[N54_Sauce]

As the title states I have this code that doesn’t seem to go away ever since I did my coils and plugs. I changed the pcv, put an aluminum VC and new oem gasket, checked the throttle body oring. Did a smoke test and there’s no leaks.

At times I’ve noticed also get the 30FE code when in high gears and I slightly step on it.

If anyone can guide me here it’ll be appreciated.

Car is single turbo if it matters

[SlowE92]

Stock TMAP sensor?

[oVeRdOsE.]

Originally Posted by SlowE92

Stock TMAP sensor?

the code description seems to fit this

[N54_Sauce]

Originally Posted by SlowE92

Stock TMAP sensor?

Yes it is

[oVeRdOsE.]

Originally Posted by N54_Sauce

Yes it is

even if this is not the issue, you might want to get the N20 one.

But before check if the MHD (or jb4 if you have it) settings are NOT for the 4 bar TMAP. You have an option for that.

the stock one is ''reliable'' between 19-23psi, if you are in that range, I would definitely change it. It's cheap.

Dont bother to get the conversion plug, simple reverse the wiring order on the stock connector, pretty simple, I did it with a pick.

[N54_Sauce]

Originally Posted by oVeRdOsE.

even if this is not the issue, you might want to get the N20 one.

But before check if the MHD settings are NOT for the 4 bar TMAP.

the stock one is ''reliable'' between 19-23psi, if you are in that range, I would definitely change it. It's cheap.

Dont bother to get the plug, simple reverse the wiring order on the stock connector, pretty simple, I did it with a pick.

It’s funny because I was looking through my stuff earlier and found a new map sensor but I think this is a stock map sensor not a 3.5. Usually the 3.5 is stamped with 3.5.

[oVeRdOsE.]

Originally Posted by N54_Sauce

It’s funny because I was looking through my stuff earlier and found a new map sensor but I think this is a stock map sensor not a 3.5. Usually the 3.5 is stamped with 3.5.

I guess depends of the brand, I dont recall on mine.

[N54_Sauce]

Originally Posted by oVeRdOsE.

I guess depends of the brand, I dont recall on mine.

just double checked its 3.5, i'll put it on later today and see if it changes anything.

[SlowE92]

Originally Posted by N54_Sauce

just double checked its 3.5, i'll put it on later today and see if it changes anything.

Also make sure in MHD to check off the 3.5 TMAP sensor in the options when flashing.

[SlowE92]

Originally Posted by N54_Sauce

just double checked its 3.5, i'll put it on later today and see if it changes anything.

But yes the Stock TMAP sensor is only good up to 20 psi I believe. Anything over and you'll get over boost codes.

[N54_Sauce]

Originally Posted by SlowE92

But yes the Stock TMAP sensor is only good up to 20 psi I believe. Anything over and you'll get over boost codes.

yea ive heard the same, however, im only at 18-19psi

[SlowE92]

Originally Posted by N54_Sauce

yea ive heard the same, however, im only at 18-19psi

Can you post a log?

[N54_Sauce]

Originally Posted by SlowE92

Can you post a log?

sure...

https://datazap.me/u/n54sauce/3rd-ge...25-26-27-29-30

[SlowE92]

Originally Posted by N54_Sauce

sure...

https://datazap.me/u/n54sauce/3rd-ge...25-26-27-29-30

Odd, past 5500 RPM you start to overboost slightly and it's cutting throttle. I'm confused because your throttle position is open during part throttle. Did you change out your TMAP sensor?

Your boost target wants to taper and your single wants to push past that. What tune are you running?

[N54_Sauce]

Originally Posted by SlowE92

Odd, past 5500 RPM you start to overboost slightly and it's cutting throttle. I'm confused because your throttle position is open during part throttle. Did you change out your TMAP sensor?

Your boost target wants to taper and your single wants to push past that. What tune are you running?

I haven’t changed it yet I’m going to try to do it this wknd.

The tune in the car is a custom tune, it was from when the previous owner owned the car.

Im currently speaking to David Shoup and he said “Looks like either the car went into cat protection or the AFR is set too rich up top in the tune. It also started to pull timing at the top of 4th.”

I might have to just retune the car from zero

[SlowE92]

Originally Posted by N54_Sauce

I haven’t changed it yet I’m going to try to do it this wknd.

The tune in the car is a custom tune, it was from when the previous owner owned the car.

Im currently speaking to David Shoup and he said “Looks like either the car went into cat protection or the AFR is set too rich up top in the tune. It also started to pull timing at the top of 4th.”

I might have to just retune the car from zero

I didn't even read the graph fully but your rail pressure dips in the upper RPM. What type of fueling have you done to your car?

[N54_Sauce]

Originally Posted by SlowE92

I didn't even read the graph fully but your rail pressure dips in the upper RPM. What type of fueling have you done to your car?

Fuel it stage 2 pump atm

[SlowE92]

Originally Posted by N54_Sauce

I haven’t changed it yet I’m going to try to do it this wknd.

The tune in the car is a custom tune, it was from when the previous owner owned the car.

Im currently speaking to David Shoup and he said “Looks like either the car went into cat protection or the AFR is set too rich up top in the tune. It also started to pull timing at the top of 4th.”

I might have to just retune the car from zero

I would definitely get it retuned. Or get a JB4.

[N54_Sauce]

Originally Posted by SlowE92

I would definitely get it retuned. Or get a JB4.

I’ve heard a lot of mixed reviews for the jb4, what’s the reason for your recommendation?

[SlowE92]

Originally Posted by N54_Sauce

I’ve heard a lot of mixed reviews for the jb4, what’s the reason for your recommendation?

It was just easier to plug and play rather than having a tuner. When I upgraded turbos I loaded the Hybrid BEF and all was well. You can mess around with map 6 and create your own custom map if you're adept at doing so, and it's fairly easy.

[oVeRdOsE.]

Originally Posted by SlowE92

It was just easier to plug and play rather than having a tuner. When I upgraded turbos I loaded the Hybrid BEF and all was well. You can mess around with map 6 and create your own custom map if you're adept at doing so, and it's fairly easy.

i agree, this is more an DIY option, a lot of people running this for years, tons of info.

yes it's easy to mess up, and people got issues and you'll probably wont get every Hp from your setup, but it's a nice and different option.

[N54_Sauce]

Originally Posted by SlowE92

It was just easier to plug and play rather than having a tuner. When I upgraded turbos I loaded the Hybrid BEF and all was well. You can mess around with map 6 and create your own custom map if you're adept at doing so, and it's fairly easy.

Gotcha car has a custom tune but for some reason I think this isn’t the final revision, I think the previous owner messed with the tune on MHD. Who knows I think I’ll just have to retune it.