MERC-enary

2006 SL65: Is there a way to measure boost pressure (i.e. air flow) from each turbo individually, preferably with a mechanical gauge that us not permanent?

Otherwise, where is the best place to tap a line for a mechanical boost gauge?

Welwynnick

Will an OBD2 reader not do? You can use phone or tablet apps to display & record all sorts of data.

Nick

MERC-enary

I've logged data with my OBD2, and it's not making much sense to me.

MAP (kPa) @ idle = 20, @ WOT = 140 (seems low)

Calculated boost (psi) @ idle = -12, @ WOT = 5.6 (again, seems low)

IAT (deg F) @ idle = 180, @ WOT = 135.

Last 1/4 mile passes were 12.1 - 12.4 range (actual passes at the strip, not by OBD2) with rxn times around 0.2-0.4.

I'm in Florida, and it's hot as ***** right now. Just trying to determine if there is something wrong. Turbos don't seem to be whistling like they used to.

Welwynnick

Those are probably good values. I would start by trying to establish whether the intercooler pump is working.


Nick