what should i do for exhaust

[1quick]

the cops in my town tend to be not so nice to me when it comes to exhaust, i planed to run stock exhaust with a cut out should i stick with this plan or try a cherry bomb glass pack with a turn down, i just need it to be a little more quiet than open down pipe or ill get pulled over every day and the stock cat back sucks the life out of the car and im having a little trouble geting it to fit right

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[Yaj Yak]

I run stock exhaust with a cutout off of the downpipe closed its quieter than a stock car...

 

[1quick]

how much boost loss do you see with the stock exhaust over having the cut out open?

 

[Yaj Yak]

I gain 1-2psi with it open.. The car is night and day quicker.. Also spool time is ridiculously faster

 

[1quick]

well shit I was hoping for like 4 psi difference lol i think i have a boost leak im only geting 10 lbs and i think it should be in the 14-15 range for how much i have the manual boost controler screwed in

 

[Yaj Yak]

I have a 14.5 psi spring. Cutout open I see 15ish almost. Closed ill see 13_14

 

[1quick]

i think my spring is only 6-7 lbs weak i know, zzp turned my junk down before i picked it up and ive been turning it back up slowly but i dont want to drop the exhaust and gain 5lbs lol so i was making sure, this is my first car that ive put a turbo kit on still learning

 

[Yaj Yak]

oh wow. ya throw a bigger one in... you might be trying to add too much with your boost controller... i have my controller turned down to nothing...


i have a big green spring which is .9 bar or 13.05 psi supposedly.

i am pretty sure i dont have any boost leaks... and might just have some boost creep to see up to 15 psi apparently... or my boost controller isn't where i thought it was

 

[1quick]

i looked at springs and so far ive only seen a 9lb spring for mine, i have a turbonetics race gate, there is an adjustment screw on top but im waiting to hear back from zzp, they had it at 17lbs now i just need to find out how lol

 

[Turbocharged400sbc]

 

[1quick]

thats about what i was thinking

 

[Turbocharged400sbc]

check and see if summit still has em on sale but a few people bought em last year cause with discount it was 110$ and free shipping for it
i know the part number is in hk's thread...

 

[Turbocharged400sbc]

3"id by 36" long, 30"x6" case length/width it was listed as a truck muffler

 

[Yaj Yak]

This just in... Did some hands on research real quick... Closed and open is right about 13.5psi comes on quite a bit quite quicker with it open tho

 

[Turbocharged400sbc]

fresh air side boost shouldnt change, what will change is pre/post turbine exhaust pressures

 

[Yaj Yak]

So I'm good then right

 

[1quick]

fresh air side boost shouldnt change, what will change is pre/post turbine exhaust pressures

so if ive got 10lbs of boost with full exhaust then its going to be 10lbs with no exhaust, thats good to know now i feel better about cranking it up some more

 

[1quick]

how quiet is that muffler and is there a noticible difference with it on vs off

 

[ProjectGTP]

Where did u get this turndown or did u make it?

 

[The Broken Regal]

get that resonator/truck muffler that james suggested, highly recommended by DDR

just fyi I made my 608whp through that, not a straight open dp... not that its really restrictive in the first place but just saying