NitrousDiscuss dry, wet, and direct port nitrous setups. How many shots can you handle?
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Here's my thoughts. Help me out if it would be pointless. My car's exhaust is stock. My wife likes it that way since its our daily driver. I was thinking a cutout either right after the Y pipe or after the resonator in the B pipe would help me out when I'm spraying at the track. I'm assuming my stock exhaust is hurting the 75 shot power potential. Would a cut out help me out in this scenario? Then the car would be quiet as can be when I'm not at the track and not spraying. Any thoughts?
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J Schultz
2003 Titanium SE Auto
Exterior mod: Tint
Performance mods: GAB w/ KN panel filter, NWP vias delete, Timing 17*BTDC, Custom test pipe/ exhaust cut-out, drop resistor mod.
Best 1/4 Mile Time: 14.6
And in my experience, the cutout is going to leak a tiny bit. I sometimes put Ultra Copper RTV around the plate, but that doesn't last too long before it starts leaking again. Also, without a cat and with a slightly leaking cutout, expect your car to sound crappy. But when it's open, expect it to sound pretty mean!
So your best bet to still have a quiet stock exhaust system that sounds exactly like stock, swap the cutout in and out when you need it. If it turns out that you and the wife don't mind the noise it makes with the cutout in place and closed, then leave it in. But mine has flanges on it so I can swap it out with the cat if I wanted to. But I always leave my cutout in place. I can care less what my car sounds like as long as it beats the car next to me.
Also, here is my 3.5 with the cutout open. VQ35 with headwork, cams, headers, and equal length mandrel bent Ypipe:
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NWP Engineering Phenolic Thermal Intake Spacers 10hp and 12ft-lb gain & 40°F temp drop on the VQ35DE
Aaron92se...Sweet car! Sounds mean and is fast! Here's what I decided to do to please my wife and mother nature. My car doesn't have an o2 sensor behind the main cat, so I am going to have an exhaust shop cut off my resonator, move the cat back a little bit, and then put the cut-out where the cat was. Then I don't have to change out the cat every time I want to use the cut-out, and the deleted resonator will give my car a slightly better tone than stock.
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J Schultz
2003 Titanium SE Auto
Exterior mod: Tint
Performance mods: GAB w/ KN panel filter, NWP vias delete, Timing 17*BTDC, Custom test pipe/ exhaust cut-out, drop resistor mod.
Best 1/4 Mile Time: 14.6
Aaron92se...Sweet car! Sounds mean and is fast! Here's what I decided to do to please my wife and mother nature. My car doesn't have an o2 sensor behind the main cat, so I am going to have an exhaust shop cut off my resonator, move the cat back a little bit, and then put the cut-out where the cat was. Then I don't have to change out the cat every time I want to use the cut-out, and the deleted resonator will give my car a slightly better tone than stock.
That will work if you have enough room underneath your car. On my 3rd gen, my cat sits in a recessed area meant for it. If I moved it further back, it will hang down way too low.
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NWP Engineering Phenolic Thermal Intake Spacers 10hp and 12ft-lb gain & 40°F temp drop on the VQ35DE
That will work if you have enough room underneath your car. On my 3rd gen, my cat sits in a recessed area meant for it. If I moved it further back, it will hang down way too low.
I still may do what you did, since it would be a little cheaper. But, if I go with the other way, the cat will be able to sit in the area where the resonator is. Should be enough room there. Anyone with a 5th Gen confirm this?
__________________
J Schultz
2003 Titanium SE Auto
Exterior mod: Tint
Performance mods: GAB w/ KN panel filter, NWP vias delete, Timing 17*BTDC, Custom test pipe/ exhaust cut-out, drop resistor mod.
Best 1/4 Mile Time: 14.6
Just an update...I did the cut-out the way I was advised in the above posts. $26 for the cut-out from Summit and $20 to have the flanges welded on. Getting the old cat off was a pain because of the rusted bolts, but I'm happy with the results. Best $46 I ever spent on my exhaust! I'm sure this will improve my times at the dragstrip...New nitrous times coming soon.
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J Schultz
2003 Titanium SE Auto
Exterior mod: Tint
Performance mods: GAB w/ KN panel filter, NWP vias delete, Timing 17*BTDC, Custom test pipe/ exhaust cut-out, drop resistor mod.
Best 1/4 Mile Time: 14.6
Sorry to hijack your thread. I'm new here and i dont know why i can't create a new topic.
Will a exhaust cut-out, just after the cat cause i've got a o2 sensor on it, will be benefic on a 3.0 with only a ypipe and a ram air intake or a 2.5" catback will be better?
Sorry to hijack your thread. I'm new here and i dont know why i can't create a new topic.
Will a exhaust cut-out, just after the cat cause i've got a o2 sensor on it, will be benefic on a 3.0 with only a ypipe and a ram air intake or a 2.5" catback will be better?
Thanks
wha??
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Whered that VQ go??
1. 2003 titanium edit blacked out,Hks Exhaust, Jim wolf Pop Charger, 17Deg advance, Nex Coilovers, staggered 20" (yaya i know)
2. 2000 pearl white 5 spd all basic bolt ons g35 whls, it was good while it lasted.
3 87 stang Project 306ci built motor full susp. (in garage) its sloow .....
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