TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods

I'm sure someone could build a custom one for you.

 

Very good point, didnt think of that

 

Hahaha.. I know.. I know. I wish.. but I just can't justify it.

Im just having a hard time finding a shop that will play ball. Since I wouldn't have any cats.. they won't do it.

 

I am not sure, I would buy the 7th but urd is the only one I know of that sells it and you have to have a ucon to use it. I would like to use one of the controllers that comes with a meth kit so it can be fine tuned/adjusted manually.

Excuse my ignorance but is gasoline really that much worse than meth/alcohol?

 

It's not a question of worse for the engine. The pump will be just fine at 50/50 meth and water. More than that fails pumps. And higher risk of fire. If you ran gas it could blow up, literally. I asked them the same question you did. They said why bother when superior octane and cooling is with methanol. I could run a 2 in pulley if I wanted and never go lean. Even without tuning.

 

I gotta ask the question:

Has there been any thought as to why the butterfly valve closes where it does, stock?

I remember a few months ago, the craze was removing the restrictor jet. Some people had no results (with this mod alone) and others had fluctuations in afr or something. Anywho, it caused most to reinstall said jet and leave well enough alone.

I’m all about improving a system and even I am looking to adjust this butterfly valve when I do plugs in like 20k more miles...BUT what could the possible ramifications be for adjusting this valve all the way shut? (Is it possible for too much pressure, restrictive air flow, etc???)

I would hate to see people having to reverse this and hope it doesn’t become the case. I just have to give a little benefit of doubt to the engineers that designed it that way.

Thoughts?

 

Always good to have a backup.

 

FYI - When the package arrives don't open the box in your house....the cheap chinese hoses that it comes with have a really strong odor

 

Don’t be a wet blanket now! We’re on a roll here. We’ll be keeping up with @Torspd in no time.

 

@Roostfactor @loginfailed

Tagging yall since you both are running the UCON and similar exhaust setup like me and have more knowledge of uTune/all the data within it.. With that being said, what are yalls injector duty cycles like at WOT with the 61lb injectors and the smaller pulleys? I think Roost is running a 2.5 and Login is running a 2.55, but please correct me if im wrong. Trying to figure out if I should go with 61lb or 80lb and call it a day since there is just a little price difference. Don't think Im planning on adding a 7th injector later on, instead probably going the meth route whenever I get everything with my truck sorted out.

edit: found a good deal on some deka 80lb injectors, and would rather go this route so I don't ever need to upgrade them down the road.. Does anyone know if there are any downfalls to running this large of an injector? @Speedwaytacotuesday mentioned that his idle is a little rough, but wondering if injectors this large could cause any other problems?

 

Haha I know man, but I feel like the question has to be asked for the betterment of the group

 

Good tip! Ill make sure I open it outside and throw those out before taking it in

 

I suspect it's done that way to prevent sticking and/or binding. The throttle has coolant going to it to prevent frost from causing it to stick, whereas the bypass does not. Just brainstorming on that one... the benefits according to what @12TRDTacoma saw in his AFR changes indicate that moving the valve from stock to fully closed meant about a 3% increase in overall airflow going into the combustion. That's not enough for one to notice, so it's really up to you if you want to make the adjustment with that in mind. I would say the engineers who designed the system simply had it adjusted that way because it offered some additional conservatism when it comes to engine safety.

 

Even if you all rig up a way to control a 7th injector outside of a UCON, you should still use URD's fuel tap for that injector. I think they sell that separately. You wouldn't have to worry about an additional pump and potentially unsafe fuel handling under the hood. Then you're only looking at the purchase and adaptation of an independent standard injector. Maybe drill and tap that into the elbow at the back of the supercharger, so it would be super stealth and good atomization. There has to be a source for a turn key solution out there. Its probably with the billet tensioner.

 

If you have not done the Y pipe yet and removed the restriction right at the joint area that will be a huge bottleneck in the system.

The snorkel may be causing a "restriction" despite the fresh air intake and you may never be able to overcome that despite the fact it looks like the boost is high, because my 11 psi vs. Your 11 psi may not two totally different crank horsepowers.

I agree.

If you have surging at wide open throttle I want to know more. Particularly how your air fuel looks while it does that. 11 psi while surging at WOT is a dangerous combination!

The Dayco Gold label belts are the equal to gates fleetrunner belts as they are utilized in diesel applications as well and are designed for longevity.

The green back that the gates belts have offer a better traction surface, and I'm not sure if Dayco Gold labels have that.

This is my thought process behind it. The engineers were VERY conservative when they designed this supercharger with its overall OE boost output, so it would make sense to be "safer" and allow some boost to bleed out. We are modding though, and in doing so we are correcting oversights and shortcomings in the OE design to allow for more power, and better overall performance.

 

I would think that the snorkel would have a big effect on running rich when in open loop on the TRD tune. I understood the snorkel to be a major flow restriction on air coming into the engine, thus more fuel than air expected. I remember reading that some folk's AFE CAI boxes were sucking in when ran with a snorkel and supercharger. Opening up the exhaust may not help a flow restriction on the intake. Have you always had the snorkel, or did you have the same rich condition without it?

 

wouldnt an intake restriction pre-supercharger just cause a loss of boost pressure instead of high psi?

high psi would be after the rotors aka manifold/engine/exhaust?

 

Sounds right, but I'm assuming the flow restriction is only evident at higher flow rates like WOT. Therefore the issue is only seen when you see higher levels of boost. So they naturally coincide. To your point the only other option would be clogged/ partially clogged CATS.

 

ah yeah. should have re-read it a little

 

Mine is around 60-65% duty cycle at WOT with 61lb injectors. 80lb would be overkill, unless we are talking a turbo setup. (6) 61lb injectors are good for close to 600hp at the crank.