Just got a ZZP 3" Dowpipe and 3" high flow cat installed. - Page 3 - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

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Just got a ZZP 3" Dowpipe and 3" high flow cat installed.

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Old 07-17-2009, 02:03 PM
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I wasn't really pushing a PEM, I was showing how restrictive a stock manifold is.
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Old 07-17-2009, 02:32 PM
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I know Dan. My mention was to try to help him not jump at a pem next, because for some odd reason ZZP was talking him out of the PLog.
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Old 07-17-2009, 02:44 PM
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Personally, I say find a set of used TOGs or SLP headers, they go for about $450 to $500. A Plog is OK, but I've seen to many cracked ones.
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Old 07-17-2009, 11:39 PM
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If i do get headers. will they work with my zzp downpipe which also has the high flow cat built in?
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Old 07-17-2009, 11:42 PM
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That will depend on the headers. I believe pacesetters bolt in to the stock points. TOGs use a shorter downpipe. Not sure on the SLP.
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Old 07-17-2009, 11:48 PM
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So pacesetters will work, anybody know of any else that will work with my zzp downpipe & hi-flo.

Also danthurs do you know what the average price for installation of headers is in ashop?
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Old 07-17-2009, 11:53 PM
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I think purplehaiezer had his installed. I do all my own work, so I have no clue what a shop would charge.
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Old 07-18-2009, 12:04 AM
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What exactly is the difference between a PEM and Plog?

Also, is their a big difference in powergain and sound between a Plog and Headers?
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Old 07-18-2009, 12:07 AM
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PEMs are stock manifolds that are opened up a bit. They are better then stock, but only a little. A Plog is much better then PEMs. Headers are the best choice. Pacesetters are on the low end with SLP and TOGs higher up on the performance scale. As for sound, each setup will be different. The more open the exhuast the deeper the tone will be.
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Old 07-18-2009, 12:13 AM
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So if i got headers, my exhaust will pretty much be complete right? Downpipe, high flow cat and headers. Is there anything else i could add besides mufflers that would make it louder/flow better?
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