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I have a 1992 B4C 1LE camaro , had a TPI 305 5 speed now I just built a 880 vortec block, eagle rotating assy with flat tops, blue print engines aluminum heads zz4 cam 1 3/4 headers into a 3 inch exhaust SD vortec tpi lower and edelbrock hi flow runners and a ported stock upper with a 52mm tb and a set of 22lb ford injectors and has 10.1 compression ratio. anyone have a good vendor /? think it will be ok to start up on the stock prom ?Attachment 12688
Are you still using the original 1992 305 TPI computer?
For now yes...hope to swap to a better ecm later.
Perhaps you are up to the challenge of doing the chip yourself?
Link of information for the stock computer you are using: http://www.gearhead-efi.com/Fuel-Inj...Information-8D
There is some "Internet Hype" about custom chips, "tell us EVERYTHING you did to the engine" so we can sell you a chip. The Hype is simply that, Hype!
Some helpful thoughts about building your own "Starter Chip".
Start with a known good factory chip file, or .bin file. Verify the injector flow rate in the "Starter Chip" is correct. Remove unnecessary functions like VATS and / or Emissions. Find a factory ZZ4 camshaft timing table and adapt that timing table to the "Starter Chip". Perhaps a Factory LT4 timing table is close enough if you can find a ZZ4 camshaft timing table.
The expense of your engine build is not the typical "Budget Build", so include a Wide Band Oxygen Sensor (WBO2) Gauge https://www.youtube.com/watch?v=qXqTxrzjwNA The WBO2 IS A MUST HAVE TOOL! Would anybody in there right mind using an Eagle rotating assembly not use a calibrated torque wrench? I would use a calibrated torque wrench even on a factory rotating assembly! Using WBO2 is the ONLY Way to accurately build, not buy a chip. Knowing the AFR is the only way go, when the challenge is FAST GOING!
Myself and other members could help you with a "Good Guess" starter chip, likely as good as or better than the "Internet Hype" chips vendors. A good plan would be to take the chip building challenge yourself and let the members here help you along the way.
One option to doing the chip yourself is to use an Ostrich 2.0 chip emulator so you can make chip changes even with the engine running. http://www.moates.net/ostrich-20-the...eed-p-169.html
Using the Ostrich 2.0 allows members to post chip files / .bin files that you can download from gearhead then Upload into the Ostrich 2.0.
dave w
Yea Id like to learn to tune, I have the 1320 bluetooth adapter for datalogging, just hate to spend money on tuning stuff for this ecm if Im just gonna swap it out for a later one that uses flash instead of a chip. fired it up last night, set the dist to No.1 at 10 degrees and it lit right off.
https://photos.app.goo.gl/hYk49QHcmM0Ki2DU2
Attachment 12694Attachment 12695
The original TPI computer is still a very good computer. There is a TREMENDOUS amount of software and hardware support for the original TPI computer! Of all the OBD1 computers available, the 1227730 ECM is undoubtedly the most thoroughly "hacked" OBD1 ECM ever!! Virtually all the "hacked" 1227730 ECM information can be downloaded for FREE! The Ostrich 2.0 makes the original TPI computer FLASH, even with the engine Running!
If you try the Ostrich 2.0 and later decide to move on to something else, the resale value / market for a good used Ostrich 2.0 is strong (about 75% of new)! Finding a used Ostrich 2.0 is not an easy find, it's a very good product.
If you purchase an Ostrich 2.0, I'll provide you with FREE starter .bin file. If you shop the internet for a custom chip, you'll likely find the price of an Ostrich 2.0 is less $$$ than a custom chip!
dave w
Sounds like a plan, Ill double check the ECM number when I get home from work, working 12 hour days this weekend.
Here is another question, Can I used the same ASU to tune my 2000 tahoe limited with the 5.7 vortec ?
I think Not, the Ostrich 2.0 is for OBD1 vehicles (usually 1986 -1995), the 2000 Tahoe is OBD2.Quote:
Originally Posted by Jim_Rockford
dave w
yea I read that and didnt get a chance to delete it
Next question, does the Ostrich 2.0 do everything of will I need a socket adapter . I checked and it is the "730" ecm
Hello Jim_Rockford,
The Ostrich 2.0 will work with the 1227730 without a socket adapter.
Sorry for the late reply, Im working on moving to Fla. I drove the car yesterday, runs pretty good, having clutch problems so I couldn't drive it like I stole it, I hope to be able to start on getting this stuff when I get down there.
Attachment 12747
OK Im down in Fla and kinda settled, Im gonna order all m stuff to tune with, I drove the car some more, and it loads up in 5th, you have to pull it down into 4th to drive it, Can I send someone a data log and get a temp chip to tide me over till my crap comes in? just found one on Ebay for 162 shipped . figure that wasnt bad...
I could help you with a chip. I would use the Moates.net G1 adapter, with the chip installed into the adapter, see attached picture.
Send me a Private Message (PM) if your interested in the details. It's likely the parts from Moates.net will get to Florida faster than I can get parts to you from Washington State.
The G1 adapter can also be used with an Ostrich 2.0 chip emulator. (see picture below)
dave w
G1 adapter ordered the other day so I should have everything now. really wish I would have ordered the adapter the same time as the ostrich but someone said I didnt need it.
OK fixing to start tuning, I noticed the chip is AXYC that come up as a 90 f car 305 5 speed, Mine is a 92 ..... soory I had it listed as TC it was actually YC ok I found someone else on line that had a 92 B4C 305 /5 speed that had the factory replacement ECM with the same chip so that doesnt seem to be a problem
OK Im kinda lost, I have a good deal of paperwork printed out describing what all the functions do, but I really dont know where to begin with my tuning, If I install the tuning adapter without a chip piggybacking it, I will not have any tune correct? ok I found a .Bin file from a factory 92 5.7 a4 factory replacement memcal, opened it up in tunercat and set the manual trans, and adjusted the timing chart down a bit in the upper rpms, knowing the vortec chambers wont need that much timing, it was pretty high. Also is there a way to read the tune off my current chip? My car has always had the primary fan come on , eve if the temp switch is disconnected and I wondered if that was a cop tune thing to keep the engine cool as possible .
OK Ive been getting some work done to her, Shes running and driving and I finally got off my ass and welded up the exhaust , and welded in a extra O2 bung right at the y pipe merge, and picked up a used LC-2 wideband and Im gonna get it installed thenext warm day, but Im having fits with My rockers and valve covers, bought some tall aftermarket covers because my vette valve covers where hitting the top of the polylocs and not letting the gasket seal so I had oil leaks that scared me for a min. My plug wires where shit, kinda knew that so I got off my wallet and bought a new set of under header taylors, and figured out the remote coil really needed to be grounded to the engine not laying around loose. . So now its running alot better, found a tune for a 92 5.7 auto camaro and loaded it into the ostrich and played with a few settings , and i forgot the cam has alot more over lap. so That explains the ecessive richness at idle. I,m gonna try and tune it in open loop , but at least now I can drive it and it sounds bad ass, but its breaking up in the higher RPMS , I gotta go get a new timing light and reset the timing. Also installed a nice gear reduction starter I got off a 96 camaro LT1 , so that solved the not starting when hot issue. Its getting there and I couldnt figure out why I couldnt datalog with TPRT and tonight while messing around I figured out it needed a ADX file..lol Im an idiot.
https://youtu.be/rxNqEVoeh_Y
it happens as everyone learns... where did you move to in FL?Quote:
Originally Posted by Jim_Rockford
I moved to FLA in may I think and stayed till august, I liked it, just wasnt finding the kinda work I needed. came to N.C. in august and finally had the time and money and urge to work on her. not working out though, it got greedy and drove it since it seemed to be running fair, I was loving the way it sounded with the exhaust hooked up and running on all 8 tanks to some new plug wires and timing set to a known value. burned the coating on my new headers . sad thing is it runs worse with the 350 tune and the 305 tunes seems alot better I drove it tonight with the 305 chip plugged back in. ran like a stripped ass ape, think it needs more fuel pressure tough, still had a slight stumble at the upper end of the RPM pull .
Holy shit I just figured out how to use the compare tool on turner pro. holy shit its like I know halfway whats going on how, I can see the differances in tunes between 2 or more.bins on any table...I can see it so much more clearly now, I was honestly about to give up. and go carb.
Going carb would be a waste and a step backwards. If you can tune a carb, you can tune with EFI.
The breaking up at high speed/RPM you speak of is because WOT is open loop, and I would guess your running lean. Alter your VE tables, and watch your wide band in these ranges. No factory chip (305/350/whatever) is going to *work* for you, some might have a few attributes to fit a certain situation better at times than others. I wouldnt look for pointers by reading other chips. If your engine isnt knocking or pinging (read knock counts too) then you dont have too much timing. A lot of timing is not neccessarily good, but most often extra timing will run better than too little.
Get a timing curve that doesnt knock or ping, and correct your fueling from there. Then you can fine tune the timing and fueling until you get something you really like.
biggest problem I have right now Is I cant get the data logs, I have the gauge setup,and tunerpro says its connected for DL but I get no readings Ive tried every .XDF I can find , nothing . I cant tune what I dont know, and I see in alot of custom tunes that alot of the tables that gm used for various things have been completely 0rd out, stuff like power enrichment vs rpm type tables Why the hell would they do that , can you compensate for that stuff in the primary charts? I did install my wideband and it gets super lean on any part throttle, and I need to verify my fuel pressure.
I've only been able to get WBO2 working with .XDF definitions $OD, $31, $OE, $E6, and $8D.
dave w
.XDF definitions $OD, $31, $OE, $E6, are generally used for most 1993 - 1995 GM Pickups, Vans, Suburbans, S10 / S15, including Astro Vans.
$8D definition is generally used for most 1990 - 1992 TPI engines.
dave w
yep Ive used $8D says connected but I cant gather any data...and I need to get an adapter for the serial cable on my wideband.
Sorry I didnt update the post, I had some other stuff come up in life and I was falling into a deep depression and had came up withthis crazy ass notion that i wanted to live in a van and travel the country so i bought a 12 ft box van and sold my camaro like a dumbass to fund the van build. But I have a new project and i'm on some different depression meds. LOL I ran across a guy that had a 1999 9C3 police Lumina withthe L36 3800 series 2 , always wanted one and then i got a steal on a 1999 grans prix GTP that has the L67 supercharged 3800 so I am currently swapping the L67 in place of the L36 and rebuilding the 4T65E-hd to go along with it.Attachment 15965