The bolt you are referring to that has to be shaved off is on the driver cat heat shield. You will notice it rub or touch when you install the ART pipes. I dont think it causes hissing for that all TPs cause hissing. It would cause a rattling noise though. As for the bolts, I believe you can use stock bolts. Im not sure about the silicone seal paste though. If I remember correctly, the ART pipes should already have gaskets on them.

 

Hello,
I put ART V2 pipes on my stock exhaust with HR Y pipe and I have horrible rasp at 2500-3000 rpm. What can I do to help get rid of some of the rasp? I am not willing to buy a full exhaust but would be willing to buy an XYZ pipe with attachment if it will get rid of the rasp.

 

You shouldn't have horrible rasp, but the stock system *can* give you some.

I know the XYZ pipe with the resonator module will give you none and the HFC module will give you practically none.

My advice would be the XYZ pipe as it's a good idea anyway. If you wanted to save money, i have some practically new modules for it, you could just get the XYZ pipe on it's own and your choice of module from me? (I don't need them since i upgraded to the TDXv2)

 

Well I guess since I have never had rasp on an exhaust I might think its petty bad but it might not be. I will be PM'ing you shortly about the modules as I really want the HFC and resonated one to try out and see if they get rid of the rasp. I know this isn't a MD Y pipe thread but will i still see equal gains with the ART pipes and XYZ W/resonator or HFC equal to or better than stock hr Y pipe and ART pipes?

 

Always will be better. There is actual tuning tech behind the XYZ design, the optimum merge was calculated.
No crush bends are used, overall the HR y pipe is a bit better than the earlier model, but the XYZ is quite a step over that.

 

Perfect thanks for your quick replies looks like I will be getting an XYZ pipe shortly as I need to get it before I get my tune, and that needs to be done soon. I just need to find a place that sells just the pipe

 

Most places should have that as an option, if not, you can order just the XYZ (module-less) from MD themselves.

 

I received a P2A00 code recently and I was wondering if anyone that has ART pipes ever receive this code and if you guys have any solution to fix it?

The code description is P2A00 02 Sensor Circuit Range/Performance Bank 1 Sensor

Any info on this will be much appreciated.

 

Isn't that code for one of the 'sensor 1' - ie. the fuelling sensors?

They are before the ART pipes/Cats, did you perhaps catch it during install?

Try checking for leaks between the manifold and the ART pipe, it's possible if there is a leak that it could still affect it further upstream with it being quite close.


Also, has it just gotten cold where you are when this started happening?

 

Yeah I know its the A/F sensor on the exhaust manifold. Couldnt be caught during install bc I have had the ART pipes on for almost a year now.

and YES it has gotten very cold when this code popped up. It was my first time taking the car out in 40 degree weather. Does that have to do with pipes stretching and shrinking?

I could check for the manifold to cat section to see if there is a leak.

 

I can't say what would happen when it goes cold, perhaps just the fuel burn. However, so far as secondary sensors throwing a code, i know in England that anything running anti-foulers (not just ART pipes) have been known to change when the winter cold hits.

My secondarys also tripped when it first went into the 40's. Despite them being fitted during the same temps before summer.

I believe you have the HR motor? have you made sure they're not leaking? i know some people had problems with lesser gaskets on the ART pipes.

 

If its a code for the A/F sensor, its upstream of the ART pipes. This suggests either the sensor is bad or its not getting enough fuel.

A while back when I did Air Intake Temperature Vs HP testing, I noticed the engine runs leaner at low temperatures than it does at 80'F.

It also runs significantly richer at high inlet temperatures.

I'm not really sure if inlet temperature has anything to do with the code but the ART pipes shouldn't affect the A/F sensor either. The ART pipes are monitored by the downstream O2 sensor.

 

I have a DE motor non revup. I havent really made positive assurance that it was not leaking but I will tom. I just reset the code to see if it would pop up on my POWER map and it lasted a bit longer till the code popped up.

Maybe I should add a gasket between the ARTS and manifolds bc I didnt do that. I saw that the ARTs had gaskets made on them already so I didnt install gaskets on them. But I will install gaskets tom. and install a new A/F sensor just in case.

 

When you say "its not getting enough fuel" are you referring to my car running too lean? If so, that might be true bc I have not gotten a tune with the ART pipes + TDX2 exhaust + JWT intake.


Also I have the Version 2 ART pipes that had the ceramic paint on them. Do those ART pipes come with gaskets built on them? Or was I suppose to install gaskets on them?

 

If you have the non revup DE, i believe you should be using the factory gaskets, i re-used mine and so far as i can tell, they're sealed perfectly.