ATR ?? exaust

Don W.

Don W.

Stab it and steer it
Thinking of a high flow cat and Flowmaster from a local muffler shop that does lots of hot rods. (Flowmaster is made where I live.) However poking around I see that most folks like ATR. One comment stated that ATR is not “baffled” like Flowmaster hence the Flowmaster is not good for our turbos. At least it might hinder performance. Is ATR straight through?



Yes I’ve seen the comments about no one like the sound of the Flowmaster either.



Just wondering before I make the jump. I like the idea of a “straight through” muffler on a turbo.



Also any comments on high flow cat and muffler with a stock engine/turbo would be appreciated. I’ve seen some threads on boost spikes.



Thanks
Ok.gif
,



Don
 
G

gmcturbo

Active member
Re: ATR ?? exaust

i got the atr and i really like it. yes the muffler is straight through. a plus is that its stainless steel and it fits very well. i got in on a group purchace and ended up gettin it pretty cheap. i recommend it as the flowmaster is baffled and could restrict flow.
 
scotts4

scotts4

ADDICTED
Re: ATR ?? exaust

i have the atr system and it is nice but if you remove the cat it will drone (in a ty anyway) i dont know about a sy .
 
havin-fun

havin-fun

NWSTP
Re: ATR ?? exaust

I have the ATR and really like it, fits great and easy to install. You can have boost problems with stock wastegate.
 
SY2455

SY2455

70's Veteran
Re: ATR ?? exaust

Why not run a pipe off the cat with no muffler. That's what I did so the truck would be like the Car & Driver test Truck & it not loud at all with a 3" exhaust pipe
 
Ian Turgeon

Ian Turgeon

Cascading Inspiration
Re: ATR ?? exaust

the cat will keep it quiet. I know of a ty running no cat and a flowmaster muffler that wont overboost. And I doubt its a result of an excellent wastegate, rather that the flowmaster restrics the flow easily as much as the cat did.
 
Don W.

Don W.

Stab it and steer it
Re: ATR ?? exaust

Thanks, keep posting...

I’ll have to try the open exhaust method just for the heck of it.


Regardless, if I modify the exhaust I don’t want to loose and engine because of an over boost. So I guess that’s my main concern.



Thanks,



Don
 
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