TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods

Looks like a recipe for disaster. No install/mod ever goes as planned; and that’s starting with brand new stuff out of the box (and I don’t mean “plastic derp” mods). My time is more valuable to me than the costs savings of someone’s S/C on sale in a different state. As soon as you buy it, it’s off that other persons hands and you are on ur own. Every little detail they “forgot” to tell you is now solely your problem. I know it’s exciting and stuff and maybe you have literally nothing going on for a while, but this has bad idea written all over it to me. And just like now, you’re asking for parts list, est costs, etc (absolutely NOTHING wrong with that, it’s what TW is here for) but it tells me you don’t have a true understanding of what you are getting into and you are going to be relying on this forum to get you through each step; again relying on people you don’t know for the majority of a project. It’s those details that to me make this not worth the time. Not trying to be negative or beat ya down, but I’d hate to have my truck apart just to realize some small attachment bolt is missing and now you don’t have a vehicle. I’d buy new, do it right one time and enjoy the hell out of it. Good luck and the people of TW are always there to bounce more ideas off of (I know it helps me through some unplanned situations!

 

I'm sure people know that the two items that make up the supercharger kit are:

1. vehicle "Fit Kit"
2. vehicle "supercharger kit"

But, the supercharger kit/box isn't just a box that contains the Eaton M90 blower. It's the blower plus the vast assortment of other parts needed for the install.
And the vehicle "fit kit" is actually the box with less components/parts. It only contains the intercooler/radiator bracket and a few misc items like the install manual/paperwork, etc.

If the (OP) buys this used supercharger kit and it is missing parts.... it doesn't mean just buy the "fit kit" and you'll get all the necessary parts. The missing parts might be part of the supercharger box. And I wouldn't trust Toyota/TRD to be able to source and sell you individual parts from either kits.

If you get a chance, look at the install book that comes with the kit and the parts description. It will list what parts are in which bag. And which bag is part of which of the two kits.

Good luck.

 

You are able to obtain any small items and parts which may be missing from Magnuson directly if I recall.

While not the most ideal thing, it is helpful in just knowing that you can if and when you need to.

Being that it is missing some items you will have to do so.

@Skootter14 and @SUMOTNK are right on both counts.

 

k.





Maybe I left a few details out, Im not new to adding mods, at all.

Also if it is indeed missing parts when I show up (I will have parts list in hand and will go over 1 by 1) I will just lowball him and if he doesn't want to sell it no big deal.

I built up a 335i motor with ALL used parts, saved over 4k$ buying used (intake, meth injection, JB4 tuner, catless pipes, bigger IC etc...) and it was one of the strongest running motors I had ever worked with.

Can't really understand how you could say "No install/mod ever goes as planned" like its a fact. I fully appreciate that things can and do go wrong, but I just have to disagree with that statement.


Again I appreciate the input and I take what everyone says into consideration.

 

No worries man! It’s good that you have more experience with technical automotive stuff. I just know I’d want someone to give me the no shit answer and not help me waltz into a disaster. Let us know how it goes!

As for things not going right...I plan dang near every angle of a project on my truck and there just always seems to be that one nut or bolt that you can’t possibly know is going to get stuck (tis the nature when off-roading and getting gunked up) which magically extends the work like an hour haha. Maybe that’s just my luck though

 

Yeah I know how that goes, surprisingly the Taco has been a joy to work on, no brittle parts, no broken bolts and everything has pretty much gone as planned.

What problems did you run into installing the S/C? Might help save me some headaches.

 

Work keeps getting in the way. I’ve installed the new fuel pump and now I’m trying to knock out the exhaust cams, thermostat, injectors, and UCON from URD

 

I really like this one. [sorry for the thread clutter]

 

12TRDTacoma or anyone actually...

I'm not a racer (currently) but I do like the blower. I've had one for about 50-60k (5-6 years) on my taco and must admit, I enjoy the power and the cards in my spokes from the blower whine.* My interest is not to be the fastest kid on the block but to have a reliable setup to allow me to enjoy 10,000 AMSL wheeling and to get a bit more power when I need it.

Anyway, to try to be specific. I have had an occasional Mass Air Flow code(s) (P0101 and P0102) and more recently Lean Codes (P0171 and P0174).

Last week I thought I had pinpointed the issue - cracked cap to ~1/4" port on back of charge air cooler plenum (what many call the port for the mechanical vac gauge) and a cracked vac line from the fuel regulator to the air intake). Replaced the cap with a silicone one and the vac line with fuel line thinking they will both last longer.

Anyway, I do have a TRD CAI (the K&N one) on it right now. I also have a non-CARB AFE one. (Personally I struggle with the idea of an oiled filter on a MAF intake. For that reason, I clean my MAF more often than most).

Also, in trying to knock out a one of the more obvious potential culprits, I just replaced the MAF with a new Denso.

My connections at TRD and Magnason are strongly urging me to first test using a stock intake to see if I get rid of the intermittent code. Right now I am trying to locate one to borrow for a month or so.

I do have a NIB set of orange injectors (1290 725 25 23250-YWG01).

So with that long winded lead up, my thoughts are to try the OEM airbox.

If it throws it again, my thought is to remove the tank, maybe replace the pump, remove the blower, change the injectors and spark plugs, re-install the blower with new intake gasket and plenum o-ring.

I hope the airbox cures my ills but if it doesn't, what would you suggest as a troubleshooting path other than the remove and replace path I describe above.

Thanks in advance and thanks with sharing your knowledge.

PS I have a good friend who has already punched holes in his pistons and I don't want to join that club.

* reference to putting a baseball card in my spokes when I was younger. Spent a good bit of my life in the auto biz and found that much of what is perceived as HP gains through things like exhaust and intakes many times give a psychological boost in HP and sometimes are not realized in race wins. Even much more important in real racing since fatigue from noise is very real.

 

Well if you have plans on changing out the air cleaner back to stock do it. In order of easy to difficult or time comsuming, I would do the airbox first, injectors next, then the fuel pump. If you have all of these items it sounds like you have most of the items which normally cause lean conditions covered and ready to swap out.

Without being there to know fuel pressure or what fuel trims look like, I can't tell you which one is the culprit, but it being both banks I'm going to put my money on either the air cleaner, fuel pump, or the least suspect of all if them, the brand new MAF. I have gone through three of them already. Seems like the Denso MAF's don't work as well as the factory ones for some reason or something.

 

Thanks. BTW the OE MAF was a Denso. I wonder if that was just a Mexico build thing.

I will let you know how it works out.

Thanks again for your quick response and the effort you made in making and maintaining this thread.

 

I know the OE one is Denso but it seems as if the build quality from the OE vs. Direct from manufacturer brand seems to be of a build different quality. Sort of like there is a difference in thickness between OE serpentine belts and aftermarket serpentine belts. The OE stuff seems to get better quality put into it for some reason.

 

Understand.

 

Sounds like a vacuum leak between the maf and the head. Maybe throttle body gasket. Vacuum line. Top part of supercharger the unbolts. I always use brake clean. And with it running spray different areas that it could be and listen for the idle to change.

 

As with anything, it is always a good idea to do a smoke test on the supercharger, preferably right at the intake air cleaner to simulate the engine sucking in air at the very beginning. This will ensure you don't have any unmetered air being sucked in after the mass air flow meter. Any shop worth it's salt will have a smoke machine available and you may even be able to just request they do that for you so you can ensure vacuum leaks do not exist. @HBMurphy

 

For what its worth.

Back when I first installed my supercharger I had the stock air box. Everything was running good with no issues. The kit came with the K&N oiled drop-in filter but I didn't install it. After a week or so, I decided to install the K&N filter just for the heck of it.

Very. Next. Day.... P0101

Put the stock paper filter back in, cleaned the MAF. No P0101 returned.

Just my data point. No oiled filters for my 1GR. Your mileage may vary.

 

Interesting. It appears these MAF's are very sensitive to oiled filters.

I was never a fan of running oiled filters on MAF equipped vehicles anyways. This just further solidifies my thoughts on why.

 

Ive never liked the idea of an oiled filter for obvious reasons. The only reason I tried it was because it came with the charger. Why would Magnuson throw it in there, couldn’t hurt, right? I went against my better judgement and it proved my suspicions.

 

When I first got my 06 I put a k&n oiled in the stock air box with no issues for 200k, just lucky i guess, I put the s/c kit at that point & used the filter it came with for 15k or so with no issue as well. I upgraded to the AFE CAI dry cause of all the neg oiled posts, it was the same price so I just went with the dry. just my two cents.

 

Yeah I know right. Matter of fact, mine is still sitting in the garage, I'll probably never use it.

Was your truck brand new at the time?