H-Pipe Question

posied88 · 11-01-2001, 05:07 PM

When I installed my Mac H-Pipe a couple of weeks ago i realized i didnt have an O2 hose in my stock H-pipe w/cats. A freind said it wouldn' hurt to leave it open, but ever since my car has had a really messed up idle. My idle will drop and come back up when I'm stopped w/ the clutch in or right after i get on it and put the clutch in. So I was wondering if that could be part of the problem or maybe dirty TPS or what? Thanx for any replies.

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3.55 gears,posi,mac 1 5/8 shorties,off-road h-pipe,w/flowmasters,bbk 65mm throttle body,frpp aluminum driveshaft,frpp b303 cam,hurst short throw shifter.

Unit 5302 · 11-01-2001, 08:20 PM

Plug the hole. See if it helps at all. If not, you may have a problem with the exhaust gas velocity being to high for the O2 sensor to properly read. Do a search for Rebel79's Off Road H Pipe Fix.

posied88 · 11-03-2001, 01:38 AM

Thanx Unit. I'll post what happens when i plug the hole. If thats not it what would be an easy way to check my exhaust gas velocity? Thanx again fir your reply. Later,
Will

------------------
3.55 gears,posi,mac 1 5/8 shorties,off-road h-pipe,w/flowmasters,bbk 65mm throttle body,frpp aluminum driveshaft,frpp b303 cam,hurst short throw shifter.

11-01-2001, 05:07 PM	#1
posied88 Registered Member Join Date: Aug 2001 Location: Anaheim, Ca. Posts: 31	H-Pipe Question When I installed my Mac H-Pipe a couple of weeks ago i realized i didnt have an O2 hose in my stock H-pipe w/cats. A freind said it wouldn' hurt to leave it open, but ever since my car has had a really messed up idle. My idle will drop and come back up when I'm stopped w/ the clutch in or right after i get on it and put the clutch in. So I was wondering if that could be part of the problem or maybe dirty TPS or what? Thanx for any replies. ------------------ 3.55 gears,posi,mac 1 5/8 shorties,off-road h-pipe,w/flowmasters,bbk 65mm throttle body,frpp aluminum driveshaft,frpp b303 cam,hurst short throw shifter.

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11-01-2001, 08:20 PM	#2
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Plug the hole. See if it helps at all. If not, you may have a problem with the exhaust gas velocity being to high for the O2 sensor to properly read. Do a search for Rebel79's Off Road H Pipe Fix.

11-03-2001, 01:38 AM	#3
posied88 Registered Member Join Date: Aug 2001 Location: Anaheim, Ca. Posts: 31	Thanx Unit. I'll post what happens when i plug the hole. If thats not it what would be an easy way to check my exhaust gas velocity? Thanx again fir your reply. Later, Will ------------------ 3.55 gears,posi,mac 1 5/8 shorties,off-road h-pipe,w/flowmasters,bbk 65mm throttle body,frpp aluminum driveshaft,frpp b303 cam,hurst short throw shifter.