Thread: Borla XR1 Muffeler and no Res?

I would never run without a resonator on a 3800 it's gonna sound like poo. Your not gonna notice much of a gain going from your current setup to a 3" unless your going all out where your maxing **** out


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Originally Posted by REDCRAPGP

I would never run without a resonator on a 3800 it's gonna sound like poo. Your not gonna notice much of a gain going from your current setup to a 3" unless your going all out where your maxing **** out


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^^^
Res with muffs sounds great with headers on a 3800. You can't get a V6 to sound like a V8, no matter how much you wish - I know, I tried. lol

Originally Posted by Kaiser Pontiac

^^^
Res with muffs sounds great with headers on a 3800. You can't get a V6 to sound like a V8, no matter how much you wish - I know, I tried. lol

What exactly does a resonator do? I have a camed/supercharged 3800 with slp headers and slp catback with no resonator or catalytic converter I do know what you mean you can't get it to sound like a v8 but it sounds good it has a deeper rumble to it. It does have a raspy sound when you get on it and let off quick or rev it real high not under load but it's a v6 I've come to the conclusion that there is nothing I can do about it.

Originally Posted by Tonkin2000GT

What exactly does a resonator do? I have a camed/supercharged 3800 with slp headers and slp catback with no resonator or catalytic converter I do know what you mean you can't get it to sound like a v8 but it sounds good it has a deeper rumble to it. It does have a raspy sound when you get on it and let off quick or rev it real high not under load but it's a v6 I've come to the conclusion that there is nothing I can do about it.

When I found out my muffs were rusted out I thought I'd do some research around the web. From what I read the resonator, the longer the better, helps reduce drone from the exhaust if you have no cat.

I don't have a cat (or a cat-back for that matter), and I figured for the right price I should just do a res while I'm hacking up a couple exhausts because drone is bleh, and these cars you really do need mufflers. So, I found a cheap solution: buy brand new resonator the right width from a member here for a good price, bought a complete '07 exhaust off of Craigslist with 40k on it for $35, sell cat off of that. Total investment around $35.

And I just loath that raspy sound when under acceleration then backing off, anythign to avoid/keep that to a minimum I told myself.

Personally, unless your pushing a metric-ton of power the 2.5" exhaust seems to be just fine. (from what I've read) And unless it's turbo'd and/or cammed then spending anything extra on exhaust on a GP just seemed pointless to me, like spending 1k to try and sound like a V8 as some people do. The only essential thing seems to be getting rid of the restrictive U-bend on the 6th gens. I'd rather spend the money on power mods than exhaust, if I was trying to spend money on this old thing, lol.

Just my $0.02, from what I've heard(literally, lol)/read. I'm still a noobie though, so pardon me if I got anything mixed up.

Originally Posted by silenthaven

So no power difference at all. Not trying to max out. To be clear this is my set up 104 autolites, 180 tstat, Overkill tune, k&n intake, zzp 3 inch downpipe, powerlog, 3.5 pulley and that pfyc borla catback muffler system. Now the 3 inch catback will do no good or better? Will at least adding XR1 borla mufflers sound better than the pfyc borla mufflers (assuming you have some idea of what they sound like :/) Not trying to sound v8 just trying to sound clean with a bit of volume and intimidation at a v6 level. Current setup sounds only slightly better than probably stock mustangs... idk

I'd definitely get rid of the power log and get a set of headers big difference. I had front and rear plog and 3" downpipe I noticed a difference with headers plus the stock crossover is so small. Leave the catback if you already have 2.5" your not going to gain anything just my opinion.

Originally Posted by silenthaven

So no power difference at all. Not trying to max out. To be clear this is my set up 104 autolites, 180 tstat, Overkill tune, k&n intake, zzp 3 inch downpipe, powerlog, 3.5 pulley and that pfyc borla catback muffler system. Now the 3 inch catback will do no good or better? Will at least adding XR1 borla mufflers sound better than the pfyc borla mufflers (assuming you have some idea of what they sound like :/) Not trying to sound v8 just trying to sound clean with a bit of volume and intimidation at a v6 level. Current setup sounds only slightly better than probably stock mustangs... idk

Want more flow.. Get rid of the plog/Dp and go with a set of headers. With your current setup there's no way your out flowing what you currently have.

The only mufflers from Borla that I've heard on the 3800 are the XS pro (that's what I ran stock and what I still run on my 3" setup). It's slightly louder but that's a giving going from the stock 2.25 to 3" exhaust but I'm also running a large 32" resonator that quiets it down. Only reason I went with 3" over 2.5" is because I got a hell of a deal on the piping and was way cheaper then what the 2.5 piping was selling for.


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