TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods

Hey @JustDSM speaking of power adders, when you installed your ported intake intake manifold plenum from @Roostfactor how much of an increase of airflow did you notice on your logs? There doesn't seem to be a lot of documented info on the matter and I'd like to explore that option at some point here in the near or sooner rather than later future.

 

Are you talking about the cast aluminum lower intake manifold?

 

Yes I am.

 

I did a little hand sanding/porting on my upper too. But I don't have any back-to-back data to quote/share as I installed the URD headers at the same time. What I can say is that after looking at logs from a whole slew of trucks with similar modifications is that mine seems to edge them out in airflow by about ~10g/sec. Now, please don't go quoting that the ported lower/upper give 10g/sec! It's just anecdotal observation from looking at logs and logs of logs.

 

When I did mine I felt an improvement.

 

Is that still a 2 piece on later models? It is on my 2007 and I didn’t see a way to get a TIG in there so I didn’t think porting it would yield much without weeding the gaps first

 

Yup. There's still a bunch of ridges and hangups that can be smoothed out. Not much wall thickness available to actually enlarge the bore size.

 

Especially on the shorter (outside) part of the runners.

 

Less ridges and junk to interrupt otherwise smooth airflow huh.

 

Not much extra material there.

There aren't any seams or gaps there anyway.

 

I’ll do it before I jump into the abyss. I’m in the middle of a bathroom remodel and im knee deep in drywall dust, paint, tile, etc....

 

About the most you can do with this. I've also been thinking about having my supercharger ported. Not sure when, prob when I buy another daily.

 

Will the Steeda tensioner suffice or is the Thump tensioner a must?

 

most have been getting that roush tensioner.

 

All depends on how much you wanna pay... any of those options will be better than the stock arm. That's what you're replacing. It's been known to crack and break. That Steeda is pretty sweet though.

 

Well, i was going to have some shorty headers installed. After taking them off I found that the cats are starting to come apart. Any recommendations for cats?

 

if your trying to stay CA legal you will need some OEM or similar. none of the high flow stuff is CA legal that I’m aware of.

 

Yeah.. OE. Lol. No other way around it.

You COULD always have your OE cats modified to contain a metal substrate within. That would probably cost more $$$ Than a stock unit would though.

You could always

 

Low mile OE replacements from car-part.com