UCON Flex Advanced Engine Management System

You got a real battleship there!

 

I have always thought my truck has been lacking in the power and speed department. Especially for the mpg I get. Wondering if I should mess with it and see if maybe I am in valet mode? LOL Anyone know how the valet mode works on this setup. Does it cut power or limit rpm or what? And I am pretty sure if I hit launch mode I would loose another rear end.

 

Valet mode limits to 1900rpm so you would really notice if that was the case. Launch mode limits to 3000rpm. I haven't tried launch mode yet either mostly out of fear of damaging something.

 

I'm under the impression that it limits the rpms to 2,000

 

Thanks guys, well it is definitely not in valet mode then.

 

I may have been a little pessimistic on the numbers. I need to run some more logs and really wring it out to see what numbers I peak at. I was a little cautious on the last run and did not bring to redline. I wanted to get a general capture before I tore it all apart for a compression check. Compression check was good, ~181psi all cylinders on a warm, not hot motor. Believe factory spec is 189psi all within 14 psi and minimum of 140psi. So if I could have measured sooner I would likely have gotten a bit more pressure.
For the money invested, it would be nice to have 350hp at the wheel.

 

Why not just twin turbos with the engine management cheaper and more HP

 

Hello,

Been running a Ucon Flex EMS with my TRD SC, flashed for a few years now. I did Spec-U headers, 7th injector, upgraded fuel pump and of course it has the included 170 degree thermostat, cam gears. When it runs, it runs like a champ and I usually keep at under 4,000 rpms. But here is the thing that makes me think I have had a bunk Ucon all along. When doing a quick, under load rev from say 2,000 to 4,500 rpms, it effing fries the coil on my #6 cylinder, rain or shine, hot or cold weather. I get a P0356 code and I can either cool it off for a bit then take it easy home or it just totally fries the coil.

This is the only coil it does it with, no other coil, ever. I have had this happen at least a 1/2 dozen times. So last week after BC skiing at 12,000 feet, I took it nice and easy home. About 10 minutes from home while doing like 40mph on a rural road in 78 degree weather, I get the dreaded misfire and code, like out of the blue. So I get it to a safe place to park, wait an hour and it drives home fine. But like usual, I do not trust the coil so I have my tech replace it and all the plugs which were getting a bit worn, would do it my self but that cylinder is a PITA with the SC above. It drives fine afterward, so today I get stuck behind an old truck doing 20MPH in a 30 zone and get stuck in 2nd gear. I go to pass, hit the higher revs and poof, the damn coil goes AGAIN! Same code, bad misfire, I wait an hour and this time it only improves a little bit, still rough, still throwing the P0356 code.

At the moment, it is parked on a steep incline a mile from my damn house. I will be back by it in a couple hours and I hope I can limp home. I use my truck for work, it has a 1,000lb pop up camper on it, I need it to be reliable but with this seemingly POS piggyback, something is frying that coil and I have no idea what.

Anyone else have coils get fried using the Ucon?

 

Post up in here...

https://www.tacomaworld.com/threads/trd-magnuson-4-0-supercharger-tips-tricks-and-mods.518932/

Also, HP tuners is now available, so you can ditch the Ucon.

 

Could someone help me out which cables those are? Mine didn’t come with it.

 

I have to leave the truck ignition to on for about 30mins before starting the truck up once the UCON is plugged in?