IS38 - Heardtbreak on the dyno

[AZGTI2]

Have you changed your plugs to the Denso IKH24 with .024 gap?

Yes sir. Done when IS38 install

 

[AZGTI2]

Dynapack dyno... 310 whp/350tq. Still too low. Tuner also noticed MAF sensor was maxed out at 22 psi. Not sure if this is normal and APR's software works around this?? Doing more diag next week

 

[Stage2Sasquatch]

If you are only boosting 22 PSI then something's wrong man. Do you have a mechanical boost gauge?

 

[gn4rwhals]

There is no MAF on this car...

Did he mean MAP? That would make more sense and lean toward the sensor on the throttle body pipe being bad or you do have a boost leak.

 

[AZGTI2]

If you are only boosting 22 PSI then something's wrong man. Do you have a mechanical boost gauge?

Unfortunately, no. I suffered indecision paralysis in regards to this and ended up with nothing. I'm not sure I am only hitting 22 psi, but that is what I was told the MAP is maxed out at

 

[AZGTI2]

There is no MAF on this car...

Did he mean MAP? That would make more sense and lean toward the sensor on the throttle body pipe being bad or you do have a boost leak.

Yes sorry MAP

 

[gn4rwhals]

Unfortunately, no. I suffered indecision paralysis in regards to this and ended up with nothing. I'm not sure I am only hitting 22 psi, but that is what I was told the MAP is maxed out at

Sorry if we covered this, do you have VAGCOM? If so log requested vs. actual boost pressure.

 

[Euro Tech]

Something is wrong with the car or the flash, no doubt.

 

[gn4rwhals]

I'm leaning toward the flash, those numbers are about right for a Stock R turbo.

22 psi requested is also around what a stock GTI boosts as read by the ECU.

 

[AZGTI2]

Sorry if we covered this, do you have VAGCOM? If so log requested vs. actual boost pressure.

Going to try and have this done with the CTS inlet pipe install on thurs. Thanks for the help

 

[Stage2Sasquatch]

Run the boost logs. There is something up with that.

 

[Willywonka]

The map is going to only read 22 psi. That is why u need a mechanical boost gauge. The tune tricks the computer to see less boost to lean it out to make more power. The most basic way to do this. if you were untuned the map would be accurate.

 

[Willywonka]

If you had a p3 gauge and plugged it into your obd2 port and did not use the external map sensor for the boost, the p3 gauge would only read 22psi. This is why people were buy the boost sensor with the p3 gauge.

 

[Stage2Sasquatch]

The map is going to only read 22 psi. That is why u need a mechanical boost gauge. The tune tricks the computer to see less boost to lean it out to make more power. The most basic way to do this. if you were untuned the map would be accurate.

My bad. Thought stock MAP was 25 PSI.

 

[Willywonka]

It's not the limit of the map but it's all apr wants the map to read. A fixed valve once it goes over 22psi.