I'm converting a friend's GTA from $32 to $6E tomorrow. I have a spare $32 memcal handy, that I plan to mod an EEPROM into, and I noticed that there's no knock board on it. Does the $6E require the knock board on the memcal or does it use the external module? I haven't pulled his stocker out yet so I don't know if it's got one or not.

TIA

 

Why? In the past a lot of guys did convert from $32 (and $32B) to $6E because the $6E was more understood and better defined than the $32 & $32B. But a lot more is known about the $32 & $32B today and you may wish to consider on just tuning the $32 "as is".

I did a $32 - $6E conversion a number of years ago (prior to more info on the $32). As I recall, the only real thing we had to do when we converted from $32 to $6E was disabling the Cold Start Injector. We were able to reuse the $32 memcal with simple reprogramming. But without the CSI for "limp mode", you may have a problem if you NEED the limp mode and don't have a $6E memcal.

But excluding the possible 'limp mode' problem, the $6E can be reprogrammed onto the $32 memcal and will work. (Just disable the CSI).

 

I believe you can run an external knock module with the 165 but don't hold me too that. I rarely get a chance to look at the pinouts of various ecms so I might be wrong, I'm sure somebody will post what is on the 165 memcal but I don't think they ever had the knock module on it.

 

Chris doesn't like the CSI. He's had issues with it before and is again and wants it gone.....so $6E is logical.

If it were my car, we'd be putting $5D or $12 code in it and converting to MAP, or maybe even doing a '7730 swap. I just don't like MAF sensors....I replace way too many of them at work.

I don't think the potential limp-home problem will bother him. If he wants, he can find a $6E memcal and I'll chop that one up too.

Thanks guys.

 

Just reprogram the memcal with $6E and disable the CSI then.

I hear you on the "dying MAF" sensors.

 

How's that again? The CSI is an independant, stand alone system, not tied to the ECM. It is run by the thermo time switch during cranking IF the coolant temp is below 95*F. The thermo time switch is open untill then.

 

With the $32 code, the CSI is used for enrichment on cold-starts. In the $6E code, startup enrichment is accomplished through the regular injectors. If you leave the CSI hooked up and go to $6E code, you'll be flooding the engine on cold starts.

 

I love it when people take things out of context.

As I stated, I didn't encounter ANY problems when I did this a number of years ago. I wasn't sure if there MIGHT be a possible CSI problem in limp mode as we never encountered/tested "limp mode" condition. (Something I never thought about at the time I did it). It wasn't my personal car, so I never got the opportunity to "test the snot out of it".

A simple "No worries with the CSI in limp mode" would have sufficed.

 

Yeah, both memcals will work for the165 ecm (f-body). FYI, I've been running without a maf sensor for over a year(with a 86 memcal). No limp home mode problems here. It seems that $6E works better w/o a maf. Kind of crazy, it still goes into closed loop......

 

Thanks Tim for your confirmation of the memcal.

Can you tell me more about running w/o a MAF on the $6E?

 

Enlighten me, how was that out of context?

 

I have also used an 89 memcal for 87 code. Worked fine. I think even the 87 vette memcal worked but it's been awhile since I used it....


https://www.thirdgen.org/techbb2/sho...s&pagenumber=1

https://www.thirdgen.org/techbb2/sho...hlight=mafless

That shoulf get you up to date. Feel free to ask direct questions

 

By e-mail?

 

It took me a minute to figure that out.........

 

That's okay. 99.999% of the other people are still going

 

So did you read the threads?

 

I am the guy the jason did the conversion for.We also changed to 24 LB injectors and jason also eliminated the EGR (since it was bad anyway) and of course the elimantion of the CSI.Words cannot express what a difference this has made.For the first time since owning the car it fires up right away and doesnt have the 5 second smoke like it used too.Also gas mileage is up to boot!Now i can park in front of the door to my job since i am no longer emberassed of the smoke.Thanks again jason.

 

Now you need prom burning equipment. I'm sure your friend will teach you how to make other changes to the chip. The more you play with the computer, the more performance you'll see. Track side tuning, etc. There is no limit once you have your own chip burner.

 

 

That white smoke at the start was bugging me, I was thinking it was an oil leak from somewhere, it is only at the start,
so that's due to the CSI?

 

No, that smoke is likely from worn/leaky valve stem oil seals (happens on all SBC's) not the CSI.