Need a volunteer....MAP sensor swap.

[Rich]

I'm looking to swap MAP sensors with someone, to see if it gets rid of my boost cut. I'm only looking to use it for a few minutes then swap back. I believe the swap would be fairly easy, with the right tools. Anyone willing to do this? I'm off now through Thursday, so I'm open pretty much whenever to do this. Thanks!

[Rich]

Bueller?

[SpeedRacer]

Hey you can use crystals today if you need too.

[Rich]

I'd love too....but hell it's cold out there. Do you know how to remove/install one Josh?

[firestoned]

i Have removal instructions in the book, Rich.. and you can swap with me.

Removal is VERY easy 2 bolts, just like the intake sensor

Maybe we can swap other things for a bit too./..I need to try somebody else wastegate control solenoid valve...

[Rich]

When?

[firestoned]

txt'd

[SpeedRacer]

im baccck pm me if you want to swap rich.

[Rich]

Thanks Josh, got it done at Eric's shop this morning. Swapped the MAP sensor, the purge valve, and the intake....no improvement. Eric was able to learn that his WG solenoid is bad, but that's the only good news we have from about 3 hours of work.

[firestoned]

Rich, you should hook your standback up, and datalog your WG duty cycle.
On a WOT pass, the duty cycle should start out near 98 and then taper down slowly, but if it just stays at 98 then something is wrong with the boost control system (mechanically).

I'm pretty sure that the problem lies there somewhere, the only way you would see 21psi STOCK is if the wastegate wasnt allowing the pressure to bleed off properly.

I also think that you are getting fuel cut, due to the high boost levels. The fuel system is trying to keep up with the airflow that the turbo is making, and it just cant do it, not at any rpm, because the wastegate isnt opening properly, which gives you that creep you see..

Does that theory make any sense?