up.

Did you reset the ECU when you put the exhaust on?

Jay
If I'm not mistaken, it's an issue with the design of the intake manifold. Supposedly, at those RPM range, the manifold has some kind of funky reverberation that causes the dip in torque.
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Old 03-29-2004, 04:37 PM   #5
m750
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I think it's the exhaust, as I don't notice it with the mrt headers + high flo cat.
AO
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Old 03-29-2004, 09:57 PM   #6
obyone
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Quote:
Originally posted by m750
I think it's the exhaust, as I don't notice it with the mrt headers + high flo cat.
AO
Not that my friend as I have the MRT header with high flow cat and I still get it in the midrange. It almost feels like my car mis-fired in 1-2 cylinders. Thats how noticable the power loss is.
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Old 03-30-2004, 12:02 AM   #7
Ghomer1
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Yeah - I have it too. WRX cat-back, Borla headers......I've just accepted it by now!!

Garret
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