where the hell do i find, a good 2.0 MPS..... Options

[bd1308]

PP has them NLA, so i am sure AA has them NLA too.....i did see them one time offered at over $1000 and i KNOW i dont have that kinda money...unless i sell my stash (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif).....of computer stuff.

So, where do i get/rebuild my MPS so i can get back on the road without putting along with the damn car running rich.


I just want to thank you for helping me solve this puzzle.....this is it....i remember now WHY i replaced the hose from the MPS to the plenum in the first place.....i thought it was a vaccuum leak in the hose, which got worse, I thought it was a fuel filter when it was the MPS/Dizzy at fault.....

I *DO* have a 1.7 MPS......would that work okay or would it be way too lean..?

I read from my BOSCH fuel injection book that if you unplug TS2, the engine will run more rich....but IIRC if you unplug the CHT, it wont run at all.....so is the book referring to the intake air temp sensor, and could this possibly come close to offsetting the lean condition caused by the new 1.7 MPS ???

I'm just tossing ideas around. This condition is getting progressively worse now though.

[lapuwali]

It's my considered opinion that in a few years the only 914s (or any other D-Jet cars) still using an MPS will be concours cars. All the rest will either be running carbs, or an aftermarket EFI system. MPSs are essentially unrepairable, and they're getting so expensive that the cheaper EFI systems will be price competitive pretty soon.

Before someone asks, it's not practical to make a replacement MPS diagphram, as the original is made out of some unobtainable material (some say beryllium, which is expensive, hard to machine, and highly toxic), and at least one attempt at remaking them in other materials produced units that at least Cap'n Krusty said are junk. I'll take his word on that.

It's also not practical to make an electronic replacement of an MPS using a modern solid-state MAP sensor, due to the way the MPS ties in with the stock ECU. I'll direct you to Paul Anders' site on D-Jet (use Google) for all of the gory details of how the MPS works, but suffice to say that you'd need to duplicate about 80% of an aftermarket ECU to make an electronic MPS that just plugged into the stock ECU. It would be easier to just add the remaining 20% of missing stuff and have a full, tunable aftermarket ECU.