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Re: Random DTC41 Tip

Subject: Re: Random DTC41 Tip
by bogus on 2020/7/4 16:16:07

I am an IT guy... I don't mind computers in cars, I just hate computers in cars where they are nothing but maintenance fails...

Engine controllers, IMHO, are the best thing since sliced bread... thanks to the tech (which came to the street from F1 racing), has given us 700hp V8s that can get 20 mpg on the highway... The 400hp LS2 in my '06 Coupe gets nearly 30 on the open highway!!! The LT1 in the C7, when mated to a 7spd manual, set in eco-mode, will hit nearly 40 MPG on the highway. That's insane. And if it helps us sustain our passions, I am all for it.

Where computers become a pain in the ass is when the OEM stops supporting them. I spoke to Harlan Charles about this a few years back, asking if GM was considering supporting older Corvettes with hard to get parts and he indicated it was on the radar, but I suspect the C8 kinda slowed that plan.

We in Corvette land are not the only ones with this problem... The Ferrari 348, 1990-1994 or so... it has a computer module that manages the climate controls. This component was made for Ferrari, using Ferrari specs, by an outside vendor. The downside? This module fails and you are stuck with an expensive car with no heat or AC! Ferrari doesn't make the part (well, they may now), and won't let the vendor make it, either... As I understand it, there is a dude in San Diego that fixes them... however, my point is that we are not alone.

In general, the computers in a C4 are pretty good. The CCM and EBCM are noted to last forever, and the ECM is good to 150k miles or more... Even tho it is made to deal with engine heat, I don't think it lives as long as it would if it was in a cooler area. Why not put it in the back storage bin? As an aside, if you need an ECM, the 1992 and 1993 Corvette ECM is shared with the 1993 Camaro/Firebird LT1 ECM. There are 120k of them out there... just swap the chips.

Do NOT trust the rebuilders... they don't know what they are doing...
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