PFF - Pennock's Fiero Forum, PDA Edition

Programming ecm help (Page 2/2)

ericjon262

JUN 12, 02:01 PM

quote

Originally posted by Raydar:

I have never even seen HPT, but I have used Tunercat OBD1 and OBD2. (I bought my OBD2 before the rights were sold to JET.)
I find the list of available parameters/options quite impressive, although I haven't done much with the OBD2. I was able to firm up the shifts in my Silverado, and have used it to "turn off" any number of troublesome trouble codes.
"What do you mean 'Catalyst Efficiency'?! Go... away!" (I do care about our environment, but the car had a brand new cat, and was still bitching.)

it's worth mentioning, that TC OBD2 VDFs for the V6 engines even have parameters for DBW throttle in it, a feature only offered on late 3800 F-bodies

the big fail of Tunercat OBD2 is that it doesn't natively datalog, so you can't datalog and tune in the same application. I got Tunercat OBD2 the expensive way, buying a Moates Roadrunner OBD2.

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"I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."

cognita semper

shemdogg

JUN 12, 05:01 PM

Hey I appreciate all the replies! That pcmhammer link didnt work but I did find some good info digging around in there, mainly that this stuff is waaaay over my head lol. But I found this page that kinda spells the procedure pretty simply-

https://github.com/LegacyNs...wiki/Getting-Started
opinions?

I do have a copy of tunerpro I downloaded yesterday, but I need a cheap interface cable. I see some cables like the vag-com(lmao) that have the obd2 connector going to usb, then theres some that have a pc board in the obd2 connector and a usb pigtail. Whats the difference? I already have a code scanner so dont need that. Not looking to get crazy w tuning this 3800sc, just want it running for now. Any all all help appreciated!

shem

ericjon262

JUN 12, 05:16 PM

quote

Originally posted by shemdogg:

Hey I appreciate all the replies! That pcmhammer link didnt work but I did find some good info digging around in there, mainly that this stuff is waaaay over my head lol. But I found this page that kinda spells the procedure pretty simply-

https://github.com/LegacyNs...wiki/Getting-Started
opinions?

I do have a copy of tunerpro I downloaded yesterday, but I need a cheap interface cable. I see some cables like the vag-com(lmao) that have the obd2 connector going to usb, then theres some that have a pc board in the obd2 connector and a usb pigtail. Whats the difference? I already have a code scanner so dont need that. Not looking to get crazy w tuning this 3800sc, just want it running for now. Any all all help appreciated!

shem

IIRC, PCM hammer only supports V8 PCM's, and that a V6 version is being worked on.

I sent you a PM.

Dennis LaGrua

JUN 15, 12:27 PM

quote

Originally posted by ericjon262:
While I only have minimal experience with HPT, I don't think it's the best, Tunercat OBD2 (Jet DST) has way more parameters available to tune, including things needed for manual transmission options.
the Developers of PCM hammer are working on a interface and program to read and write the V6 PCM's, but unfortunately it's not supported yet.

I favor HPT suite as when you scan, you can choose any and all parameters, plot one against another, see ongoing graphs of operation, and have all scanning points at every RPM, MAP, MAF, TPS and O2 values. You can also plot KR's in relation to RPM and MAP readings etc on a chart and make your own charts.
As for the editor I believe that is quite extensive also having the ability to not only read but chart and graph all operating parameters under every operating condition. It may not be for everyone but I find it pretty versatile and its done the job well but the drawback is that its costly.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

ericjon262

JUN 15, 09:51 PM

quote

Originally posted by Dennis LaGrua:

I favor HPT suite as when you scan, you can choose any and all parameters, plot one against another, see ongoing graphs of operation, and have all scanning points at every RPM, MAP, MAF, TPS and O2 values. You can also plot KR's in relation to RPM and MAP readings etc on a chart and make your own charts.
As for the editor I believe that is quite extensive also having the ability to not only read but chart and graph all operating parameters under every operating condition. It may not be for everyone but I find it pretty versatile and its done the job well but the drawback is that its costly.

it's especially costly if you try and tune more than one vehicle, or are trying to do development which requires changing PCM's.

my take on each of the 3 main options we have:

HPT-

Good data logging,
expensive.
have to buy credits to tune more than one PCM

DHP-
can tune as many cars as you want
no further platform development
can be a bit clunky.
due to obsolecense, can be hard to acquire unless you know someone willing to provide "backup copies" of the software.

Tunercat OBD2 (Jet DST is similar, but I'm not sure how the VDF's and licenses work)
tuning options based on which definition files(VDF's) you have purchased, no restrictions on how many cars per VDF (probably the fairest for the producer and consumer)
highly developed
no datalogging.
hard to get/can get expensive where available.