General Supercharger Thread.

If it was common, I would not have gotten the Harrop. in all my queries, i did not come across transmission issues.

shit happens.

I intend to drain & fill every 30k. for whatever reason.

 

Tuner said my maf is pulling 510 g/sec and is almost at its limit. I have no lights or codes. He said maf housing needs to be bigger to turn it up more.

 

this jives with Harrop.

quote>>
In regards to fuelling the 3UR-FE are MAF (Mass Air Flow) based, so boost pressure is not a factor for the ECU. The limiting factors are MAF flow and any ECU limits relating to flow. The stock mapping extends to load of 110%. Observed peak load supercharged is 140%, therefore it is important to know what is going to happen when you go “off the map”.

The additional airflow proved to be of no concern to the ECU, peak airflow of 450 g/s was measured with the supercharged unit.

Testing at higher boost did reveal limits, both an ECU 512 g/s calculation limit and the MAF voltage ceiling. In addition, at higher flow levels the standard injectors do not have sufficient flow.

So maximum airflow was set at 450 g/s by selecting the Ø85 Supercharger pulley. To provide a further factor of safety, the Harrop Supercharger kit includes a high-volume Fuel Pump and Fuel pressure Regulator modification. Highe

 

Ah, so you need a larger cross section where the MAF sits. You could potentially modify your intake yourself to achieve this too. Larger cross section = less velocity for same net flow rate, so the MAF will read lower down in it's range at the same airflow and give you more tuning ability at the higher airflow areas. If you can measure your intake ID at the MAF I'll measure my air raid and Magnusson and that'll give you multiple data points to know where you are.

 

Yeah he said I was at my limit with the 85mm. I will have to upgrade to a bigger maf housing for the 80mm that I wouldn’t get additional fueling. I installed the upgraded fuel pump and fuel regulator that came in the Harrop kit. Also changed fuel injectors to DW650s. I’m still learning about this tuning stuff, not a expert by any means! Lol! My Volant inside is 3.5”. I think stock is about the same size?

 

The air raid was 3.5" too, the Magnusson intake is 3.75" so 15% larger cross section. Whether you want to run the Magnusson or another intake is up to you, it was about $400 for their intake, but it would be a step in the right direction if you can't find another intake you want. As someone earlier said, there's the fancy ProSpeed intakes which I would guess match the Magnusson intake ID.

This could also explain some of your tuning issues. I had lean out issues running the air raid intake since my tune wasn't setup correctly. If your tune is based on the TRD tune parameters, then that is meant for the Magnusson intake diameter so can make things get weird if you have a different intake size and the tune assumed otherwise.

 

Prospeeds is 650. I will have to save for a little while to get it after all I’ve spent on my truck. Harrop, tuning software,DW650s, Bilstein 5100s front &rear, rear Trd sway bar, Fuel Vandals with Nitto Ridge Grapplers,navigation with back up camera,(still need all new speakers lol) I need the pulley also. Can you believe a pulley is 140 at Harrop? I’ve been busy on this truck. Not bragging by any means! Just upgraded a older truck. Wish I could afford a new truck but Covid-19 bs wasn’t good to me! The email he sent said it was at 510+g/sec and should be close to 600bhp. That’s where I got that information I put in that earlier post. I read somewhere that all I needed was the top part of the Magnuson cai that they use the stock cai bottom when installing at Toyota. If I’m not mistaken. To be honest it is running great. I would like to up my shift point rpms. First- second shifts at like 5200 rpms. To early in my book.Tuner said he doesn’t do that. Stock n Slow said the Tundras sweet spot is 6200-6300 rpms. Does anyone else’s shift early like that? I have never really paid attention to it until I started data logging.

 

Someone I think in here was asking about beating a TRX. I doubt it based on this video. Red one is a Harrop with Headers.

https://youtu.be/ChV3VgQf9Nk

 

In fairness the TRX was running in 4x4 vs a 2 wheel drive truck that had no traction on an unprepped surface. If the tundra was a 4x4, or even if it was a prepped drag strip I think that tundra would have had it.

 

@ViktorG was saying Doug’s tundra is pretty slow

 

Relatively slow. It runs high 12s on slicks at the track I believe.

 

6.2L's running 11psi vs. 5.7L's running 6-8psi.

is a TRX going for >$100k now?

damn!

I reckon I'm $65k deep into my truck...once the ECU opens, I figger another $5k gets me into the high 11's. or thereabouts.

 

base TRX can be had for 80k for you guys south of the border, I've been contemplating to make the switch to TRX but the price differences up in Canada is not worth it.

 

how far south? I'm in Houston & a "gently" used TRX is $91k.

and gooooood damn luck trying to find a base unit.

nice trucks. they are whipple, right?

 

South of Canada/USA border.


https://www.ram-trx.com/threads/new-member-wanting-to-order-a-2022-trx.5238/

https://www.ram-trx.com/threads/up-...ory-wholesale-pricing.4637/page-5#post-102516

I used to have a Rebel, was thinking of getting a TRX but the prices here is pretty high, it's about 140k OTD for us in Canada where my was about high 70s, so it's almost 2x

 

Guys, d3 performance just informed me they can tune 2020+ !!

 

Well, I Just got my truck back today with the stage 1. I have been trying not to be too hard on it, but I did a couple pulls and it runs very strong. It looks like my AFR hangs out in the 10s to high 11s with an occasional quick blip into the 12s at WOT. It’s super erratic so I’m not sure why that is, but it seems to be running mostly in the safe zone from what I can tell. I wish it was more steady so I could be more certain about it. Boost bounces from 6-7 lbs as expected.
Its amazing how quick it is even with my 295/70r17 mud tires, and full 38 gallon tank! It feels like driving any other tundra if you drive it normal and stay out of boost/ I found tow/haul mode to me much more entertaining, and makes the throttle much more sensitive and gets it into boost a lot easier. Overall I’m satisfied, but will likely get injectors and a tune later for the added safety and benefits, and maybe some better transmission tuning. I can’t wait to see how it pulls my camper this coming week, we have a trip planned so it will get put right to the test.

 

$#!+ just got real!

Heck ya! Thats awesome!

 

say what?

I'm a stone's throw from there.

this is fate, y'all.

I am making inquiries. Will report back directly.

Will make a recon run today.

 

I'll send you Dinesh email, please let us know on how it goes, I'll buy the tuner now and tune my truck as is.

 

So what does that mean for those of us with 2019’s? That is, if you know…thanks for the update!

 

Stoked to hear what you think of this tuner company. My shop works with HP primarily, and I've not heard of D3. If this company gets a go I'll have to go Stage 2 after the holidays.

 

2019s are on the supported list:
https://d3performance.net/index.php/product/tuning-software/

 

same here. HPTuners was/is the go to tuner. why no news from them?

I suspect D3 has limited access to tables as they have only done NA tundras.

we will soon find out.

 

I think you are 100% spot on.

My preference is to use HP Tuners (based on my shop's recommendations and what they are comfortable with) too.

I pop in to the HP tuner forum every once in a while to see if they reported any progress;last status was basically a "we are working on it". To date I don't think they've cracked the 2019s either so we may be waiting a bit longer.

 

update.

The owner of D3 is presently in talks with Harrop about my case...moving to stage 2.

seems legit so far. he is very responsive.

Stay tuned...(pardon the pun)

 

If in future conversation you’re able to slide in the question of whether they would ever offer remote tuning for supercharged trucks, let us know! I’m currently exploring tuning options. I just don’t trust the factory tune to protect me. I’m especially worried about what shifting under load without greatly increasing the line pressures/shifting speed could do to my transmission.

 

will do.
we have similar concerns/questions.

 

Fellas! What motor oil are you guys using? 0-20w or 5-20w Synthetic?

 

0-20. Kirkland. Every 5k