Hers is Keith's (GDE) reply regarding boost levels...

Your boost seems about right. Peak boost is at 2200rpm and fairly constant to about 3200rpm, then is tapers off a bit as you approach 4000rpm.

Stock peak boost is 19.3 psi
ECO peak boost is 19.6 psi

These are the set points for closed loop control, there typically spikes above these values that will taper back down to the set point as the turbo governor kicks in.

The peak boost for the HOT tune is also 19.6 psi. The extra performance comes from additional fueling and slightly more advanced timing. I could not really increase the boost beyond this as I am limited by the speed limit in the turbo bearing assembly. Higher boost levels would have a corresponding decrease in turbo life.

So my boost seems okay, looks like our turbos are limited to around 20 psi. Above that they may not last very long.

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2007 Grand Cherokee CRD, GDE ECO and DPF delete.
2006 CRD Limited, GDE ECO Full TQ and TCM tunes. SOLD