Am looking to add Twins to my truck and am curious if the added Turbo effects exhaust noise? I currently have a large Donaldson muffler in my 5" turbo back system. If I am to add a second Turbo the the exhaust path does that quiet the exhaust down?
I had the Silverline bullet muffler on this system and thought it was to load, and was the reason I repalced the bullet with Donaldson..
Think the twins might change the note so I could possible use the straight thru muffler now?

 

Yes and Yes.

I still consider a turbo a muffler (because it is) so yes 2 will make it quieter and smoother. The Donaldson may end up surpassing stock in holding the db down.

 

ya when i put my twins on he exhaust noise was night and day difference....... a lot quieter

 

My set from Shane shipped Friday...

 

What did you get?

 

Putting stocker over s400
1st twins for me
Hoping for a little cleaner power than the silver 62 could offer

 

Yeah, you'll get it, you will be impressed! I seen a guy make 702 on fuel with those twins and some 90's... he had more, too, just needed some tuning...

 

I am hoping 600-650 with what I have now?
Stock sticks and cp3 will be my limit
Made 550 on s62 with what I have

 

Eh... I don't think you'll see much higher than that with stock fueling.

Look at a DIY CP3 kit, that'll give you a little more...

 

Is 600 the most one can expect from stock cp3?
Is DIY ok on stock injectors?
I will be happy with the same 550 if it is cleanly made

 

Unless he gets ball bearing twins... my noise level went way up. I sound like a freakin' 747 taking off.

 

Right right I was talking more on the engine exhaust note, the whistle will be a different story....

 

714 out of my 62~475 twins, that's with stock sticks, stock CP3, stock fuel pump and JR set on SW2 for towing.

As far as exhaust noise, I have the 5" Flo Pro and their muffler, which is pretty much more like a resonator than a muffler, it is not that much louder than my factory exhaust when driving sensibly, when I get on it, then the noise level rises, but I can still hear someone talking to me in the cab . .



CD

 

I like how it drives already... Am hoping to put in on some local rollers in Nov if at all possible.

Does not matter what it makes at this point as I like how it drives..!

 

I am with you on that one. Mine will smoke pretty good with an Htt 62/71/13ss. I am unsure if I want to send the HTT back and have the 71 turbine changed out to a 65 or just go with the stocker/S475 setup. My stocker is in a box and it only had 32,000 miles on it.