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Old May 7, 2003 | 06:50 AM
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Lightbulb Images of CAT removal, new pipes :)

In case you didnt catch this on my ECU thread...


Attached Thumbnails Images of CAT removal, new pipes :)-350zcats1.jpg  
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Old May 7, 2003 | 06:51 AM
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Attached Thumbnails Images of CAT removal, new pipes :)-350zcats2.jpg  
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Old May 7, 2003 | 06:52 AM
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last one..
Attached Thumbnails Images of CAT removal, new pipes :)-350zcats3.jpg  
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Old May 7, 2003 | 06:54 AM
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if these go well on the dyno.. they will be offered as a package with the ECU upgrade.


i will update this thread when more information is available..

they are stock size, 2.25"...

all custom made from TechnoSquare Inc... the same people that are doing my ECU tuning..


for more info on the ECU.. just click the link in my sig..


--Cheston
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Old May 7, 2003 | 07:03 AM
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Very nice. Please keep up posted. Make a new thread about the ECU details. The existing one is too scattered.
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Old May 7, 2003 | 04:41 PM
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what kinda gains have u felt from that?
any difference in sound/ tone?
and how much did they run u>? if u dont mind me askin....?
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Old May 8, 2003 | 06:06 AM
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NICE!, Looking fwded to hearing the results.
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Old May 8, 2003 | 11:20 AM
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Dude I am very interested in those. I want a set. That would basically make your pipe an offroad type set up. It should sound different and you should see some good hp gains since cats are very restrictive.
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Old May 8, 2003 | 11:50 AM
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Wouldn't the ECU wig out cuz it's got an O2 sensor attached to the cat to see that the cat's working or not. With this pipe, it won't see jack... or are you guys working on the ECU so it doesn't look for this O2 signal? If so, I WANT I WANT I WANT.
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Old May 8, 2003 | 11:51 AM
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They make these little modules that are dummy O2 sensors you hook up to it. I have seen them work before on other cars.
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Old May 8, 2003 | 12:00 PM
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big thumbs up Cheston!
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Old May 8, 2003 | 12:00 PM
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no alterations to the ECU program to prevent the CEL from coming on....

these are stock factory o2 sensors...

as for power gain. its pretty grunty as reported. i havent driven it yet... as for noise level, barely noticable over stock.


as for the sale of these units. these are strictly a prototype unit and if everything goes well we'd expect to sell some either individually or as a package deal with the ECU....

hard dyno numbers soon...
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Old May 8, 2003 | 12:09 PM
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Is this legal? I mean, you're suppose to drive with your cats on.

The cats that are used this are'nt as restrictive as those on the past. I think there is not much power to be found removing them.

They look pretty nice tho, is that black powdercoating?
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Old May 8, 2003 | 12:11 PM
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no alterations to the ECU program to prevent the CEL from coming on....
So you guys did flash it back to the original setup to make sure that the changes you had made weren't the reason that the CEL light wasn't coming on?
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Old May 8, 2003 | 12:52 PM
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Originally posted by DarkTalon
Is this legal? I mean, you're suppose to drive with your cats on.

The cats that are used this are'nt as restrictive as those on the past. I think there is not much power to be found removing them.

They look pretty nice tho, is that black powdercoating?
In California they are not legal for street. Keep your Cats handy as you will want to reinstall them to get by smog inspection.
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Old May 8, 2003 | 05:19 PM
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please post when you drive the car long enough to know if the Check Engine Ligth turn on or not.


P.S. You can see a 10+ whp from removing the cats!
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Old May 8, 2003 | 08:18 PM
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Thanks Dave!
hehe.. you guys! if you ever need bad-*** audio equipment.. goto MaximaDave!

Originally posted by maximadave
big thumbs up Cheston!

DarkTalon: its high-temp paint.. just a prototype for now until we've determined if we really like the design.. then we will be producing more with various materials... the paint right now is to prevent rusting..
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Old May 9, 2003 | 04:51 AM
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Originally posted by 6kLaunch
In California they are not legal for street. Keep your Cats handy as you will want to reinstall them to get by smog inspection.
Calif? They are illegal on every street or road in the United States. I want a pair! I don't drive my car enough for it to matter and when I do I will probably be driving it to the track anyways.
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Old May 9, 2003 | 05:36 AM
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when you do state inspection here in Texas, they don't look under the car anyway, so even if you have the stock cat removed, they wouldn't know, unless your emission number is high.

These looks awasome. If they dyno more than 10hp, then it's definitely worth it!
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Old May 9, 2003 | 05:53 AM
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Uh yeah, without Cats, your emissions would be stupid high.
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