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What can i do to improve my 3.8 in performance

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Old 03-13-2012, 01:51 AM
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Default What can i do to improve my 3.8 in performance

2004 SS Monte Carlo What would be the best set of headers to buy for my 3.8 Monte and what are the best sounding mufflers to put on it for a V6. Any other ideas would be great!Thanks, Brent
 
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Old 03-13-2012, 04:33 AM
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Welcome to the Monte Carlo Forum(s)!

Click here ----> https://montecarloforum.com/forum/he...n-3800s-10942/


I think you will find most will point you TWDS a PLOG for the front header, & a downpipe with a "u-bend" delete. I have read a lot on here about Speed Daddy's headers, ... as well as Pace Setter's.

I have a 03 SS, & I a 2.5" downpipe w/ cat &u-delete & Flowmaster Super 44's out the back ready to go on within the next few weeks as I roll it out of storage. Sometime during the summer I will do the PLOG mod.
 
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Old 03-13-2012, 02:35 PM
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Yeah, I was wondering if i should do that or not. Is there a big difference with the U bend delete and down pipe? I have a few thing to do once i pull it out of storage at the end of April. whats the PLOG mod?
 
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Old 03-13-2012, 02:41 PM
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ZZP Powerlogs(Plog) have cracked before so I'd say go with Speed Daddy headers. Can get them for around $200 shipped on eBay. They eliminate the cat and you might as well delete the egr while you're at it. That's what I did. It eliminates U bend with the headers. You can order EGR block off plates from zzp.
 
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Old 03-13-2012, 02:43 PM
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PLOG = Powerlog it's a replacement to the front exhaust manifold, which is (besides the downpipe) the biggest restriction in the exhaust.
 
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Old 03-13-2012, 02:48 PM
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If i got and delete the Ubend, then what do i do with the O2 sensor?
 
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Old 03-13-2012, 02:52 PM
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Originally Posted by 641montecarloSS View Post
If i got and delete the Ubend, then what do i do with the O2 sensor?
ZZP sells an o2 extension which is needed for header install.

Here's proof of cracked PLOG which I'd stay away from lol....

 
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Old 03-13-2012, 02:58 PM
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If you're serious about doing header install I'd recommend these to go with...

- O2 Extension Harness #

ZZPerformance - Stainless Exhaust Clamps #ZZ-SECLMP

ZZPerformance - EGR Block Off Plate #

You will for sure need both block off plates if you delete EGR. And I would go with Two 2.5" clamps and Two 3" clamps because the clamps that come with Speed Daddy headers tend to crush the pipe which I didn't feel comfortable with. And the o2 extension is a must as well..
 
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Old 03-13-2012, 03:03 PM
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Originally Posted by 641montecarloSS View Post
If i got and delete the Ubend, then what do i do with the O2 sensor?
The ZZP downpipe w/U-bend delete has bung for O2 sensor.
 
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Old 03-13-2012, 03:08 PM
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