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Open Downpipe 1jZ

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Old 04-07-06, 07:50 AM
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VJ RC51
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Default Open Downpipe 1jZ

god does it sound good. I always find myself getting bored and riding around with no exhaust on. I run the OEM exhaust with gutted cat and no rear mufflers, so within 10mins i can have my exhaust off. Just two bolts and two rubber hangers (that i keep lubed).

When you hit full spool around 2800rpms the car sounds insaine. Power in the higher RPM increases vastly. I was accidently doing 125 passing someone going to work today didnt even notice it. Forget trying to hear any cellphone or radio when your driving! I drive around a few days a month open dp, so far here in FL i have yet to be bothered by the cops, they dont even look at my car they think its someone else. That lexus name reallllllllly comes in handy sometimes!
Old 04-07-06, 07:57 AM
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DETUNED
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when I first got my car on the road, I was running just the DP and I couldn't stand it. Sure it sounded mean as hell, but it was WAY to loud. Maybe it was because it was 4 inches . haha

I coudln't even talk to the passenger.
Old 04-07-06, 08:06 AM
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VJ RC51
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Originally Posted by DETUNED
when I first got my car on the road, I was running just the DP and I couldn't stand it. Sure it sounded mean as hell, but it was WAY to loud. Maybe it was because it was 4 inches . haha

I coudln't even talk to the passenger.
The stock 2in? haha downpipe isnt THAT loud. When i put the 3in on next week, i dunno if ill be able to stand it open. I guess ill have to get some pipe and some kinda can before i hack up my OEM DP to fit the 3in on.
Old 04-07-06, 09:42 AM
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ATL-SC
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wow my JIC exhaust is loud enough and above 3000 i feel like i have to yell at the passenger
i cant imagine and open DP.
Old 04-07-06, 09:45 AM
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VJ RC51
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i think i might be going to the IMV movie premier open DP, but i hear the gainsville cops are exhaust ****'s....
Old 04-07-06, 11:30 AM
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Aristo300
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Well... after hearing my Magnaflows I'm not sure if a comprehend that the open DP sounds good.
Old 04-07-06, 12:02 PM
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ahh yet another reason why I love re-using my stock catback exhaust, it's quiet .
Old 04-07-06, 01:41 PM
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it kills power so bad
it's not even worth going near redline w/ the stock exhaust, u lose power 1/2way through.
Old 04-07-06, 02:13 PM
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VJ RC51
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Originally Posted by ConSynX
it kills power so bad
it's not even worth going near redline w/ the stock exhaust, u lose power 1/2way through.

Not with the cat gutted and rear muflers off....
Old 04-07-06, 03:26 PM
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i gutted my cat...and it was not even close to being worth the effort in my opinion. the car is a lot faster with open downpipe compared to stock exhaust with gutted cat, and i didnt notice any difference at all from non-gutted to gutted cat. are the rear mufflers that restrictive?...maybe ill take those off for now until i get a real exhaust setup....
Old 04-07-06, 03:33 PM
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The rear mufflers KILL hp. bolt those suckers off!!! The car is not loud at all with them off. Im being serious here. The two resonators do a great job. My car is no faster open Dp or OEM exhaust with no muff or cat. With ex on, its faster on the bottom end. With no ex, its faster on the top end.
Old 04-07-06, 03:42 PM
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im gonna go take em off right now while its still light out...
Old 04-07-06, 04:35 PM
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just went to my shop..took the mufflers off...big difference! sounds much better, feels like theres more power.
Old 04-07-06, 05:26 PM
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Originally Posted by VJ RC51
The rear mufflers KILL hp. bolt those suckers off!!! The car is not loud at all with them off. Im being serious here. The two resonators do a great job. My car is no faster open Dp or OEM exhaust with no muff or cat. With ex on, its faster on the bottom end. With no ex, its faster on the top end.
How much power do stock mufflers kill? Can someone please provide some empirical evidence proving that the stock mufflers "kill power." How much? 11rwhp?
Old 04-07-06, 05:27 PM
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got_trd
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welcome to my life 2 years ago....... back in houston when i had stock exhaust my mufflers were sitting in the garage... open dp was fun but the ear aches and interior rattles arent worth it


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