If it were me, I would look at these cross bars to enable lifting by frame rail:

https://www.quickjack.com/product/cross ... -quickjack

ny idea what RPMs you were seeing the cut out?
15 doesn't really arrive until 4k+ RPM, cutout was closer to 5k

For that matter, how were you getting to 15psi if you were using the stock KLR chip and cycling valve?
My KLR chip was hand marked - I have the BIN file if anyone wants to look.

Hi Tom - thanks for the input.

Let me see - with bigger turbo + bigger spring + cycling valve - no overboost.

Not sure I tracked every change along the way, but I never saw this until I had the bigger turbo + smaller spring + MBC.

Maybe I'm getting more boost at lower RPM due to the MBC?

Mike

So - updated the eprom to max out the overboost threshold and not seeing the cutoff so far (Tom - I did the same pass of a truck at the same highway 9 turnout as last week hitting full boost in 2nd gear and no cutout). My boost gauge peak still at 15psi. Its a bit odd that I didn’t run into this ...

Thanks for the suggestion. I don't really want to go beyond the 15 psi I'm at and yes it was a lot of trial and error to get to where I'm at.
Did you remove all boost limits in the DME EPROM and now rely on the EBC prevent overboost?

We're anticipating your report on the 944 Autobahn performance!

I spent a few years there, mostly driving a Saab 9000, but did get some time behind the wheel of a 928S4 and 964 C4, Would love to run my 951 there now!

I tried to get an aftermarket euro -like bumper to fit, but it just wouldn't work ...

Looks like I spoke too soon - I did a long full boost pull in 3rd gear and it happened again. I'll try Tom's suggestion to remove the overboost limit and give it another try. My boost gauge does capture max, and it still said 15 psi.

Nice write up!
I keep a spare dme relay AND the 3 way jumper in the glovebox. Can’t have enough redundancies!

18psi

Final Notes:

After trying various combinations of springs, Cycling Valve vs. Lindsey DP Wastegate and having to rebuild my turbocharger, I am finally seeing my desired consistent max boost of 15 psi with:
Stock Wastegate spring
Lindsey DP Wastegate
Lindsey Manual Boost Controller
Evergreen Raptor ...