TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods

@12TRDTacoma or anyone who may know...I decided to go ahead and install ruthenium plugs for my brand new S/C. Are they to be gapped the same as what's mentioned for the iridium plugs in the TRD install instructions? Thanks!

 

I did not gap my ruthenium plugs before installing. I haven’t had any issues.
Should you ? Maybe…

 

Thanks for the feedback. I'll measure and see where they're at and compare.

 

125mm

 

Thank you. I thought they looked shorter… sure enough.

 

I could design a 3d printed spacer to make up that difference pretty easily.

 

That would require some fancy material. Regular PLA, ASA, even ABS I wouldnt trust in there..

 

I only fuck with abs-cf, nylon, etc. Stuff more than capable of handling the temps.

 

The abs-carbon would probably be ok.. Still.. not ideal for the application imo. Between engine temps and the ambient temps here in Az.. idk if I would want that potential in there.

 

It's a non-issue friend. I can make them out of ultem if I want to.

 

lol. You do you Boo.

 

For folks with their sensors going out in the Y pipe, if my AFR never drops below 14/15, is it time for a new one? The truck seems to run fine, but I noticed that it will no longer go below 14. I did put in a new fuel pump and noticed it after, but as of now, I do not think it's related but rather a coincidence.

 

My Bosch lasted about a month. Would read stoich and then fall lean, never went below 14.6.

 

ok yah i recall that convo which is why I thought I am running into the same scenario. Will get a new one ordered.

 

Posted up on the thread @12TRDTacoma started but what have people replaced the sensors for the Speedhut? Assuming they are similar to AEM guagues from what I recall.

https://www.tacomaworld.com/threads/bosch-lsu-4-9-pn-cross-reference-and-compatibility.501754/

 

The OE gap is what I run mine at. I don't recommend gapping them.

 

You may want to consider a new one if you are only seeing 14-15 AFR because staying at that all the time is definitely not realistic as far as PCM fueling strategy is concerned.

 

100% I figured its on its way out. Reading the rest it seems like mine lasted longer than expected.

 

More wfo rips.

 

Thanks for adding me to the forum . I really need some help. First let me list my mods .

2008 FJ
TRD Supercharger (fully rebuilt by SCOL recently)
TRD ECU
TRD Injectors
Doug Thorley headers
URD 02 eliminators
URD 2.7 pulley
AFE intake
CBS Radiator
Walbro 255 pump

I did the headgaskets in November and added the headers, 02 simulators , and 2.7 pulley.

I have two issues I’m constantly fighting. I am having to replace denso upstream 02s on the drivers bank every 1000 miles or so. They keep getting stuck in the lean range. I Always use the denso ones .

The second issue is when I floor it or go past 40% throttle the ecu looks to be dumping fuel. If anything I should be running leaner . Progressively got worse where anytime I give it anything it defaults to 10:1

I’m at a loss with this stuff . I’ve been troubleshooting it for 6 months replacing MAF sensors , 02 sensors, cleaning throttle bodies etc . Facebook groups are useless so I came in here