TD_D mod journey. From stock to the 'bastardmobile'

[HolyCrapItsFast]

Okay good! I will have a look at it now. Thank you!

 

[HolyCrapItsFast]

I see something weird. In your log, your atmospheric pressure is being recorded as 1.5bar. This translates into 21psi and 42inHg.

Is this right??? How are your ear drums holding up. I thought the only way this was possible was if you were driving under water. :rofl:

I'm not sure how to proceed. What does your local weather say your areas barometric pressure is. I'll just use that number.

 

[HolyCrapItsFast]

Something else is really wrong. Do you have the ability to log Manifold Relative Pressure.

Also is this the stock MAP sensor or is it after market?

 

[Td_d]

Hmmm... this rings a bell, when I picked up the car the tuner was mentioning something about something being unplugged causing the car to think it's underwater! Stock MAP - ok - where do I need to start looking, physically? Yes - I can log Manifold Relative Pressure. This sounds like something is unplugged - would the secondary air pump delete have anything to do with this?

 

[Td_d]

I'm up at serious altitude - 1600m - I'll check what the local pressure is now - hang 5, I'll check the weather sites.

 

[Td_d]

1023.03mb

 

[Td_d]

Map sensor is the black sensor on top of the throttle body. Also, when it comes to the air pump, I'd say only if you did not block it off or didn't get it to seal up properly. The air pump is for emissions and cold starts. If you turn off all the codes and plug the holes, no more issues. I have a list of all the codes.

Yeah - code 410 is off using Romraider. I wish I'd paid more attention that night when I picked up the car - I specifically recall the tuner chatting to the mechanic about something being disconnected, making the car think is was under much more pressure than it is...

 

[HolyCrapItsFast]

Yes... When you remove the air pump I think the Atmospheric Pressure Sensor is part of it... That is what is unplugged and you need to see if you can get that sensor reinstalled. There are quite a few tables in the ECU that references it an make compensations based on it.

I believe this will also effect what we are trying to do with the load comp tables but I can't be to sure of that. At the very least I need and accurate boost reading. Logging Manifold Relative Pressure is a start and If you can compare it to a live boost gauge that would be the way to do it.

Just do one short log WOT in third gear and keep and eye on the boost gauge. Then compare that number to the log.

 

[Td_d]

Actually there are about 10 codes associated with the air pump, atleast from looking at the Cobb side. Had 410 showing up as blown even though it was off because the other codes were on. Not a fan. Let me know if you need the list.

Would definately be useful - will PM you email address.

 

[Td_d]

Yes... When you remove the air pump I think the Atmospheric Pressure Sensor is part of it... That is what is unplugged and you need to see if you can get that sensor reinstalled. There are quite a few tables in the ECU that references it an make compensations based on it.

I believe this will also effect what we are trying to do with the load comp tables but I can't be to sure of that. At the very least I need and accurate boost reading. Logging Manifold Relative Pressure is a start and If you can compare it to a live boost gauge that would be the way to do it.

Just do one short log WOT in third gear and keep and eye on the boost gauge. Then compare that number to the log.

Ok, that makes sense - will have to poke around under the hood tomorrow - will revert.

 

[HolyCrapItsFast]

Okay cool!!! Break out them wrenches! :lol:

 

[HolyCrapItsFast]

Don't worry about the boost. I did some math and the manifold vacuum/pressure is perfect.

Just get that sensor installed and we'll take it from there. I don't think I want to use the log you just sent me. I'm pretty sure Load Comp is related to Atmospheric Pressure so when that is resolved we'll take another log.

So sorry for the inconvenience though.

 

[Td_d]

No worries - like I said before, this is an adventure ;-)

Thanks for all the help - what was that proposed title - Holy's Performance? Chuckle...

 

[Td_d]

Ok - help me look in the right direction - I'm looking through the service / workshop manual and I'm only seeing the manifold pressure sensor on the throttle body - is there a seperate one that measures atmospheric pressure? Not finding it referenced, esp. with reference to the airpump delete?

 

[Td_d]

Is this what I'm looking for?

 

[HolyCrapItsFast]

I really don't know for sure. There is a separate sensor for atmospheric pressure. On MY prior to 07 they were in the ECU. For MY 07 and up they were part of the air pump assembly but I could be wrong about that. I will see if I can do some research and digging around.

 

[HolyCrapItsFast]

You'll want to log Atmospheric Pressure. Not Manifold Absolute Pressure. I believe this is the thing that has the sensor as part of its assembly. This is from an 07

 

[Td_d]

Yeah.. that looks like the part referenced in the service manual. I'll be interested to see Fuji's log to confirm whether it is part of the assembly. Couldn't get the car in for welding today, work, shitty day...

 

[HolyCrapItsFast]

Yup... Your under water to. You should get that fixed also.

 

[Td_d]

So I guess That means either refitting the air pump, or getting an aftermarket. Wonder if any of the vendors have some ideas?