98 z28 mullins

iTrader: (3)

on a 98 z28 camaro m6 with a lm7 how much better should it perform keep in mind it has equal length 1 3/4 headers on it with no cats

NSSANE02

iTrader: (14)

You could see a few hp/lbs but the sound alone is enough to make the switch imo. When you start adding more mods the TD's will really start to show there performace over a catback.

98 z28 mullins

iTrader: (3)

i got a cam laying around getting ready to go in it after i replace the bottom end

TXZ28LS1

iTrader: (5)

i definteily would love to ditch my ory and catback for a tru dual setup. but my only concern is ground clearance. i plan on lowering my car and dont want to be scraping on everything.

SOMbitch

iTrader: (8)

https://ls1tech.com/forums/generatio...heads-cam.html

A well done merge/y will cost virtually nothing at 500rwhp as seen here........He use a stainless y IIRC but I believe the aluminized FM is as good for flow....This is one of the 2-3 best threads EVER on here IMO.....

98 z28 mullins

iTrader: (3)

mine is custom made and dumped underneath the rear seats and the car it was on before had no clearance issues

mikedamageinc

iTrader: (49)

My lowered SS with catted Y hangs down a little and scrapes constantly and I have to avoid most speed bumps so I'm afraid to go to duals that would hang down more. I wish there were more alternatives for running pipes...

LS14EVR

iTrader: (3)

Check out Bassani Tru-Duals. Nice system. Good clearance.

deelong4002

iTrader: (8)

I have TSP true duals, and i dont scrape on anything really, however i am not lowered.

But i think i could also do a better job of tucking it up there, i just havent done it.

My question is, why cant someone build an oval exhaust for these cars that utilizes the same cross sectional area of a 3" pipe, but is maybe 2" in thickness from top to bottom, so that it would tuck up nicely?

98 z28 mullins

iTrader: (3)

mine is running 2.5 pipes and is made to tuck up in there so you cant hardly see it

gyrene2003

Anybody have true duals and and tunnel mount TA? I here that the TSP system won't work with a tunnel mount TA.

NSSANE02

iTrader: (14)

I do but my crossmember was made for TD's. MWC makes crossmembers to work with TD setups.

PowerShift408

iTrader: (44)

Opening the dual cutouts on my ARH y-pipe yielded 24 rwhp on my 408 car, and the ARH merge is the best I've seen. It's hard to argue volumetric efficiency between a true dual exhaust and a y-pipe exhaust. For those wondering, my car is getting a true dual setup as we speak.

71-Camaro-98

iTrader: (17)

Check out Spintech Mufflers... They make all kinds of oval tubing but you would have to do a custom set up, and it can get expensive fast with the oval.

SOMbitch

iTrader: (8)

Yea you guys who work in driveways know more than PG who makes his living doing this stuff Carry on cause I need more some more humor to carry me to the weekend

I am not saying TD's can't support more power I know it can... I am saying up to a certain level the difference between the two is moot....and only a few guys on here run enough power for it to make any diff at all...

Obviously PG knew it could support his 500 RWP goal or he would have run TD's!!!!

Why is this so hard for you to understand??????

PowerShift408

iTrader: (44)

He reached his 500 rwhp goal with a cutout that was open. Not taking anything away from him or the y-pipe exhaust, but according to Pat, his car lost 9.5 rwhp with the cutout closed, so there obviously is restriction at that power level with a y-pipe, no matter how good the design is.

NSSANE02

iTrader: (14)

Where the hell did that come from? Just because Patrick happened to use a Y in that car doesn't mean it's the end all exhaust setup. That wasn't even a max effort car, there were a lot of things he could have done to pull more power out of it, as he himself states a few times.

It's not about what power they can support, TD's will PROMOTE more power than a y setup in most applications. The difference is not moot.
... again that's a retarded argument. You're taking one car that was purpose built for a specific goal (not max power) and saying because it has a y-pipe setup that it's the best choice.

98 z28 mullins

iTrader: (3)

i love me true dauls

mikedamageinc

iTrader: (49)

I agree with powershift and nssane, everyone knows there is no end all to anything, everyone has there own preference and goals

I went from stock exhaust to LT's, crappy merge ORY, and LM1 and it sounded like crap, raspy redneck popping and migrain inducing drone.

I threw on Moroso spiral flow mufflers on the end and SLP catted Y with a good merge and now it sounds awesome, deep smooth tone, very little popping even on engine braking, not quite as good as duals but close enough for me.

PAGregSS

iTrader: (10)

I love my true duals. If y-pipe is so awesome, why do the all out race cars run mufflers with dumps right off the collectors, essentially a very short true dual system? Wouldn't it make more sense to run a y-pipe with it dumped right after the merge?