I'm answering to rather old topic, but I just recently bought me a 1995 Roadmaster, and I'm interested in the tuning options. So, could I just download a Corvette bin-file here, program it to car and enjoy newly found power? I've already read the original bin from the car, and I tried to compare the Corvette bin (found here) to the original bin with TunerPro, but couldn't find any major differences on the parameters. Or I just didn't look at right settings..
all the stuff you need to tune that car is either on fbodytech.com (disclaimer: my site), in posts on this forum, or maybe on tunercat.com depending on whos software you use to tune.Originally Posted by GunslingerFIN
you are way off track thinking loading a corvette bin will help you.
the reason the vette engine is rated at a higher horsepower has very little to do with the tune. a 'vette is an aluminum headed engine, yours is iron headed. if you load that timing table it'll knock heavily and reduce power (probably blow up in the long term)
not only that but the way the vette ecm works with the other modules in the car is quite different, so loading that bin right up is a bad idea.
if yours is a stock car, only small changes will be benificial. if you aren't hauling heavy loads, maybe a bit more timing advance in some areas, maybe a bit leaner fueling at power enrichment. transmission tuning is also critical and probably where you'll get the best seat-of-the-pants difference (and again, quite different than a vette as well, since the vette is so light and has totally different gearing)
here's a good thread to start reading too, it's not for a b-body like yours but same stuff applies
http://www.gearhead-efi.com/Fuel-Inj...-lt1-M6-tuning
Wow, thanks for the quick reply. Car is pretty much stock. Free-flowing dual exhaust after cats, CAI with usual mods, that's pretty much it. Air pump is removed, and since car has towing package I think it came with mechanical fan, but that has been removed and there's dual electrical fans now.
I'll look into that thread and see what I can pick up from there. Despite asking about the Corvette program, I'm actually not looking for more power. With the towing package gearing the car accelerates really nice for the size. I'm more interested in finding out if I can improve mileage and stuff like that.
EDIT: I forgot to mention yesterday, that the reason I started to look into all this is that the car seems to run cold. Temp gauge never goes past 1/4 of the scale. I noticed, that secondary fan seems to run pretty constantly. Previous owner, who did the replacement, told me he also lowered the temps where fans kick in, so I started to look into those. He had set 90*C for fan1 and 95*C for fan2. I tried to reset them to original temps, but that didn't change the reading on gauge. I also checked the wiring, and it looks like it's ok. Secondary fan has own fuses and relay, and ground for relay comes from PCM. So, it seems that PCM is running the second fan for some reason.
Last edited by GunslingerFIN; 09-29-2019 at 01:54 PM.
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