New to Custom OS's

[88s10]

can you get a custom os for a 98 pcm?

[BowlingSS]

can you get a custom os for a 98 pcm?

I think you have to be a 2001 or 2002 OS first.

Bill

[bK]

True, I'm just dying to get my wideband installed so I can start playing with more things

I'm in the same boat, order the wideband weeks ago, just found out the other day the order was lost, I just about died!

[sparkwirez06]

If somebody could clear this up? I have a 2000 pcm. i would like to install the custom os, the car is to be tubocharged. so i would like to be able to run a sd tune,do i need a new map sensor? can i use my present computer or do i need a 01-up? excuse my ignorance,but this is a lot of new info for me. i just purchased a efi flashscan commercial and an lc1 wbo2. THANKS p.s. if i new the hand held would be out shortly i wouln't have spent $650 on this new laptop!!

[Tordne]

If somebody could clear this up? I have a 2000 pcm. i would like to install the custom os, the car is to be tubocharged. so i would like to be able to run a sd tune,do i need a new map sensor? can i use my present computer or do i need a 01-up? excuse my ignorance,but this is a lot of new info for me. i just purchased a efi flashscan commercial and an lc1 wbo2. THANKS p.s. if i new the hand held would be out shortly i wouln't have spent $650 on this new laptop!!

Your current 2000 PCM is fine. All you will do is flash in probably an 01 or 02 V3 Custom OS.

As far as MAP sensor... If you are planning on running FI then you will need to get a 2 or 3 bar MAP sensor to measure accurately up to the 285 kPa mark. Part numbers are included in another post on this forum somewhere

Cheers,

[sparkwirez06]

Hey, THANKS, I just found them over in forced induction!!

[agreif]

If somebody could clear this up? i would like to install the custom os....so i would like to be able to run a sd tune,do i need a new map sensor?

I'm having the same understanding problem, even with the explanation. I've looked in the OS section, but don't completely understand what it allows you to do above and beyond the regular tuning. Here is what I want to do to get the best tune(based on what I read):
Run in open loop
run an SD tune
possibly run a dual spark map.

Paul was telling me the custom OS from EFI restores adaptive spark. I guess my question is, what changes between a custom OS and the factory OS if I want to tune with the factors above?

Sorry for all the questions. Just trying to get my bearings here.

Andrew

Just as a little clarification here I have a 01 4.8L that I'm putting a cam and exhaust on. No boost in my future so I don't need the 2-3 bar map.