Post by: TopNotch on August 18, 2014, 11:06:09 am
(And he mentions our digital EGR kit.)
Edit: This is a long (1 hour, 23 minutes) video. I recommend you download it rather than trying to watch it on Youtube. There are a number of free Youtube downloaders available online, such as Real Player.
Post by: LostNotForgotton on December 19, 2014, 02:06:52 pm
Post by: Fierofool on December 19, 2014, 05:48:04 pm
I was wondering what had happened to you. Glad to see you're still around. Merry Christmas.
Post by: LostNotForgotton on December 22, 2014, 04:18:32 pm
I have decided to completely stripped out the interior of my 87GT two weeks ago to give it a makeover. I re-did the headliner, repainted the interior trim panels with the Fiero Store color-matched paint and steam cleaned the carpets. The only thing I haven't done is buy Mr. Mikes seat covers. For right now I'm having to settle on some cheap seat covers from Pep Boys.
I also bought (and doing new videos on) a heads-up display from Tom's digital electronics (http://www.tomsdigitalelectronics.com/new_-_heads_up_display). It seems pretty cool. I thought it was something that he designed like his digital gauges but this looks more like a generic Chinese product. Looks cool though. It's wired in and I have it working. I just have to finish calibrating it.
I also picked up the new door skins from the Fiero Store that provide a door speaker hole. I'm going to be doing a video on that install as well. I want to retain the existing speakers so I'm currently wiring in an amplifier to power the door speakers. I plan on bridging the amp to also power a custom fiberglass sub-woofer enclosure in the foot well. I molded the box for my 88 MERA but I'll probably just swap it between the two cars until I get around to making one for the GT. I think my floor sub pushes more air than any center console sub I've seen and with the passenger seat all the way back it still leaves plenty of leg room. I can't wait to finish this up and get some new videos posted. That's my Christmas present to my self. 8)
Post by: Fierofool on December 22, 2014, 08:20:09 pm
I can say that my favorite band is from Athens so that has to buy me some brownie point ;)
Just 18 miles from me. I saw them playing in their early days before even they knew who they were. REM
Post by: LostNotForgotton on December 23, 2014, 09:17:56 am
Post by: LostNotForgotton on December 23, 2014, 09:42:12 am
I have to calibrate this new heads up display by driving a certain speed and then set it and then I have to rev the car to a certain rpm and set it. My speedometer works fine but my tachometer reads a little high so I won't be able to use that to get an accurate reading. At 60pmh my tach reads 3800rpms when I believe it should be more like 2900rpms. TunerPro looks like a very useful piece of software once you get it configured properly but it's that initial configuration that's killing me.
Post by: f85gtron on December 28, 2014, 02:43:46 pm
Anyways I'm inspired to do this mod now. This may be a good time to do the ar cruise mod too.
Is the 7730 obdII?
Ron
Post by: Fierofool on December 28, 2014, 05:25:49 pm
Post by: LostNotForgotton on December 28, 2014, 10:04:47 pm
I do actually recommend this conversion. I can confirm that the engine is more responsive and I did notice almost a mile per gallon increase in fuel economy. It's not a large increase but an increase none the less. I absolutely love revving the engine and hitting the rev limiter. A normal Fiero ecm makes you feel like your going to blow the engine before the limiter kicks in but the 7730 makes it sound so nice. If you want to hear it just check out my other YouTube video on adding a true cold air induction. I do a before and after on that and I rev it to the limiter quite a few times. You should check out my other videos or I can post them for ya to check out.
My cruise control didn't work prior to the conversion so it'd be a bit more than just doing the conversion for me. I do feel I should make a follow up video and do the AC wiring conversion. There have been more than a few times I was wishing I had a working AC. I already have a new r134 Fiero compressor ready to install. Just gotta get motivated to do it.
Fierofull is right. It's still an OB1 ecm but it monitors more engine aspects. It is also more tunable. You can use TunerPro to change and tune the car yourself but unlike OBD2 as soon as you disconnect the laptop the car goes back to the original tune. You have to burn the tune to the chip with a chip burner for the tune to take. I have tried a couple times to use TunerPro but haven't been able to get it to communicate with my ecm. I think I just need a little help in getting it configured properly.
Overall its not a difficult conversion. If you know what your doing you could knock it out in a weekend or two. It took me 3 weekends but that was mostly because I had a lot of camera and lighting adjustments as well as taking time to explain everything I was doing. If you get stuck I can talk you through some issues 8)
Post by: f85gtron on March 01, 2015, 06:57:20 pm
According to Darth instructions:
1) The location of serial data to aldl is a9, however, the gm published pin out showed a8.
2) D6 and d7 (injector grounds) i spliced to a12 all grounds to engine block. Is that ok?
3) Shift light location as F6, but gm shows f1
4) what's the deal with D12 and d2? For ac, when are they necessary? It said "optional".
Ron
Post by: TopNotch on March 02, 2015, 07:51:51 am
Post by: LostNotForgotton on March 02, 2015, 10:46:57 am
I've pinned my harness and have run into a couple questions.....
According to Darth instructions:
1) The location of serial data to aldl is a9, however, the gm published pin out showed a8.
2) D6 and d7 (injector grounds) i spliced to a12 all grounds to engine block. Is that ok?
3) Shift light location as F6, but gm shows f1
4) what's the deal with D12 and d2? For ac, when are they necessary? It said "optional".
Ron
1) The location of serial data to aldl is a9, however, the gm published pin out showed a8.
Are you looking on the Fiero ECM side or some shop manual for a 7730 vehicle? In my pinout I see the serial data as A8 on the Fiero ECM which gets moved to A9 on the 7730. I show A9 as the diagnostics enabled for the Fiero which gets moved to E12 on the green clip for the 7730. These are the two pins you’d ground out with a paperclip to check the codes in service mode. I've paperclipped these pins and the SES light flashes a code 12 so it seems correct. Are you wiring it with the $88 pinout?
2) D6 and d7 (injector grounds) i spliced to a12 all grounds to engine block. Is that ok?
Yes, this should be ok. I did something similar to make it easier to run one wire to the engine block instead of having to fit multiple grounding wires through the firewall which all serve the same purpose. Since this isn't high voltage the 18 or 16 gauge wire should be sufficient for grounding multiple sources.
3) Shift light location as F6, but gm shows f1
My instruction also show the location of the TCC/shift lamp control moves from pin A5 to F6. That seems to be correct for my car as my TCC is locking up and working correctly. Maybe there was a slight difference in your year/make/model car. I would assume that F6 is the correct pin on your 7730 but I don’t know what your donor car is or maybe it’s how the ECM gets reprogramed. Since I don’t know how the ECM’s get reprogrammed I don’t know if they use a certain format for all Fiero’s regardless of the donor’s original programing.
4) what's the deal with D12 and d2? For ac, when are they necessary? It said "optional".
This one is gonna stretch my memory a little. I spoke to Darth about the AC options and he said that there are several options for AC. You could reuse the Fiero AC which I think required taking the sensors out of the compressor and using different ones that are compatible with the 7730 ECM or you could use a compressor that was compatible with the 7730 ECM. That required doing more rewiring and was a bit more complicated. What your looking at is probably the option for using a non Fiero compressor. The AC is optional wiring and I didn’t do it at the time although last summer was particularly hot and I was wishing I had done it so this spring or summer I my actually wire up the AC compressor. I have a new Fiero compressor in stock so it’s just a matter of putting it in and running the wires. If your more serious about doing the AC wiring I can try and dig up my old emails with Darth and let you know in more detail.
Post by: f85gtron on March 02, 2015, 01:17:29 pm
Post by: f85gtron on March 03, 2015, 05:20:59 am
Keep in mind, these are questions I'm asking before I've installed everything..... so I'm probably jumping the gun.
The ac appears to be stand alone, but the 7730 needs to see when the compressor cycles to raise the idle via c9? Or is that d12?
Ron
Post by: Fierofool on March 03, 2015, 08:59:01 am
Post by: LostNotForgotton on March 03, 2015, 09:42:58 am
The serial data is the one that provides data to the ALDL and the diagnostics test input is the one that when papercliped, puts everything into diagnostics modes. I only have a question about the light, which works on yours, so that's answered, but what about data? Are you able to pull down data from the 7730?
Keep in mind, these are questions I'm asking before I've installed everything..... so I'm probably jumping the gun.
The ac appears to be stand alone, but the 7730 needs to see when the compressor cycles to raise the idle via c9? Or is that d12?
Ron
What your touching on is probably my biggest challenge at the moment and your question might help solve the problem. Since doing 7730 conversion I have never had any success with getting my laptop to successfully communicate with the ECM using TunerPro. I've double checked wiring from the ECM to the ALDL plug and it all looks correct based on the pin-outs I have. I've always chalked it up to my lack of knowledge of setting up the proper BIN and ADX files. I always figured that so many others had done the same swap without any problems that it couldn't be a pinning issue. The last time I attempted to try TunerPro was last summer and I was finally able to see some readings but it was all garbled. For example the tach readings were all over the place even when the ignition was off. It could still be a setup issue I have with TunerPro, an incompatible ALDL cable, bad ECM or needing to re-pin the ECM with your information. It's to cold and we have to much snow at the moment but once it warms up I'll look into it some more.
Post by: f85gtron on March 08, 2015, 11:56:36 am
Ron
Post by: Raydar on March 08, 2015, 12:11:40 pm
Post by: Raydar on March 08, 2015, 09:27:58 pm
Post by: Raydar on March 08, 2015, 09:41:18 pm
Post by: WV Mike on March 10, 2015, 06:02:09 pm
Post by: f85gtron on March 29, 2015, 08:07:17 am
What your touching on is probably my biggest challenge at the moment and your question might help solve the problem. Since doing 7730 conversion I have never had any success with getting my laptop to successfully communicate with the ECM using TunerPro. I've double checked wiring from the ECM to the ALDL plug and it all looks correct based on the pin-outs I have. I've always chalked it up to my lack of knowledge of setting up the proper BIN and ADX files. I always figured that so many others had done the same swap without any problems that it couldn't be a pinning issue. The last time I attempted to try TunerPro was last summer and I was finally able to see some readings but it was all garbled. For example the tach readings were all over the place even when the ignition was off. It could still be a setup issue I have with TunerPro, an incompatible ALDL cable, bad ECM or needing to re-pin the ECM with your information. It's to cold and we have to much snow at the moment but once it warms up I'll look into it some more.
I've been doing a lot of research on this topic, and my search had lead me to believe the problems with pulling data from the 7730 are switching-method related.
I don't know which cable you're using, but it seems that the "two transistor" type doesn't work well with some laptops. The "Max232" ic controller type seems to work properly with all types.
The data stream is not a stream at all. Opposite of the older, 160 baud data stream, the 81xx data is in packets and travels back and forth up and down the line, so in effect, instead of just "reading" data, you're trying to "communicate" with the ecm.
I hope this helps.
I haven't built my cable for the 7730 yet, but plan on just adding the second transistor to my existing one-switch setup and try it first, then build the Max232 rig if the other doesn't work.
Ron
Post by: f85gtron on April 19, 2015, 10:07:34 am
Max232 ttl usb interface. 9bucks on eBay, install driver, then break out ground pin to ALDL ground, then combine the tx and rx pins together and plug other end into ALDL data. That's it!
Post by: f85gtron on April 19, 2015, 10:13:33 am
I followed the Darth printout exactly and everything works perfectly. I feel guilty for questioning it! The only thing I've got a beef with is the shift lamp. Even with a specific tune for my trans, it still illuminates in top gear. That will either get corrected, or unplugged ;) ....problem solved.. buwahaha
Post by: f85gtron on June 27, 2015, 10:40:00 am
I finally resolved the light, and the motor runs better just by changing the .bin file on the chip. There's a formula to use to calculate your n/v ratio for each gear. Once the results are entered into the .bin, the other dependent tables and scalers can then pull from it and calculate accordingly.
N/v=(gear ratio x 336)/tire diameter
Example: m17 4 speed
First 1.95 and a final of 3.65 and stock 14 inch 215/60/14
N/v=([3.31×3.65]×336)/24.2
N/v=168 for first gear
Any questions? :o
Post by: Raydar on June 27, 2015, 10:46:56 am
If so, that surprises me. I always figured that those calculations only affected the shift light.
Good info!
Post by: f85gtron on June 27, 2015, 12:24:10 pm
Post by: f85gtron on October 19, 2017, 10:59:22 pm
No, it wasn't my imagination about the motor handling different. Not only shift light, but also spark advance is ramped up at differing rates, based on what gear the calculation is for and throttle change rate. It's so complicated that it's voodoo.
It's labeled as rpm derivative spark in $88 and $A1.
If you're a perfectionist like me and want to squeeze every ounce of performance out of your tune, calculate and enter the correct nv ratios for your rig!
Ron