Commonly Asked Performance Questions!!
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Dannyg420
- SLE Member

- Posts: 63
- Joined: Sun Dec 09, 2012 4:20 pm
- Year and Trim: 2003 Bonneville SE
- Location: Chicago, IL
Re: Commonly Asked Performance Questions!!
Whats better for my Non suprrcharged the zzp 3inch (they dont have 2.5in on website anymore) downpipe with hiflow cat for $220 or 3800 performance 3in downpipe with hiflow magnaflow cat for $320

2003 Bonneville SE.....Intense Fenderwell intake....Magnaflow mufflers....glasspack resonator....grand prix wheels....rear 5% limo tint front 18% tint......Kenwood Headunit....mb quart tweeters,doors, 6x9s powered by autotek 1400 watt 4channel amp.....2 12in Alpine Type Rs 1000rms each powered by 1500 rms Mb quart mono RA1500.1
- FasGP
- GXP Member

- Posts: 242
- Joined: Fri Dec 09, 2011 9:40 pm
- Year and Trim: Pullied Clean 2k Black SSEi...
- Location: Forks of the Credit, Ontario
Re: Commonly Asked Performance Questions!!
The 2.5" is best for your NA application. I see them listed today on the ZZP site..??Dannyg420 wrote:Whats better for my Non suprrcharged the zzp 3inch (they dont have 2.5in on website anymore) downpipe with hiflow cat for $220 or 3800 performance 3in downpipe with hiflow magnaflow cat for $320
Magnaflow cat flows a bit better, but I have never thought it was worth it to spend an extra $100 on a useless piece of emissions. Others may have differring opinions, but that's my thoughts. If you are going to go 3", go the cheaper route.
2000 SSEi - Hoddmann ported LIM and GenIII, 3.2 MPS, 1.8 SLP's, SSAC's, 3" Catback, AL104, 180tstat, Custom FWI, Cartuned
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Dannyg420
- SLE Member

- Posts: 63
- Joined: Sun Dec 09, 2012 4:20 pm
- Year and Trim: 2003 Bonneville SE
- Location: Chicago, IL
Re: Commonly Asked Performance Questions!!
Ok thanks and i didnt see them on zzp for the H-body

2003 Bonneville SE.....Intense Fenderwell intake....Magnaflow mufflers....glasspack resonator....grand prix wheels....rear 5% limo tint front 18% tint......Kenwood Headunit....mb quart tweeters,doors, 6x9s powered by autotek 1400 watt 4channel amp.....2 12in Alpine Type Rs 1000rms each powered by 1500 rms Mb quart mono RA1500.1
Re: Commonly Asked Performance Questions!!
I know this is an older sticky but I just have to say that this is an amazing write up for the vehicles.
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Plain Jane
- LE Member
- Posts: 9
- Joined: Sat Jul 26, 2014 4:01 pm
- Year and Trim: 1986, LE 3800
Re: Commonly Asked Performance Questions!!
Pretty good write up I must say. I would like some more info on older generation engines, as I drive an '86 carb'd 3800 that desperately needs power. What are my options?
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00Beast
- Retired Site Developer

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Re: Commonly Asked Performance Questions!!
I am terribly unfamiliar with those engines. Not really sure there has ever been much aftermarket for them.
Bye Bye:

RIP sandrock

RIP sandrock
Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
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Plain Jane
- LE Member
- Posts: 9
- Joined: Sat Jul 26, 2014 4:01 pm
- Year and Trim: 1986, LE 3800
Re: Commonly Asked Performance Questions!!
I didn't expect there to be much. I guess an engine swap would be the only real alternative?
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Plain Jane
- LE Member
- Posts: 9
- Joined: Sat Jul 26, 2014 4:01 pm
- Year and Trim: 1986, LE 3800
Re: Commonly Asked Performance Questions!!
Any ideas? Maybe a carb kit or header-back?
Or drop in a 350 and call it a day?
Or drop in a 350 and call it a day?
- nos4blood70
- Certified Bonneville Nut

- Posts: 9522
- Joined: Mon May 10, 2010 6:11 pm
- Year and Trim: 2003 SLE
- Location: Chicago, IL
Re: Commonly Asked Performance Questions!!
You won't make any kind of power from that old 3.8, I'm guessing. Easiest way to go about it would be to swap in a 350.
Re: Commonly Asked Performance Questions!!
Hope this is the right section to post this question but with the F body brake upgrade on my 2002 SSEI can the stock lines be retained or will I need custom lines made?



