Hi,

My 83 300D has 215k, and makes 9psi of boost, max.
I have a loner 83 300D with 225k that is significantly faster than mine. My 300D is by no means a slug, it can merge, keep up with traffic and accelerate well. But, 0-60 and 55-75 definitely feels a lot stronger in the loner 300D.

My car gets 27.5-30 mpg, so it doesnt immediately indicate that anything is wrong. Both cars start easily after sitting in below freezing temps overnight.

So what could it be that makes my car feel a lot slower?

Will upping the boost from my 9 psi to say, 11.5psi make that much of a difference? Thats the one thing that immediately triggers my thoughts, since my turbo is a little weak. If this is the case, and then I can get the full fuel enrichment, etc. it ought to go better.

But then I have to think, maybe my boost is low because Im not getting any ALDA enrichment... There is oil at the alda side of the boost tube... Neither my or the loner car's alda has ever been touched. But, if my ALDA was broken, the car would essentially go like a non-turbo car, making about 85hp or so, right? I definitely feel more acceleration as I hear the turbo spool up, so I assume that fuel enrichment is there, and the ALDA is working at least somewhat. But, I dont know if its working much at all.

So,

How can I check to see that the alda is helping performance much, if at all? would disconnecting it alltogether and then driving it show me? I assume if its more or less the same with the boost line disconnected, then the alda isnt working.

Would injectors that are a bit worn make much of a diference? My first 2 injectors appear to leak a slight bit.

Is it typically time to get the IP calibrated and gone over by a bosch shop at 215k? Maybe that would be it?

It is really kind of annoying that here I thought my car was really great, but now I see just how strong my car ought to be.

So any help or advice would be great. I really would like to get that extra off the line power that my car ought to be making. I just dont want to be disapointed when my boost controller comes, if performance gains are negligible despite extra boost.

Any suggestions would be most appreciated.
Thanks,

JMH

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)