rob69zombie

iTrader: (7)

I have a 3" ORY on my GMMG and I don't think it's that loud. There are MUCH gnarlier set-ups in my area that make mine sound like a hybrid. But again, my car has stock internals and that contributes a lot to it's lower noise level.

BrandonWS6

How do you guys think the borla flows?

rob69zombie

iTrader: (7)

I think that has a lot to do with the size plate you're running in it. Still though, fully capped probably flows pretty well.

TORCHD 02 TA

iTrader: (39)

I think my GMMG flows well..

When I had my cam installed I was running a 3" TD set up (O/R H and 1 Chambers) car mayde 415/378 CAM ONLY (228/232)

Then I went back to my 85mm MAF and 42# injectors tuned, by this time I had switched to my GMMG c/b (see sig for exhaust set up) and with the same cam, car made 419/382

BrandonWS6

Well im getting the non-adjustable one, so im assuming the is just fully open all the time. Is that correct?

rob69zombie

iTrader: (7)

IDK much about Borla but I would assume there would be no plate meaning it would have to travel through the muffler completely so it should be quieter.

1979rs/z28

iTrader: (21)

No plate is louder, it goes thru the plate on that tip side before it makes it to the muffler. Almost like a cutout. See pic plates go where the 3 bolt flange is.

rob69zombie

iTrader: (7)

I think he's talking about a non-adjustable kind that doesn't have the same tips with the cut-out in it. If it doesn't have the cutout at all it would have to go through the muffler and it should be quieter. Wait; I didn't know Borla made that kit non-adjustable...lol

BrandonWS6

I was under the impression that the plates restricted the exhaust, so i figured the non adjustable would just have no plate causing it to be louder and flow the best. (sorry for the thread hijack)

rob69zombie

iTrader: (7)

You can see in the pic that the built-in cut-out is a bypass from the muffler. If it wasn't there (like you're describing) it would go through the muffler making it quieter.

Josh40601

iTrader: (9)

what about flowmasters? good? Bad? I have the 50 series on my car with stock manifolds, magnaflow high flow cats, then straight piped to the flowmaster, then out through a CME.

RedRocketZ28

iTrader: (19)

I love the sound of my dual/dual and it flows very well. I picked up very little with my cutout open on the dyno.

Brandon, the non-adjustable Borla flows throught the muffler. There is no cutout in it. My Dad has it on his SS with stock manifolds and it sounds amazing.

kacivic

iTrader: (2)

i've got a 2 chamber flowmaster on mine with no cats, just got it dyno tuned yesterday by latemodel racecraft here in houston and asked the guys about possible power loss if i added high-flow cats and ran no muffler.

fwiw, and i can't verify this with dyno numbers yet, they said in their experience a flowmaster will eat more power than a set of cats.

Josh40601

iTrader: (9)

wow. I'm interested in seeing what it is. I have true dual magnaflows without cats, running 2.75" pipe from the manifolds to the mufflers to the tips on my C10. Sounds pretty good, but I think the camaro sounds better.