TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods

Bigger tables or maybe MAF voltage scaling?

 

Initially, at least, it seems the MAF is limited in power capacity and then finding a newer or more capable MAF to replace stock in order to gain more fuel. The FPR seems to bypass this digital limitation through analog means of forcing the fuel wether the ECU thinks the engine needs it or not. The MAP tuning is probably more accurate, although time consuming. And by time consuming, I mean more expensive. Hence, the UCON systems that overwrites via piggyback to the engine sub components the demand signal required. I wonder if any of the Tundra V8 MAFs would work? Surely a N/A V8 flows more air than the older v6 4.0s. I am not sure of their specs, but the video makes it seem that if the MAF can exceed the 322 flow rate then the ECU should follow suit with fuel. However, this may require different tuning since the ECU probably doesn’t recognize the larger injectors or colder plugs.

 

Ive been checking out semi-local tuners in my area and found one that has some history with toyotas. They have their own dyno and have developed their own software and want to get into the Tacoma platform. Took my truck in this week to have them read the ecu to see if they can work with it. Waiting to hear back. It's called Monkey Wrench Racing

The tuner seemed pretty confident that the MAF limitation could be overcome by scaling the voltage with a multiplier and not require any other mods.

https://www.monkeywrenchracing.com

Not sure what will come of it but worth a shot.

 

map >>>>> maf anyday

 

The FPR doesnt bypass anything. What happens is the ecu is calibrated for 43.5psi fuel pressure. When in boost with the FPR mod fuel pressure rises commensurate with boost so fuel flow is increased WITHOUT the ecu knowing about it.
So at 10 psi boost you have 53.5 psi fuel pressure which injects more fuel for a given injector pulse width thereby richening the mixture in open loop beyond what the TRD tune tables call for. Since the ecu doesnt know what to do past the table it seems it just keeps on the same fueling path beyond the table and since the FPR mod is ultimately providing more fuel, afr's stay safe.

 

^what he said...

I should have said it achieves a somewhat safe correlation utilizing the fuel through an analog means, overcoming (not bypassing) the ECUs inability to provide more fuel since it cannot read the additional air input.

 

Yessir!

 

I believe tuning with the MAP is what would be labeled as a "Speed Density" tune... which is why I love GM's HPTuner's platform so much. There is literally so much flexibility within the PCM tuning and you can change anything your heartstrings desire. This is also why I have been so disappointed with Toyota's lackluster tuning capabilities from the getgo.

There were no cons with tuning via speed density but it made the MAF in essence a decorative engine item at that point. Since it was no longer being used it was just a dummy.

I would personally not use a Tundra MAF, as those are the same style MAF used amongst many manufacturers which have shown an evident shortcoming in long term reliability.

This is a prominent discovery! I am looking forward to seeing what comes of him if he is capable of cracking the tuning code properly.

 

@australian hilux this is the place for you to learn about supercharger mods. Read at least the first post, the OP here does update it.

 

Anyone got a stock supercharger coolant pump they wanna get rid of?

 

Not sure if ur in a hurry, or anything but if u need a new one

Bosch 0392022002 Electric Water Pump

$127 BOSCH 0392022002 Electric Auxiliary Engine Water Pump - Compatible with Select Chevrolet Silverado 1500; Ford F-150, Mustang; GMC Sierra 1500; Land Rover Range Rover, Range Rover Sport

https://www.amazon.com/dp/B00BHKX9PA/ref=cm_sw_r_other_apa_i_SEeHCbP4CJ8NY

 

There are higher output options as well that @12TRDTacoma had found and posted on post 1, unless you are looking to do a dual pump setup?

 

The Mercedes Benz version of the Bosch pump outputs roughly at least 1.10 GPH more than the stock pump. The only fallacy is that you have to change out the plug for it, but it's an easy 2 wire switchover. It worked out for my retrofit as well as my stock pump was weeping out from the two outputs for some reason despite correct hose clamp placement.

 

Yeah just looking for a second pump for duals

 

Still gotta get this ice box figured out and how I wanna run the lines. I dunno i should just plum in the the lines from the ice box so it goes right from the ice box to the super charger then through the intercooler and all the way back to
The ice box. Thinking that’s the way I’m gonna go. Or figure out a way to run just ice box through the intercooler when drag racing with shut offs on the regular system.

 

I'd get the coldest liquid possible to the place its needed most first.

 

I would also mount that box in the bed where there is zero engine bay heat to melt it because if you put it in the engine bay that ice will be water within a matter of 2 minutes. 3 minutes tops.

 

Also sucks I live where it’s cold so
I’ll have to run coolant through everything before winter.

 

Figured I’d check here first.

Anyone interested in the following?

-URD 7th Inj Kit
-URD UCON Expansion Harness
-URD 70MM Throttle Body Adapter Plate
-70MM Throttle Body

$575 shipped

I’ll also include the bolts needed to use the 7th inj plate and the 70mm TB Plate together. Gadget does not supply these. I had to find them.

Also, gasket material if you want to make a new gasket for the throttle body to adapter plate. There is no provision for an O-ring here. You must make a gasket for it.

Finally, I will send a couple of spare O-rings for the fuel rail tap. They can be a pain.

So, that’s everything you need to add a 7th injector and 70 MM TB to your UCON tuned Supercharger.

It all came off my truck this morning because I put the factory air box back on.




If you’re curious, I put the factory air box back on because I’m tubbing for 37s. I lost some of the mounting points for the AFE, and had to cut into where the snorkel went.

I never liked the snorkel anyway, so I ordered new fenders and sold it.

 

Ya it’s going in the bed for sure. Getting a 4 gallon tank. It has 3/4” inlet and outlet. Same as what we have now. Ice Box Tank Reservoir SuperCharger Air To Water Intercooler https://www.amazon.com/dp/B00EPYM3CK/ref=cm_sw_r_cp_api_i_m5wHCbZMG07VH