MedVader

AUJP memcal for 90-92 7730 ECM with flash PROM installed SST 27SF512.

http://www.ebay.com/itm/90-92-CAMARO...item2c635862c1

memcal for 86-89 TPI 165 ECM with flash prom installed SST 27SF512

http://www.ebay.com/itm/1986-1989-CA...item2c64cded8d

This dude will even set up the memcal basic stuff for you to get that car running for you to tune from there.

MedVader

Also engine bay 7730 ECM with modded flash prom for $xxx (mod edit: no pricing allowed unless a sponsor).

http://www.ebay.com/itm/90-92-GM-122...#ht_978wt_1396

EagleMark

Or you could read here on Thirdgen where that was developed and do it yourself for a couple bucks?

utilityguy2

iTrader: (1)

Thanks MedVader for the Kind words.

I wish it were true, but it costs me way more than a couple bucks! I have quite a few hundred dollars in just equipment and a test bench for testing and verifying them. Programmable chips and V6 Memcals are getting much harder to find and way more expensive. Then you need the knowledge to solder the chips and program them and the time to do it. Many people don't want to do that.

I have previously given full credit to 3GO for getting me started on this venture but I need to give thanks to the people on this board that have helped me set this up to help those that have special needs and want an economical Memcal to get their car started.

Thank to RBob for his quick thorough answers to all of my questions and Tunedperformanc for his great help and support. EagleMark and his fantastic website Gearhead-EFI has also been a great resource for information.

I want to thank everyone that has bought a Memcal from me and especially the people that publicly give my work a thumbs up. I appreciate my customers and gladly spend time on the phone and through emails everyday helping them with their projects.

Utilityguy

EagleMark

That's you?

Well it is a reasonable price for a needed piece so...

utilityguy2

iTrader: (1)

Thank you Mark!

1tpi

I just bought one'

red rock

iTrader: (2)

peterc005

Not too hard to do it yourself, but you need to buy tools and work thru the learning curve.

Looks like a good service and think I'll give it a go.

EagleMark

It really is. Lots of guys can't or don't have the time to DIY, or the time it's a good deal for the cost.

I'm just glad it was someone who gives back to help others, not just someone taking the DIY work for profit.

utilityguy2

iTrader: (1)

Once again, Thank you.

DeathStarr89

iTrader: (1)

I was doing something similar 6-8 years ago, adding sockets to the stock memcals and then selling them with custom burnt chips installed. This price seems fair for the work involved. Good luck!

utilityguy2

iTrader: (1)

Thanks

Untamed Z

Just ordered a custom tune MEMCAL from utilityguy2 . I don't just order from anyone, especially when it comes to a tune, but he is held in high regards here, and I felt he was absolutely my best choice.

utilityguy2

iTrader: (1)

Thanks very much!

1tpi

They work great just bought 1 more, sure beats the uv light

The_Punisher454

I do chips like this for my myself, family and friends, but I once considered doing it on ebay just like you are doing. I think the price is just about right, not giving them away, while not ripping people off. I also noticed your solder work looks good in the pics. Its sometimes hard to de-solder cleanly without any melted spots on the plastic.

utilityguy2

iTrader: (1)

Thank you.

91zl98

I would like to get a extra memcal But where do I put the 3.9K resister ? Is that something you can just enable ? Its stated its disabled. Can you do programing for a 383 If I list the engine parts ? I know there is not a knock sensor for a 383 but I would like to use a 350 knock sensor for knock retard.

utilityguy2

iTrader: (1)

PM sent

91zl98

I have not received a message ?

91zl98

got your message forgot to ask were does this 3.9K resister go to make the knock sensor work ?

utilityguy2

iTrader: (1)

You don't use a resistor to make the knock system work.
You can use a 3.9k ohm resistor to disable the knock by tricking the ECM into thinking it has an operational knock sensor.
What I said was to use a 3.9k ohm knock sensor, which is for the SD TPI V8 engines, IF the programming for it was enabled in the Prom. The Knock sensor is enabled or disabled in programming.

91zl98

ok, so this can be done on the memcal cal 29 and ground and just toss the knock board. In I bet you could make a tpi maf esc and use B8 on a 1227730 ecm ?

92 RS Invader

iTrader: (1)

Good thing you mentioned that you disable the knock sensor. I was about to purchase a memcal from you. That's a low blow that your selling modded MemCals that has a disabled failsafe such as the knock sensor circuitry. Are you disclosing this to your customers? I think that's bad business. I'd hate to know that someone's engine got destroyed due to detonation.

Tuned Performance

iTrader: (92)

I think That is a good idea wonder if it would work

1tpi

What will it do if I have a working knock senor

Tuned Performance

iTrader: (92)

Knock filters and knock sensors are based on frequency and are matched to each other for cid. If you have a 350 knock sensor and a v6 knock filter you may get false knock counts. I believe utilityguy2 is disabled the code knock vs coolant temperature so no retarding will be done bye them ecm. Im not sure and am not speaking for him just a though.

Tuned Performance

iTrader: (92)

Im not sure if this is what your looking for post #62

http://www.gearhead-efi.com/Fuel-Inj...-1226870/page5

1tpi

Ihave a knock sensor, he says the knock filter circuitry has been disabled
will my knock sensor work if I have it enabled in the chip or
will I get a code error

Tuned Performance

iTrader: (92)

I have no idea if he just disabled the error code only for code 43 or just 020C and O20D if O20C and 020D are maxed out the knock sensor input will never work.

utilityguy2

iTrader: (1)

Thanks to tunedperformanc for answering these as I was out of town.

RS92, Yes it is fully disclosed. Many, if not most people have modified engines which a stock knock filter will not be accurate for anyway. Many want the knock circuit to be disabled. For instance it would be foolish to run a 383 with a stock knock filter and since there never was a factory one what would you want to do then? Even as engines age, the knock signature changes and shows a lot false knock.

If someone wants it enabled for a pure new stock engine, I use the 3.4l Memcal which has almost exactly the same filter, as the cylinder bore is the same. For those that want a GM stock filter, I have those also.

In my opinion, the knock setup for these engines was a poorly designed system as any external noise or worn parts could indicate knock with the resultant timing changes. Perhaps even worse, the knock sensor may not detect detonation when there is knock and you would not know it.

I much prefer doing the knock the old fashioned way of listening to the engine to see what it needs. Don't put all of your faith in that system.

Even with knock disabled, you can still see the knock count when logging to see if there is knock at which point you can do the timing changes yourself. I hope that clears some of the questions up.

utilityguy2

iTrader: (1)

No you will not get a code as long as you have the 3.9k ohm knock sensor. Yes it will work but since the filter is for a different engine with a different bore and different noise signatures, it may give more or less knock counts. The knock filters are different on every engine and engine combination so there are possibly hundreds of different ones. Even on a stock filter, as the engine wears, you will get more knock counts and as a result timing will erroneously be pulled. This affects performance and mileage. Basically a improperly timed engine.

utilityguy2

iTrader: (1)

In my experience, with my car, I see less knock counts with a V6 filter and a 355 V8. Maybe that's only mine but it's what I see.

utilityguy2

iTrader: (1)

I do them all.

peterc005

@utilityguy2 - thanks for the interesting posts about the knock sensor.

I want to buy one of your memcals shortly but and still undecided on a couple of the options.

Your service seems good and at a fair price.

92 RS Invader

iTrader: (1)

Dude, Im in my early 20's and I cant tell a Deer Tick to a tick in a engine. Are you telling me that GM had a bunch of engineers who didnt know how to design a properly working knock sensor? I think you are WAY over your head on your claim. I'd rely on the technology of the era than to listen to a knock while making a tune. SOme of us dont even know what to look for in knocking with our naked ear. None the less, Engine Knock aka "ping" doesnt have to be audible to know its there. So if you cant hear the knocking, what good is "your" method of "old fashioned"? Besides, even if you adjusted in your so called "Old Fashion", you still have the ESC Module. SO all this great GM engineering is junk in your eyes?????? I dont think so. You are cheating people out of their money. Your price of modded v6 memcals that are hacked is a bad choice for the TPI V8 community. Id rather spend $89 on a stock TPI Memcal or G1 socket piggy back with a EPROM, or a moddified V8 TPI Memcal, not a moddified V6 Memcal.

On a auction site, there is a this "89 Camaro 305 TPI Auto PROM MEMCAL CHIP 1989 APYM 3493 firebird trans am Iroc" which has the fail safe knock sensor stuff for $109. For $20 more, you have the safe reliable Knock Sensor feature.

peterc005

Personally, I'm happy to spend about a hundred bucks to save having to buy the programming tools and then learning all of the TPI ECM nuances.

This guy seems to know his stuff and if he picks up a few bucks for his time on the way thru good luck to him.

If was charging a thousand bucks you'd expect a lot, but for this sort of money it's good value.

It's also good to have this sort of support for our cars and we should encourage services like this.

RBob

iTrader: (1)

This thread has run it's course...

RBob.