The Helmholtz effect has been known since the middle 1800's. All car makers have made some version of a ram intake over the years. Many cars today use "multi ram" intakes.
You're talking...
Type: Posts; User: 1project2many
The Helmholtz effect has been known since the middle 1800's. All car makers have made some version of a ram intake over the years. Many cars today use "multi ram" intakes.
You're talking...
Hello!
That's a blast from the past. The 1992 Geo Storm was one of the first gm products using an EEPROM. This ecm could be reprogrammed through the ALDL connector. 1993 Cavalier VL 4 cylinder...
Great work! Thank you!!
There may be a definition file floating around for the 6299. There used to be one on Moates site.
Hex editor is just a tool to display the values at each location in the .bin file. Changing it...
The chips used with the 7747 are especially susceptible to static shock. You should use a ground strap when swapping chips.
You know, I sent bags of that stuff to Doc and the little guys at CSH HQ. Not sure if it helped them get their 747 off the ground but I'm sure they had fun trying.
Well, you've just arrived at the heart of the issue. The 165 was "good enough" even though vehicles with a more recent design were getting a better ecm. OEM choices are based on economy and profit....
steveo, I agree with your insights.
While I was attending college I made money charging for tuning. I worked on some interesting projects and met some great people. But I also learned it's...
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Condor78, is it possible you weren't logged in? If you don't check "keep me logged in" the site software will automatically log you out.
Basic information to help with diagnosis:
The ignition module will fire the coil without a working ECM. Checking for spark while cranking only tells you the coil and pickup coil is working and...
$12P is good code.
Biggest issue is if the hardware is in different locations. '165 code sends a message to injector driver to fire injectors but 730 board says "Nobody at that address."
I have a Willem GQ-4X that seems to work well.
Eprom erase frequency is 253.7nm. You'll want a light that produces UV-C for best results.
Welcome to the forum! It sounds like you've got a fun project.
You've got some good considerations ahead of you. 4L80E is a strong and capable transmission and it would be a good choice to use...
Lots of maybes but it's likely something simple.
What head bolt torque value did you use?
Can you see any leakage from under the valve covers?
Hello Phil,
Welcome to the forum. I think you have a good plan. Changing from BUA to ARAP may require some changes to ARAP and to the vehicle. I haven't done this in many years but I believe...
Before Megasquirt existed, I met Bruce Bowling at a get together in Ohio. Bruce is a really sharp guy. We were talking about using tuning software. I told Bruce that the biggest hurdle for folks...
So this is a part of tuning. Three factors affect idle speed. Spark advance, fueling, and air intake. For older ECM's the timing affected idle fastest, fuel next, and IAC last. Many of the OE...
Definitely hose everything off before making any decisions.
Do you know what was installed for a head gasket? Steel shim type or composition?
Some of the cam advice may be left over from the old days. Slower processors and early code didn't play as well with a big cam. Rapid intake pressure spikes would trigger acceleration enrichment...
Not normal at all. Are those leaks from the LH head gasket area? What year is block? You might need to tighten a pipe plug in the LH side of blockbehind the cylinder heafd.
89 G20 will have slow updates. What is an example of the corruption you're seeing?
Hi Dave,
I've found other posts mentioning that Replicated TOS is # of reluctor teeth * rear differential ratio. I am also reading that the 6L80 VSS has 36 teeth. I hope to have time later today...
So this is a tough situation to help with. It's tough b/c as an experienced mechanic I've gotten used to seeing and thinking of problems in ways that help diagnose the what's wrong. Your...
Welcome to the site. Lots of folks here are willing to help if you have specific questions.