EV1LR8

I would like to know if anyone has done any testing when it comes to running a Screamer pipe or having it plumbed back in

What sort of power gains if any have guys seen from going a screamer

looking more at street / strip cars

My set up is a 408ci, S480 96mm rear 1.32ar

Cheers

EV1LR8

any one ?

ramairetransam

iTrader: (18)

whats a screamer pipe ?? never heard anyone on here use that term or word.

69-chvl

iTrader: (11)

Cant comment on power but I have 2 w/g's screaming and its not as loud as I thought it would be. Squealing tires makes make alot more noise

TDagen

He is referring to a wastegate dumping to atmosphere vs plumbed back to the downpipe/exhaust.

OP: Personally I have never plumbed one back to the exhaust, I always leave it open route it towards the ground and let it "scream". I figure it helps relieve some back pressure that way...

willizm

iTrader: (10)

I don't know if there are many people that have went from recirculated into the exhaust to a wg dump. I'd imagine it's very dependant on how much boost and how large your dp is. If it's a big 4" deal and you are not pushing the single that hard then it probably wouldn't make much of a difference.

lt170chevelle

iTrader: (2)

I originally ran a 1 3/4" dump pipe of my wastegate and was pretty raspy. After a week I plumbed it into my 3 1/2" downpipe. It felt slightly slower but had sounded much better and could hear the turbo whistling. If I had to redo it, id run it seprate with a small glasspack or something just to knock out the raspiness. lol But its one of those preference things, made it sound like beast only at wot I just didn't like the sound of an open pipe

stevieturbo

Unless your exhaust is very restrictive, it wont make any difference.

EV1LR8

the dump pipe is 3.5" and aiming to run 18-20psi

SirNemesis

I went from screamer to plumbed back and noticed no difference in power, but it sounded much nicer. Same 3.5" dump/exhaust. Might be a different story at bigger power levels.

stevieturbo

The noise can be irritating inside the car if vented to atmos.

I ended up making a couple of small silencers instead which killed the worst of the noise

wolfinsheepsclothing

iTrader: (1)

Gains will be marginal (if at all). Personally, I think open dump tubes sound great