ATP Downpipe is now shipping! [Archive]

whooosh

12-01-2006, 08:08 AM

nice piece!
I wonder though about the primary 02 sensor
The C-PE has a long tube to take the sensor out of the direct flow of the exhaust to reduce the chance of getting a CEL. This one doesn't have that and since it's catless, I would be concerned.
I'm sure ATP knows what they are doing and the design is great, just asking is all...

Rawyzf

12-01-2006, 10:27 AM

Nice!

On the bottom of that link it says they are testing for the CEL.

Anon Y Mous

12-01-2006, 10:35 AM

it says they're shipping but mine hasn't been shipped and I ordered it 3 weeks ago.

whooosh

12-01-2006, 03:31 PM

it says they're shipping but mine hasn't been shipped and I ordered it 3 weeks ago.

I want all these mods now but I just got the car this past Monday and really should wait a little while......but not too long(ughdance)

Afroman

12-01-2006, 04:16 PM

I want all these mods now but I just got the car this past Monday and really should wait a little while......but not too long(ughdance)

I am in the same boat. However, no matter how awesome this DP may be. I wouldnt buy it if its still in the "testing phase". Thats is a pretty big (and expensive) leap of faith.

If you put this on and it throws a CEL you are dead in the water from what I understand about this car. It will pull boost and run really rich, which I guess is the safety feature.

Not to mention
This downpipe offers big performance gains on cars still running the stock turbo or upgraded turbo. Even on the stock turbo, this free flowing downpipe will make as much as 50 ft/lb of torque on the bottom end and a lot of HP depending on the amount of boost you run.

Can that be anymore ambigous..." a lot of hp".

Sounds to me like this is still in the early stages of testing and hasnt even been dyno'ed.

9Hooker

12-02-2006, 01:33 AM

Is it compatible with all chassis configurations?

Mazda 3
6 AWD
CX-7 FWD/AWD?

Reason I ask is I've got the 7 AWD and this looks enticing

ssinstaller

12-02-2006, 02:13 AM

azian6er

12-02-2006, 02:15 AM

this will make great power. at stock boost expect 20-30 whp and probably close to 40 wtq. turbos LOVE to breath

ssinstaller

12-02-2006, 02:17 AM

Is it compatible with all chassis configurations?

Mazda 3
6 AWD
CX-7 FWD/AWD?

Reason I ask is I've got the 7 AWD and this looks enticing

I doubt that the downpipe will fit as your engine compartment is probably alot different. But you could order the ATP V-band flange (it's the hardest part to fabricate), and then just have a local shop use it to make you a downpipe.

Nutari

12-02-2006, 02:18 AM

I have the CP-E catless downpipe and have a cel on constantly. The light is annoying , but it has no effect on performance. Apparently all it takes is a diode to get rid of the cel, but the light doesn't bother me enough to fix it right now.
yeah.. and bleeding stops eventually.. lets just not worry about the amount of blood you lose. :)

Doesnt a CEL mean your car is prob running super rich now ? thats going to cause alot of carbon buildup in your engine right?

ssinstaller

12-02-2006, 02:19 AM

this will make great power. at stock boost expect 20-30 whp and probably close to 40 wtq. turbos LOVE to breath

The car actually holds more boost with the upgraded downpipe. Boost comes on faster, and I hold about 17~18 psi where I used to hold ~16 psi.

ssinstaller

12-02-2006, 02:22 AM

yeah.. and bleeding stops eventually.. lets just not worry about the amount of blood you lose. :)

Doesnt a CEL mean your car is prob running super rich now ? thats going to cause alot of carbon buildup in your engine right?

The car runs really rich to begin with, but my wideband matches just about all the dyno AFR's posted for the MS6, so I don't think its really effecting anything. If anything I'm about .25 leaner than most of the dynos--that still puts me in the mid to low 10's at WOT so I don't think I have anything to worry about. I theink the fact that the factory upper O2 is a wideband sensor really helps this motor keep up with mods alot better than the average car.

Nutari

12-02-2006, 02:25 AM

The car runs really rich to begin with, but my wideband matches just about all the dyno AFR's posted for the MS6, so I don't think its really effecting anything. If anything I'm about .25 leaner than most of the dynos--that still puts me in the mid to low 10's at WOT so I don't think I have anything to worry about. I theink the fact that the factory upper O2 is a wideband sensor really helps this motor keep up with mods alot better than the average car.
hm.. sounds hopeful. So far all the mods for our DISI's seem to hurt the car.

ssinstaller

12-02-2006, 02:29 AM

hm.. sounds hopeful. So far all the mods for our DISI's seem to hurt the car.

Are there issues with modding the MS3????

Nutari

12-02-2006, 02:34 AM

Are there issues with modding the MS3????
no one has modded the ms3 yet. I think.. im going to be the first. yay me.

TMIC should be here any day now. going to throw that on and see..

ssinstaller

12-02-2006, 02:44 AM

no one has modded the ms3 yet. I think.. im going to be the first. yay me.

TMIC should be here any day now. going to throw that on and see..

That's a great mod to start with. The two worst stock parts on these motors are definatly the intercooler and the downpipe.

Captain KRM P5

12-02-2006, 03:03 AM

we carry this item on our site with free shipping as well;
http://mazda3online.web.aplus.net/product_info.php?products_id=696

Kooldino

12-02-2006, 03:57 AM

LOL, damn you Ken, beat me to it by minutes.

I offer this product with free shipping as well:

http://www.speedcircuit.net/product_info.php?products_id=165

As well as an adapter so you can use a greddy BOV:

http://www.speedcircuit.net/product_info.php?products_id=166

Anon Y Mous

12-02-2006, 08:56 AM

ken, pm me about the downpipe. I ordered one already but the guy flaked on me. I'll buy it from you.

Afroman

12-02-2006, 01:26 PM

I have the CP-E catless downpipe and have a cel on constantly. The light is annoying , but it has no effect on performance. Apparently all it takes is a diode to get rid of the cel, but the light doesn't bother me enough to fix it right now.

On my previos car with headers I had something called an MIL eliminator. It was a little black box that connected to the O2 sensor wiring harness.

All it did was fool the computer to think that cats were still in place. So no CEL.

Refonbass

12-02-2006, 03:14 PM

are those MIL eliminators Universal or vehicle specific?

9Hooker

12-02-2006, 03:21 PM

As I remember it was just a resistor. The resistance you need is specific to the O2 sensor.

Anon Y Mous

12-02-2006, 06:42 PM

not true. I'll look into it further but if I'm not mistaken the o2 sensors on the new DISI engines are wideband...the typical MIL's wont work without further engineering.

I'm just planning on using a non-fouler even though I'm not a fan of them.

ssinstaller

12-02-2006, 09:06 PM

On my previos car with headers I had something called an MIL eliminator. It was a little black box that connected to the O2 sensor wiring harness.

All it did was fool the computer to think that cats were still in place. So no CEL.

Our ECM runs the rear O2 sensor test when you droip to 0% throttle input on deceleration(voltage must drop to below~.3 volts within 3 seconds after the ECM cuts fuel).

Because an O2 simulator basically just drops the voltage a set value or bounces the voltage back and forth between ~.7 and ~.2 volts with no relation to the throttle input, a normal O2 simulator might get rid of the catalyst below threshold code, but it will throw the p0139(O2 sensor slow responce) code.

Blake

12-02-2006, 09:16 PM

Our ECM runs the rear O2 sensor test when you droip to 0% throttle input on deceleration(voltage must drop to below~.3 volts within 3 seconds after the ECM cuts fuel).

Because an O2 simulator basically just drops the voltage a set value or bounces the voltage back and forth between ~.7 and ~.2 volts with no relation to the throttle input, a normal O2 simulator might get rid of the catalyst below threshold code, but it will throw the p0139(O2 sensor slow responce) code.
spark plug non fowlers will fix your problem, it will trick the o2 sensor into believeing there is a cat. Do a search for catless MIL, or Non Fouler(sp.?) trick

ssinstaller

12-03-2006, 03:24 PM

spark plug non fowlers will fix your problem, it will trick the o2 sensor into believeing there is a cat. Do a search for catless MIL, or Non Fouler(sp.?) trick

The CP-E downpipe already has an extension on the rear O2 sensor. My problem is that the spacer is too long and it's slowing down the responce time of the sensor so I'm throwing p0139.

aTriz

12-04-2006, 04:49 AM

My ATP downpipe shipped on the 1st, arriving to FL on the 7th cant wait :)

Prison

12-14-2006, 06:12 AM

Got a question for anyone that can answer. I have an all stock car and first thing I want to do is dp. Without Cats for both, will the atp give me as more or less hp and torque then the cp-e. Someone please let me know because i cant seem to tell.