TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods

Send Nhxrunner a message on xru. He has 2.825 with 2 wide bands. He will answer any of ur questions. Tell him to take a video of his gauges for you. Matt is a good guy.

 

I used to have the TRD tune with the 2.85 URD pulley and my AFR's were stupid rich. Like super stupid and I have never had an AFR really be "steady" but they are more "steady" now with the Ucon than before the Ucon. And as for performance, our build is quite similar. I have video on my YouTube channel of my AFR's if you want to watch them. Some dry and some towing. I will see if I can get a moment and link them.

 

The AFR numbers for WOT, idle, or cruise should have relatively steady numbers. The TRD reflash does an excellent job of that consistency whether it’s rich or lean.

Do you not have 455s in your truck now? If so swap the ucon out already and you’ll know immediately. One thing that the ucon hates more than anything are exhaust and/or intake air leaks.

 

It’s steady

 

Quick question if anyone knows or can check, the smooth pulley that comes on the stock dynamic tensioner is that 76mm or almost 3 inches wide. I just got a replacement from magnuson and he said that's the correct size. Problem is I cant get it to clear the crankshaft pulley. I thought if I was reading correctly that the pulley should be close to 50 mm.

 

54mm is what it should be, or 2.1".

A 50mm or 2.0 pulley will work as well.

 

https://youtu.be/eRRcoJxW9Wk

https://youtu.be/IbdO9C_o_Es

 

ok thanks, they sent me the wrong part.

 

Gotcha thank you sir, i dont expect it to be 100% solid, i figured it would move a little, i am just trying to figure out if its going to move around a substantial amount because i want to be able to get out of it quick in case it starts to lean out on the passenger bank like it normally does..

Definitely will do this, appreciate the heads up!

Please do! Trying to get as much info as i can. The more the better!

That is what i am hoping for, my AFRs are all over the place with my UCON.. I do have the 455cc's in right now. @o0opackersfano0o is going to reflash my stock ECU for me, so im waiting on that at the moment. I am going to swap it out as soon as i get it back from him.
I dont think i have any intake or exhaust leaks, everything seems good, but there could be a minor one somewhere that i dont know about i suppose..

 

perfect, many thanks Juan!

 

Wow that is rich, the first video especially. Thanks for posting those. That whine sounds goood! Miss that noise lol

 

Now a question for all of you. I just replaced my Bank 1 and 2 Sensor 2's. The oxygen sensors per a reccomendation from Scott before I datalog. Do you all disconnect the battery after pretty much all sensor or electrical changes? And it said to remove the battery terminals to reset the Ucon before I run the datalogs. Can I just pull the EFI fuse that removes the power to the ECU to do the same thing. My battery terminals are a PITA!

 

Yes always disconnect battery for more than 3 minutes to let UCON relearn everything.

 

Oh my gosh that is pig rich! We gotta lean you out. Like a lot!

 

@12TRDTacoma is correct, it's a 54mm (~2.15in) pulley for our stock tensioner.
Here's the replacement Magnuson sent me. They simply replace the original 3 inch pulley on the Gates 38274 with the 54 mm. It's not the first time they've sent replacements with the wrong pulley.

 

Can I get away with just the power to the ECU and Ucon? With the fuse or do it right and pull the terminal? Lol

 

I always just pull the negative terminal and set a timer on my phone to make sure i get the full 3 minutes. Would probably be quicker to do it that way vs pulling a fuse

 

Ucon did great for that. Lol. Just a little extra tweaking.

 

Ok, talked me into it. Stupid fancy stereo terminals!

 

I've always had rich #s. It was steady with stock exhaust. Once I put a free flowing exhaust with a 2.7 it was really erratic. Now with a 2.5 it's quite stable. Fpr mod keeps it steady til' the meth is spraying. Then I can hit 8's if I want. This is with ovtune. If I dont get an update established by years end I'll pull it and go back to trd flash.