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Old 05-15-2003, 07:36 AM   #1
orndog
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Member#: 34670
Join Date: Mar 2003
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2013 No gears!
Saltine American

Default PDM-Racing intake

So I installed it and a K&N filter. I left the negative cable off the battery during the whole installation. When I first started it up, it gasped a bit, then settled into a nice idle. It sounds really nice. However, below 2500 RPM, it feels like I've lost my balls! I thought designs that preserved the stock intake box kept low-end torque? This pipe is just like the Ganzflow. Anybody else have this prob?
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Old 05-15-2003, 11:10 AM   #2
live311
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make sure your airbox is completely closed. You may not have sealed it properly when you put the filter in. If that's not it, just drive like a maniac for a couple hundred miles until your ECU relearsn everything. That should take care of it.
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Old 05-15-2003, 11:44 AM   #3
codger
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I found it an improvement on the low end. Less jerky in stop and go traffic, like when you take your foot off the gas idling along in first, and your passenger's head bobs forward. Much smoother now. And typically I spend very little time below 2500. Launch at 1500, shift anywhere from 3000 to 5000, generally keep it in range 2500 to 3500.

Jim
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Old 05-15-2003, 04:09 PM   #4
orndog
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"server too busy"
sheesh, lost everything I typed.
Anyway, thanks for the advice, I'm going to go flog her a bit
I know the filter box is sealed, I removed it to install the K&N. Also, I notice it's smoother too, but I think it's because I have no throttle response down low.
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Old 05-16-2003, 12:21 AM   #5
codger
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I hated that low RPM throttle response - especially first gear on bumpy broken roads. The bumps would get me bouncing in the seat, my foot lifting off the pedal a bit, and then the car jerks and bucks. Much much better now.
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Old 05-16-2003, 11:50 AM   #6
obsrules
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I have had my PDM installed on my 2002 OBS A/T for about 5 months now. Recently, when I first start my car in the morning and start to move, the car severely hesitates and feels like it might stall and then it jerks and all my throttle response comes back. It only happens when the car isn't warmed up and it only started a week ago. Is this more of a symptom of clogged CAI/filter or possibly transmission? Thanks.
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Old 05-16-2003, 02:19 PM   #7
goobie
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Default ECU need to learn how to use new air flow

Quote:
I left the negative cable off the battery during the whole installation. When I first started it up, it gasped a bit, then settled into a nice idle. It sounds really nice. However, below 2500 RPM, it feels like I've lost my balls!
Since you disconnected the battery, I thinking the ECU has been reset. Did you follow the "NASIOC generally accepted procedures" for re-programming the ECU? If not, give this a try.

1. Disconnect Battery again for 20-30 minutes
2. Wash Car, Clean garage (do whatever for those 20-30 minutes)
3. Hook battery back up and (get ready for alarm to go off, if you have one)
4. Start car, DO NOT TOUCH THE GAS!. The car might die on the first start, if so, restart.
5. Let car idle for 15-20 mins (or until electric cooling fans kick-in)
6. Shut the car down.
7. Restart, go for a "spirited" drive brinning the engine to redline serveral times.

The ECU should learn how to effectivly use that added airflow quickly this way.

Chad
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Old 05-16-2003, 05:57 PM   #8
orndog
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Default Re: ECU need to learn how to use new air flow

Quote:
Originally posted by goobie



1. Disconnect Battery again for 20-30 minutes
2. Wash Car, Clean garage (do whatever for those 20-30 minutes)
3. Hook battery back up and (get ready for alarm to go off, if you have one)
4. Start car, DO NOT TOUCH THE GAS!. The car might die on the first start, if so, restart.
5. Let car idle for 15-20 mins (or until electric cooling fans kick-in)
6. Shut the car down.
7. Restart, go for a "spirited" drive brinning the engine to redline serveral times.

The ECU should learn how to effectivly use that added airflow quickly this way.

Chad
And if it doesn't, I sure had fun trying!!!
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Old 05-16-2003, 09:02 PM   #9
goobie
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Yeah it's bit of a hassle but it works!
Do a search on "ECU Reset" for more info.

Cheers,
Chad
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Old 05-17-2003, 12:18 PM   #10
orndog
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If I had a garage - or didn't live in West Tennessee (will it EVER stop raining?), I would try this. *sigh*
You're right, though, a run to the redline is much smoother now.
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