General Supercharger Thread

Matt is definitely very knowledgeable with these trucks, he’s also super helpful. He has installed easily 100+ superchargers on tundras including installs with Prospeed products. I know he worked at SDHQ a while. I’m not familiar with what he’s talking about, but he’s probably right! He will probably help you out further if you message him as well.

 

OK, vft ftw then? My transmission hunting leaves a lot to be desired and I end up in sequential mode and trying to not trigger downshift and other similar antics to keep my desired gear... I know the added power should help, but knowing the transmission tuning is accessible during the process is comforting.

 

There are caveats with both options...HPt is gaining more and more traction and is probably easiest to use. VFT is amazing and there are those who tune with it, albeit, you will need to learn how to be legendarilu patient as the main tuner, Orange Virus, is unbelievable in how long responses rake place...there are members here that should be able to help you with their software and tuning tho and folks are happy with their abilities. I have ine if the first VFT setups and it's incredible for towing...when in S(sequential) mode. It holds gears until I tell it to change (in T/H mode). That alone has aided me when towing anything. I also had it tuned to be more sensitive when engine braking/downshifting but that can be tailored thru HPt as well...my sell for me on VFT is the transmission extras like their direct shift option explained above...

 

The plot thickens. Not only does PS have garbage customer service but they also don't sell you the correct shit it sounds like.

 

To add to the above, outside of tuning the answer is no. When you are engine braking or in some coasting situations the injectors turn off, and the supercharger bypass valve will open, so physically the engine braking is no different since it's just the compression of the N/A engine essentially.

Now if the bypass valve were disabled so you were always in boost, I'm not sure. Regardless, that'd require modifications and in the majority of cases the bypass valve is a good thing.

 

You can also do transmission tuning with HPT, btw. IDK what the differences are between that and VFT, but it's available. I know @justdsm fixed the 4th to 5th gear shift flare in my tacoma through it.

 

Another reason why I wanted to stay away from ordering any parts from them. But as it turns out, their fuel line kit contains everything that the ViktorG cheap fuel lines mod list contains. Except you have to buy their fuel rail to get the line kit. But it does come out cheaper in the end -- would be more expensive for me after buying a separate fuel rail. Fingers crossed that kit come in quickly and correctly...

 

And to this point I've assume the bypass is actuated mechanically based on the lack of vacuum inside the SC housing, as opposed to electrically... So not a simple mod.

 

Direct shift imo is the only benefit of VFT. And after having had it, I'd rather any of the HPT tunes I've had. Direct shift makes up for a lack of good transmission tuning to begin with imo.

But maybe I'm a hater, been a long time since I was in the OV/VFT game.

 

HPT doesn't have access to the same number of maps that VFT does (at least currently). That's why HPT can't offer VFT features like their Direct Shift and Gear Lock. The TCU ID of your truck may also influence if DS and GL are configurable via VFT.

 

And even then i imagine it (bypassing bypass) would just add a bit more parasitic drag, as the throttle body is always closed in that scenario.

 

Going off what guys have posted in here, including yourself, I'll be fine with the non FFV basket with some modifications to allow more flow. Regarding the 15v vs 25v circuit.. that hasn't been brought up at all anywhere else besides Matt in my findings. That leads me to believe majority are running off a 15v circuit. PS advertises the pump I received as a direct drop in with no mention of a jet pump.

 

If you’re able to find a way to, I’d just skip the fuel rails and try and incorporate the aftermarket fuel lines and run them in parallel. I truly don’t think the rails themselves are necessary at stock engine power levels, but I guess that’s just my opinion which I do believe is shared by some other well respected tundra experts. I’ve seen Matt Smith put OEM FFV FPRs on each rail which are 60psi FPRs.

 

Yes and no. It's vacuum/pressure activated, but the actuator controls a mechanical butterfly valve which can be fixed to the closed (always boosting) position very easily. You just disconnect the actuator and there's a little shaft stub and can even zip tie it so it won't rotate. Though the engine will always be experiencing full boost then, so it'll be getting more stressed among other things. It's an uncommon modification, and usually only on racecars or specific cases like that where the bypass valve is kind of pointless.

 

I feel youd be blowing fuses if your circuit was insufficient.

 

Agreed...the best and only value in what I received from them...it was superior to my original TRD tune and I just haven't bothered in buying another tuning cable, credits, paitence-training to have another tune for me...however, there is a LOT more everything with HPt in terms of tuning...if anything, just the ease to do it...when pulley comes in and injectors are on order, I'll be updating my tune with a larger smile!

 

I agree that they aren't necessary. I'm just done ordering different parts to make the ViktorG mod work in my application when it seems some needed connections changed. Also I didn't realize the ps line kit is all pre-assembled and has the same components. Learning as I go still

 

+11% VE over TVS 2650. +30% Air flow.

Probably wont see it for another year.

 

I didn’t know Eaton owned magnuson

 

I don't think they do but I could be wrong. Eaton designs the rotors and they partner with Maggie, Harrop, etc.

 

Second paragraph in article

 

I see. Interesting. I wonder why they license and distribute through these other companies too:
https://www.eaton.com/ph/en-us/locate/tvs-distrubutors.html

 

I need that 3100 on my ‘34.

just got the a/c installed and the demon carb decided to gum up. Getting it rebuilt Tuesday

 

puzzling that harrop can have such a better design. I think even the 3100 is upside down and single intercooler brick

 

That and why the Maggies aren't that much cheaper, probably more profitable per unit since they are under the Eaton banner.

 

Powerrrrrr!
Interestingly when I read the article about it they mentioned it has same footprint, making me wonder about the screws fitting current cases... Also the x vs the r models intrigues me.
But in reality it isn't usually the airflow that seems deficient in our trucks but the fueling requires the work..

 

Just returned all my individual fuel line parts to Amazon drop off at Kohls. Total amount $584.19. Purchased fuel rail and line kit from PS for $1425 after shipping. Only place you can currently buy the fuel rails by themselves is at XAT, which is $890 after tax and shipping.

So in the end, I'm saving myself the headache of cutting lines and finding all the correct fittings, and if I choose to eventually buy a fuel rail down the line, another $50.

 

Nothing better than a 6" intake system for that king Kong booster! Ha!

 

Is the MAF 5v reading limited by the MAF sensor itself, or the ECU? In the Taco world some people that had issues swapped to a Subaru MAF, which was hit and miss on whether it solved their problems

 

From what I have read it is all with the MAF and somewhere someone stated that if you have no knock and all that it really doesn’t matter because you are not doing any damage to the motor. ( maxing out at 5.0 running it maxed out as long as the tune says everything else is fine) I have no real world knowledge but I have been reading a fair amount of info as soon my truck will be going thru this in the stage 2?? Hoping all of that is already anticipated and taken care of, or will not even be an object as they will be using the 4.5 pipe and the tuner seems to know what he is doing?? I am sure some wizards will have way more info!!

They have the Stage1 ready to go!!

This along with other pieces I have stumbled on has been great information!! Now I know enough to still let someone else do it!!!