hyperion

iTrader: (1)

Are there any? Could you take a GTO PCM and hook it up to a Z06 harness and use it (with the appropriate tuning)?

If there are differences, is there any advantage to using the LS7 PCM over the LS2? More features, better performance, etc.?

Thanks,

-ch

Speartech

iTrader: (14)

They're completely different and not interchangeable. The GTO ECM (E40) is for a 24X reluctor engine while the LS7 is a 58X reluctor engine and uses an E38 ECM.

ringram

Later corvettes use the E38 too, though dont they? Kind of gets confusing as I understand early C6 had the E40 as well..

foff667

iTrader: (2)

05-06 GTO's use the E40

05 Vettes use the E40

06+Vettes use the E38

05-06 TBSS's use the E40 i believe

07+TBSS's use the E67 i believe

way to go GM, confuse us all.

Speartech

iTrader: (14)

All 06 and newer Vettes use the E38 whether it's an LS2 or LS7.

05 LS2 Vette used the E40, but there is no Z06 or LS7 in 05.

hyperion

iTrader: (1)

Wow, that's a more complex answer than I was expecting. Thanks for the detailed responses.

In terms of performance or capabilities, are there any advantages to one particular PCM?

-ch

foff667

iTrader: (2)

I personally think the tables in the E40 are simpler to understand for most.

Speartech

iTrader: (14)

True, but I think you'll see it go down as the "bastard" ECM of the new generation controllers due to its extremely limited use. Kinda like the 97-98 LS1 PCM.

slow

iTrader: (7)

Exactly, this is why I haven't purchased a 05 C6.

Ryan

hyperion

iTrader: (1)

Could someone compare the 99-02 F-Body PCM to the E38 in terms of capabilities? I guess what I'm asking is: is there a compelling reason (performance, features, etc.) why I would want to 'upgrade' from the '01 PCM I have today to the newer E38? (This would be in conjunction with a new motor build, so I'd have the option to run whatever reluctor I need...)

Thanks again,

-ch

Alvin

iTrader: (2)

For the time being the 99-02 has more going for it in simplcity. It can also independantly control a automatic transmission. The 99-02 can be used with really trick OS's like Efilives Os5. I'm sure it won't be too long before the can computers catch up.

foff667

iTrader: (2)

Also there are no Real Time Tuning solutions for either the E38/E40/E67 pcm's currently whereas the LS1's have an abundance of choices from our "trick" RTT custom operating systems to the moates setup.

hyperion

iTrader: (1)

Okay, thanks alot guys. This clears it up for me: stick with the 99-02 PCM, no real advantages (and some temporary disadvantages) to going with the newer E38 PCM.

-ch

Troux

iTrader: (4)

So how hard is it to run the LS7 on an LS2 ECU? I've heard of it being done before, just want to know what's involved, besides changing the reluctor wheel. Also, is there any reason they changed the reluctor wheel? Is it going to set the LS7 off-balance to use the LS2 one? I know it's been done before, but I'm ****, and I'd just like to know why they changed it between the 2 Corvettes if they were going to use the same ECU.

ringram

I think it has something to do with the divisors of 4 6 and 8 which means that the reluctor is more flexible and accurate for use with mulitple engine configurations.
Where 4 6 and 8 are the number of cylinders. Especially with newer stuff like VVT and DOD etc.
At least thats my recollection..
Plus with the new ve calculations boost is automatically handled and the ecm is faster so can do it on the fly without needing static ve tables etc and is more able to deal with the above stuff mentioned, perhaps even with direct injection like the solstice and the E67 ecm in it.

slow

iTrader: (7)

well, I guess I did buy a E40 anyways

Ryan

2002_Z28_Six_Speed

iTrader: (19)

Basically the main advantage of the newer PCMs is support for other applications running on the car. More crappy subsystems which you don't need unless you are retrofitting alot of stuff onto your project car! They don't really do a better job of running the engine.

Maybe you might want it because I mean seriously GM worked on our stuff 10 years ago. It is ancient. No one at GM even knows what the 2002 Camaro OS is.

The only performance advantage of the newer operating systems is floating point calculations: No 512.x grams/second limit on the MAF. That could be done on our older PCMs if someone had the time and knowledge of the hardware.