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  #1  
Old 06-11-2009, 02:04 AM
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Where should i put my dumps?

planning on getting a cutout before the end of the summer, but debating on wether to get 2 and put them before the Y, or get one and put it before the main cat, or get one and put it after the main cat and replace that one with the high flow (which i was going to do anyway).. what does everyone think? any brand recommendations?
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Old 06-13-2009, 09:16 PM
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Re: Where should i put my dumps?

Do you want electronic cut outs, or the manual ones? One is probably enough....lol!
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Old 06-14-2009, 01:12 AM
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Re: Where should i put my dumps?

i was thinking manual at first, then add an electric later on.. what i really want would be some type so computer controlled device that i could hook up to the engine speed sender and have it open at, oh lets say 2800 or 3k RPM or something and be shut anywhere below that, or have it be adjustable so i can fine tune it if i like.. anyone good with gijjitronics that can do that for me??
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Old 06-14-2009, 06:24 AM
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Re: Where should i put my dumps?

I see....like what the Z06 Corvettes, and new BMW 750's have in their mufflers....a solenoid opens a valve when you're "driving hard" so you can hear it more...then it shuts up under normal driving....

All I know is...that setup can't be cheap...lol..plainly put...your most cost effective way would be to get a manual cut out, with those butterfly/wing nuts, and just uncap it when you want it loud...and then re-cap when you want it "quieter"...
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Old 06-14-2009, 10:06 AM
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Re: Where should i put my dumps?

this is what i got, http://www.dmhperformance.com/ecutout.htm i spent a while searching them online, there price is amazing, and they come with a 4 year warantee. i love mine, i keep it open everyday.. mounted after cats, before exhaust can. and with the hemi it sounds amazing.
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Old 06-14-2009, 05:14 PM
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Re: Where should i put my dumps?

hmm, looks like a good deal. hows noticeable is the performance gain? im assuming minimal at best, thats why i was thinking mounting before the cat to try to free the exhaust up as much as possible
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Old 06-14-2009, 05:32 PM
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Re: Where should i put my dumps?

iunless its after the headers the gains WILL be minimal regardless homie
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Old 06-14-2009, 05:51 PM
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Re: Where should i put my dumps?

figured as much, every little bit helps though which do you think would have a better sound?
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Old 06-15-2009, 04:18 AM
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Re: Where should i put my dumps?

before cats would sound better. but it might cause u to throw a code..not sure on were ur o2 sensors are
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Old 06-15-2009, 05:39 PM
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Re: Where should i put my dumps?

o2's on mine are in the cat, and before it, it probably would throw a couple
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Old 06-15-2009, 06:28 PM
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Re: Where should i put my dumps?

Some WJ's only have pre cats and no actual cat... the precats are both on the header pipes so if thats your setup it doesnt matter where you put them. I have my cutout right before the muffler on my WJ... It sounds badass... but inreality does little to nothing for power since all your removing is the muffler... the WJ flows pretty well stock. Heres a sound clip. Its a QTP 3in on a QTP electronic controller.

If you have an actual cat on your setup then go before the cat, but you will need an o2 sensor that will fake the ECU into thinking the dump is closed all the time.

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Old 06-16-2009, 04:01 AM
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Re: Where should i put my dumps?

Quote:
Originally Posted by Craig10114 View Post
o2 sensor that will fake the ECU into thinking the dump is closed all the time.
hmmmmmm.. what if i just relocated it???.. ok i just checked and there is an o2 before AND after the main cat, but i couldnt tell if there are precats or not.. i swear ive seen them there before but i wasnt about to lay on the ground cause im wearing a white shirt that i just bought.. haha.. ill look tomorrow
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