Check engine codes on MHD stage 2 OTS tune

[Soupraricky]

I've been running the car on MHDs OTS stg 2 tune for alittle over 3 months now. Running a catted ETS downpipe. But I keep getting CEL, I'll clear the codes and they always come back. Any thoughts?

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[Benjilis]

ETS simply isn’t a good downpipe. AA is the only one I’ve seen with a guaranteed no CEL

 

[zrk]

ETS simply isn’t a good downpipe. AA is the only one I’ve seen with a guaranteed no CEL

An actual flash tune should code out the CEL. It's the other ones that are concerning. Esp. the oil pressure ones. I'm looking into this a little bit.

 

[Mason]

Id start by putting the stock dp back on. Just to rule that out. It’ll probably clear half those codes

 

[Soupraricky]

An actual flash tune should code out the CEL. It's the other ones that are concerning. Esp. the oil pressure ones. I'm looking into this a little bit.

The oil ones are my main concern as well. Also my car was one of the few that wasn't able to read oil measurements. So I'm thinking it's a faulty oil control. Let me know if you find anything. Thanks!

 

[Soupraricky]

Id start by putting the stock dp back on. Just to rule that out. It’ll probably clear half those codes

The O2 ones do go away even with just flashing back the stock tune. So I would assume putting back on the OEM dp would do the same. At this point it's the oil stuff

 

[Soupraricky]

ETS simply isn’t a good downpipe. AA is the only one I’ve seen with a guaranteed no CEL

I actually didn't know that. I've actually considered going Catless. Do you recommend I stay catted?

 

[zrk]

I actually didn't know that. I've actually considered going Catless. Do you recommend I stay catted?

Depends on your goals. i wouldn't worry too much about O2/Cat stuff.

 

[Sereph102889]

I've been MHD tuned for quite a while now and have had 0 codes aside from the "Insufficient fuel for power delivery" code that you get when trying to run the OTS E50 map. Basically it will put the car into limp mode if you red line the car on the OTS E50 map. All of that is 100% solved with my MHD Ethanol Custom tune though.

For your issue, MHD has a box you can click inside of the app itself that turns off the entire catalytic converter check system so that you can't get a CEL related to the Catalytic converter. I've been running a catless DP for close to a year now with 0 CELs. I think your issue is entirely mechanical and specific to your car and has nothing to do with your tune.

 

[Benjilis]

An actual flash tune should code out the CEL. It's the other ones that are concerning. Esp. the oil pressure ones. I'm looking into this a little bit.

I too had radiator shutter with MHD
Oil pressure is idd though for sure
I also had the shadow codes but I was catless

 

[Benjilis]

I mean. It’s up to you. If your catted dp isn’t working. Go catless.
people that go catted are in a strict state / arnt tuned.
so I chose to go catless and keep my OEM dp. I can always switch it out / cheat the system with a catless dp anyway.

 

[Cptnslo]

I was under the impression , from an old thread I had seen, the radiator shuttle codes are a part that was not equipped on US spec cars and to not worry about it. I’d have to dig for the thread

 

[Mason]

Catless if you’re ever going big turbo

 

[Benjilis]

Also catless if you like high burble.

 

[zrk]

Also catless if you like high burble.

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