2fast2furiousz28

do i need some sort of back pressure for my camaro

Ws6kid.

back pressure?

_Zac

iTrader: (1)

What is your exhaust set up?

HTX

iTrader: (1)

Lmao!

_Zac

iTrader: (1)

SHHHH.....

I want to hear his answer. lol

dh007

iTrader: (2)

gonna put a question out on the question how was the car tuned with or without?

WS6NIGHTMARE

iTrader: (7)

x2

ZONES89RS

iTrader: (25)

No, back pressure is for torque and you want top end HP...LOL.

Depends, what is the engine setup? Stock? Yea, a little back pressure is ok, a big cammed big inch engine, less is more.

onspeed

iTrader: (3)

if i'm not mistaken, ideally you want maximum exhaust velocity with minimum restriction. balance between the two.

98PurpleT/A

iTrader: (16)

No

Yes

No

Depends on who you ask some say you do most say you don't

Some will say if you dont have it you'll lose low end TQ most say thats BS

Here is a thread about it
https://ls1tech.com/forums/advanced-...re-torque.html

brian_rs/ss

omg are there really ppl out there that don't know the difference between back pressure and exhaust scavenging?

back pressure=restriction. no car will ever benefit from restriction.

you want the proper diameter pipe to acheive the desired amount of scavenging for your power band/set up. the smaller the diameter of pipe, the higher the gas velocity. high gas velocity is good for low end torque. the bigger the diameter of pipe, the more volume there is to fill and the velocity drops. or at least takes longer to reach the higher velocity numbers, which is more beneficial to peak power.

its not rocket science.

SS SLP2

iTrader: (8)

my SS /stalled A4/bolt ons/ cam /stock heads/ LT with 3" collectors (with 23" of 3" pipe beyond collectors , opening plates are in the L bends of y pipe)
Going into full exhaust with limiter set at 6700 shifting @ 6500 will never hit the limiter IF running OPEN headers will hit the limiter ever time unless I set shifts at 6100.
This I do not understand unless with no back pressure it rives much faster so the trans does not have time to shift
Johnny

brian_rs/ss

read through the thread purple t/a posted. a shorter pipe will have a dramatic effect on the power curve. especially open headers. basically you are shifting all your power up top...so let that sink in....ok. you are going to fly through the RPM's faster the closer you get to peak because of the exhaust scavenging effect i explained earlier.

also anyone who reads this please delete the word back pressure from your vocabulary, as far as you are concerned the **** doesn't exist.

CamaroSS27

iTrader: (6)

Thanks for a good explaniation, my cousin was telling me I may lose HP by putting on my X-pipe with LTs and no cats b/c back pressure and I told him I dont think so

CamaroSS27

iTrader: (6)

Thanks for a good explaniation, my cousin was telling me I may lose HP by putting on my X-pipe with LTs and no cats b/c back pressure and I told him I dont think so

brian_rs/ss

yeah you would be correct and your cousin is another one of these people that spreads misinformation. i swear the **** spreads like herpes.

anybody familiar with the law of conservation of energy? it states that energy can neither be created nor destroyed, only transferred from one state to another. essentially it has a flow. so keeping that in mind and realizing that hp and torque are a measure of energy, you would see how idiotic it is to assume that freeing up the flow of exhaust gases, would miraculously make your engine lose power. instead it would make more sense that because of the natural transfer of energy you would shift power from the lower RPM to the higher RPM. ei: you would see an over all peak hp/tq increase.

but you know who am i to question your cousins knowledge of automobiles

KCS

iTrader: (20)

Depends on your Camaro.

I would say on a racecar where power is the objective, the less restriction the better, but on a streetcar, I don't think that is necessarily true. You don't want all of your torque to come in at a higher RPM in a street car, and basically have nothing in the lower RPM.

brian_rs/ss

^true. which is why i like my set up

Palomba

iTrader: (1)

I read a really good explanation on this a while back. Theirs some sort of calculation thing you can use to determine what is the best size pipe to run under your car. i will have to look for it. but it had some really interesting points, and dyno charts.

Greed4Speed

iTrader: (7)

Get one of these.
http://kalecoauto.com/index.php?main...&products_id=3