New OBD0 boost code
 

New OBD0 boost code. Thanks to Jason Parker for adding support to TE2.0 for this bin and letting me use it. Sooner or later TE2 willedit it right :)

http://www.pgmfi.org/phorum/read.php?f=12&i=2721&t=2721

I tried it several minutes ago in my turbo LS CRX w/ 450s. It idled well. NA/Boost transition was smooth. No vac issues!

Progress :)

Re:Guinea Needed for OBD0 boost code
 

That looks like a sweet map, too bad I don't have any chips to try it on. One thing I don't understand is in that screenshot, why is there no boost numbers in the "boost fuel map" or "boost ignition map"? If you try, please post results, thanks.

Re:Guinea Needed for OBD0 boost code
 

what engines does this support? PR4/LS motor?

Re:Guinea Needed for OBD0 boost code
 

This is a PM6 based map but will run on a lot of different OBD0 boards. (Check the PGMFI Wiki)

Re:Guinea Needed for OBD0 boost code
 

so what is this ... like a vtec map but w/ vac/bst instead of lo/hi ?

Re:Guinea Needed for OBD0 boost code
 

I believe it has 1wire VTec in it, but it's not like regular high cam/low cam VTec. You just enrich above your selected VTec crossover RPM.

Re:Guinea Needed for OBD0 boost code
 

no wackiness here - this bin has a stock table setup for NA, and has a table that is the same size and shape for boost. Currently working in PM6 codespace, although there is no reason for it not to run well on a PR4. Well, kinda. :)

No vtec support yet in this codebase, although I promise you it is coming. Trying to get things sorted out one at a time yknow?

Re:New OBD0 boost code
 

tried in my LS/turbo CRX, 450s, worked well.

Re:New OBD0 boost code
 

No more Hiccups, blundar?? How is the tune? Real rich? Thanks

Re:New OBD0 boost code
 

Blundar.. TE's multipliers are fix0r3d. Heh, multiplier validation routine didn't like the fact that it was a boost table instead of a high cam table (Ah la PR3.. remember what I said?).

Anyway, hit me on MSN andI'll link to you to the beta and you can see your pretty tune in living color.. like it's supposed to be. :D

Re:New OBD0 boost code
 

to help my understanding...

how does this rom work? it switches between maps based on IM pressure/vac right? how does the ecu do that? I mean im not asking how you wrote this but understanding it is key to tuning it right?

Re:New OBD0 boost code
 

Well, blundar has released a well commented DASM of the ROM (thank you Dave!!!) for us to understand.

Long story short, he basically calculates the highest point at which the MAP sensor routine can operate without throwing a code. If it's too high he sets a bit (to nidicate boost), if not, he lets thr routine continue as normal. If the bit is set, he replaces the MAP sensor value with something useable, and points it to the boost table, and then continues on with operation from the second table (boost tables).

Very cunning! ..Thanks Dave (and everyone at PGMFI) for all of your work, and sharing this information with us laymen! Three cheers! ;D

Re:New OBD0 boost code
 

dave thats a completely brilliant pice of coding. i like the way you shuffled things around etc. looks fantastic. hats off. any inspiration from the GM stuff i sent ?

Re:New OBD0 boost code
 

Sean, I'm going to change the way it works sooner or later. I like the GM multiplier table idea better where the last row of the VE table is scaled (unevenly) according to boost...

To make the boost portion of that ROM, I literally copied the last NA column, and then increased each column in the table by 4%... Trying to make an educated guess as to a good baseline tune.

If that's what I'm doing for tunes, why not just implement the code as a multiplier? That's my thoughts at least...

Spent last night integrating l3st4rd's new serial interrupt handler so the possibility of realtime programmability will be even closer.

OBD0 is hot again baby. Yeah baby, yeah!

;)
p.s. I posted another version of the code "try6.asm / try6.bin" that have a lot more comments towards the top about how things work instead of just in the appropriate piece of code. If you're curious, read it. Car should behave just like stock (and run off stock table) till boost, at which point you have a second table the same size as stock for the boost region. Total overkill, but...

Re:New OBD0 boost code
 

OMG Blundar you are makingme want to put the turbo back on :( WHY are you doing this to me..... I LOST YOUR ADDRESS i cant send you anything..... ;) PM it to me again please.


Also I wondered how is this bin going to run on DOHC motors I remeber a slight issue IN THE PAST on pm6 codes on DOHC motors like the ZC. ?

Re:New OBD0 boost code
 

no dave what youve got is pretty good right now. every once in a while becuase i like to tweak my Ve tables just so to vary the AFR depending on speed and load it create a small headach for the multiplier. so i have had to resort to setting my 100kpa clolumn for stioch instead of the 13.8-14.7 id preferably use. i like to keep the cobustion temps a bit cooler helps ward of knock going into boost. but with the WOT afr modifier i can accamodte this fariyl easily. ill bring the car down some time after christams and we will play with my tunning tools so i can show you what i mean.

Re:New OBD0 boost code
 

I put try11.bin in my 91 LS teg with a PM6. Idles at like 600 cold terribly. Warmed up on another chip and then tried it again...stalled it out.

Im not advanced enough to open a bin w/o TurboEdit so i cant play with anything.

Anyone else experience anyh idling problems?

Re:New OBD0 boost code
 

I tried try11.bin also, and it ran pig rich and wouldn't idle even when warmed up. I couldn't figure out how to edit it, so I guess i'll stick with ghettodyne until TE2.0 comes out.

Re:New OBD0 boost code
 

Ya.. TE2.0 can edit the bin just fine. There are a couple of beta floating around so I have people trying to see if there are any bugs.

Try11.bin is flawed. The richness isn't because of the tune. Dave and I went through some beta testing of some code while he was coding the ROM and I was applying his massive amount of feaures to TE2.0.

Right now, we're up to try16.bin, and I don't know if it's posted anywhere at the moment. I'm personally running this bin in my car right now and it's running perfectly.

Hrm, I'll just post it here so you guys can play with it, and feel the improvement of the boost code.. Check it out!!

http://index.driftkids.com/TRY16.BIN <- There you go! Burn that. Rev limits are stock, and Launch Control is enabled at 4000.

NOTE: With this bin, all you need is 450cc injectors. Boost or NA, it doesn't matter. 450cc injectors and you're set! It's hot! :D

Re:New OBD0 boost code
 

This code works!!


omfg... my dizzy is bad though
CYL Code 9
fixor it someone hahah

Re:New OBD0 boost code
 

Well, I am testing try16.bin in my 90 crx si d16a6 turbo and, I must say, it's working beautifully. I love not having those damn hiccups and the idle is way better and there is no more plopping exhaust when I decellerate. You are the man, Blundar. The only problem that I see is the cold-start, but I really don't give a sh*t ;D. Thanks bigtime.

Re:New OBD0 boost code
 

I think this post deserves a sticky ;D

Re:New OBD0 boost code
 

Let's just keep bugging Parker to release 2.0! Where do we pick up one of those beta versions floating around?