Looking for someone to look at datamaster file & give advice

[johnny_b]

I have a 1995 Corvette LT1 383 with LongTubes and LT4 hotcam. I have all software and hardware required to tune and have began doing so. So far i have switched to speed density to begin tuning the ve tables. At first it ran really rich 108 blm LTFT after lower the ve tables i have got it to come up to 115 but after running for awhile it went back to 108. Looking for some advice?

[steveo]

i can probably help you if you show me your bin

also you should just rough out your VE and then throw a maf back on there..

[steveo]

i just viewed your log. your coolant temp sensor in the waterpump is **screwed** (or the wiring)

that needs to be resolved before anything will line up in your tune

it keeps jumping from closed loop to open loop, then it throws a code and defaults to -40c which certainly will screw your trims (and much more)

[johnny_b]

Yes I noticed those whacky coolant temp sensor readings and i wasnt sure if it was an indication of failure or if it was pertaining to forcing the car into speed density mode. I will inspect and try to resolve this.

Here is my .bin

P.s. THANKS for the quick reply steveo, I have closely studied your work involving the EE mask and tuning the LT1.

[steveo]

I will inspect and try to resolve this.

you'll need to pretty much go back to the start once you've fixed the sensor, but that's ok, since it doesn't seem you've tuned much yet.

[johnny_b]

Understood.

After I get back to square one I am unsure of what i should be changing first. Should it be closed TPS timing? The spark table in general? or Scaling the VE table?

[johnny_b]

I have resolved the coolant temp sensor issue. I flashed to a stock .bin and adjusted the cylinder volume. After switching to CL the BLM quickly headed to 108.



Here is the scan and the bin