Mefi tuners

[transam]

Originally Posted by Rybar

Paul there's a lot of Burger joints en route from here south to Cali.

I've made the trip many times, and probably more bathrooms in between

[camcojb]

Originally Posted by transam

I'm not sure if its a 2/3 bar, I'd assume it would have to be 2 bar for turn key to use it on a supercharged set up? And no I dont have the cable/dongle. Now you guys have me thinking,if they made a mistake and put a 1 bar map what would be a symptom ? It feels like its hitting a rev limiter when it gets Into load around 2000rpm

what does your map table go up to?

[transam]

I don't have the cable/software to be able to see what the tune is like

[camcojb]

Originally Posted by transam

I don't have the cable/software to be able to see what the tune is like

I would not be out loading a supercharged engine with a tune I can't see or know nothing about.

[Matt@BOS]

Would you also maybe describe the problem as a "stumble?" The was a similar problem on an El Camino at Best of Show with a supercharged 402 from Turnkey, but it has since been resolved after a trip to Westech. Actually, the last three or so cars to go through BOS, including my own, all had a similar issue where the car had low rpm tuning issues. If you can find someone to work with the system it is probably a simple fix.

You could also tear out the computer if there is no one near you that can tune it...

[supremeefi]

Originally Posted by parsonsj

I don't know about 2 or 3 bar MAPs, but the MEFI 4b and 5 are big advances over previous MEFI systems, and even those have more capability than aftermarket systems.

You keep saying that yet no one seems to know if it'll go past a 2 bar map even, it won't do sequential right? It doesn't have a lean alarm, does it have a scaleable map? I could go on and on.
If you would please enlighten us as to how it's better/more capable than the best aftermarket systems today.

I'm with Jody on this one. You have all this time and money in a boosted application. Use something that will protect your investment.

[transam]

Originally Posted by camcojb

I would not be out loading a supercharged engine with a tune I can't see or know nothing about.

I've done worse, but it won't even rev past 2000. You can't even give a 1/4 throttle on the car. I pulled the plugs to see that it wasn't too lean.

[transam]

Originally Posted by Matt.A

Would you also maybe describe the problem as a "stumble?" The was a similar problem on an El Camino at Best of Show with a supercharged 402 from Turnkey, but it has since been resolved after a trip to Westech. Actually, the last three or so cars to go through BOS, including my own, all had a similar issue where the car had low rpm tuning issues. If you can find someone to work with the system it is probably a simple fix.

You could also tear out the computer if there is no one near you that can tune it...

I would describe it as a rev limiter. I sent the ECM to turnkey. They claimed it had a permanent 2000 rpm limiter in it,apparently back then they didn't have a time lock break in,they expected you to bring the car back to them and they could look the engine over and then remove the lock. So I was told the lock was removed but the car does the exact same thing. So my suspicion is the lock was never removed. I'm debating if I should try sending it back to them. I will contact westech to see what is their take on it.

[transam]

So i sent the ecm back to turnkey and they confirmed the rpm lock was removed. So i bought a codemate and ran a scan, im getting a code 41 and a code 81. Is there anything obvious i should check for or start to look at? All cylinders do fire as each primary gets hot as soon as the cars started.

"The code, 81 I am suspecting a cam/crank sensor issue or possibly injector driver problem. The code 41 correlates to the cam/crank issue, which would indicate a bad coil or misfire. A little further investigation on exhaust temps. will tell us more. This is a very strange problem"

[GregWeld]

Do it right and toss that system and get someone to tune the FAST XFI or similar... You've heard from the best/brightest on here... and for the most part they've suggested you get a more tuner friendly system given that you don't have the USB dongle and cable etc... and you don't have the WB O2 sensors...

Or -- ship the car to Mike -- it's not that expensive compared to the cost of rebuilding your motor...

Just saying -- after reading the thread from the beginning -- you're not getting anywhere going about it the way you are. Summer is coming....