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Mike Kojima posted on September 25, 2011 22:00 

Project Toyota Tundra, Installing and Testing the TRD Supercharger
By Mike Kojima
We have been building our Project Tundra into the ultimate towing machine over the past year with the help of Toyota and TRD. Toyota and TRD’s accessories are great in the fact that they do not affect your warranty and can even be financed at the dealer at the time you purchase your car if you are so inclined. You can check out our look at the supercharger kit contents here.
If you are curious here is TRD's warranty policy:
Warranty
Toyota/Scion Warranty - Length of Coverage
Accessories installed at the time of the new vehicle purchase are covered for 36 months/36,000 miles, from the vehicle's in-service date, whichever occurs first, under the New Vehicle Limited Warranty.
Accessories installed by the dealer after the new vehicle purchase are covered for 12 months, regardless of mileage, from the accessory installation date, or the remainder of the New Vehicle Limited Warranty, whichever provides greater coverage
Accessories purchased over-the-counter are covered for 12 months from the date of purchase.
Car covers are warranted for 12 months from the purchase date and are not covered by the New Vehicle Limited Warranty
This is a killer warranty considering that some of these parts are hard-core performance bits.
It’s not like our Tundra was hurting for power and we had already installed a TRD exhaust system and cold air intake in previous installments of our project for a nice gain, but when towing it is never possible to have too much power!
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| Howard Watanabe of Technosquare starts out by removing the skid plate under the truck. |
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| Next he removes the bolts holding the bumper fascia in place. |
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| Some tape on the fenders prevents us from scratching the paint. |
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| The bumper is removed so we can install the intercooler and water pump. |
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| The bumper is off. |
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| The horns and hood latch stay are removed. |
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| The coolant is drained, the hoses are removed and the intake manifold is also removed. |
Still we were really cautious about our project and wanted to thoroughly test the supercharged Tundra before reporting our results. Towing is actually pretty brutal on trucks; it can be even harder on a powertrain than racing. Things like towing a heavy load over the Grapevine or the Baker grade in the middle of summer can mean minutes at wide-open throttle in 100 plus degree heat. Well, not in the Tundra, it has enough power not to strain like that, but regardless, towing can be incredibly hard on a vehicle.
Sunday, September 25, 2011 10:31 PM
EVO owners, pffff. The "huge fast house" comment was priceless. How does project Tundra like the new project trailer?
Sunday, September 25, 2011 11:09 PM
The trailer is still being built.
Monday, September 26, 2011 5:51 AM
Now I want a supercharged house, too.
Monday, September 26, 2011 8:15 AM
Watching that video I think your truck might benefit from from track bars in the rear.
Monday, September 26, 2011 8:42 AM
Nothing beats the whine of a supercharger :D
Monday, September 26, 2011 9:52 AM
@Adrian How about the whistle of a turbo? Much nicer sound in my opinion. Mike, you say it feels faster than the claimed 500hp? That's saying a lot in a truck that weighs that much!
Monday, September 26, 2011 11:01 AM
Badass. Any word of this motor ending up in Dai's car next year? Sounds like the perfect drifting recipe haha.
Monday, September 26, 2011 1:09 PM
Sounds awesome! I'm really enjoying the image in my head of you laughing hysterically.
Monday, September 26, 2011 1:24 PM
Man this makes me happy I ditched my Titan. That truck was so inferior to the Tundra it's ridiculous. I look forward to seeing the trailer finished and mounted to this beast!
Monday, September 26, 2011 2:43 PM
Excellent detail and insight! I can't get over how big those heads are. Anybody who knows tow rigs knows there's a reason these Tundras have such a good rep. Mike, Daewoo might be on to something. I kept trying to think about your dyno problem description along with the clip and then Axle Wrap slapped me upside the head. I've seen it a bunch, and when you go to diesel like torque numbers, those springs like to start flexing.
Monday, September 26, 2011 3:15 PM
you guys should take it to the dragstrip to see what it runs...
Monday, September 26, 2011 4:24 PM
That's awesome ! Mike your Tundra is an Extend Cab right? Now imagine how scary-fast would a Reg. Cab be with the same exact power package :) I bet you the Reg. Cab is at least 500lbs. lighter than yours. Talk about power to weight ratio ! Have you thought about dynoing your Tundra on a Dyna Pack? No worries about wheel spin :)
Monday, September 26, 2011 4:47 PM
I bet you guys are losing a lot of power on the dyno due to spring twist and the tire flex. That is ungodly power! One of my favorite projects, simply because it's something I can easily relate to. Taking care of and upgrading a new car is much more feasible for most than, say, making our own Miatabusa. What kind of Evo owner runs around trying to trounce Toyota Tundras? I don't doubt you beat him, but it's certainly odd he would challenge a truck.
Monday, September 26, 2011 5:04 PM
The Toyota Engineers told me a regular cab 2wd can run high 12's low 13's with good traction and this truck should be able to run high 13's low 14's. It feels faster than that but it's hard to get it to hook up. It needs some sort of anti spring wrap up device for sure, it can get mad wheelhop. This truck feels like a ballistic barn, it's stupid fast!
Monday, September 26, 2011 6:30 PM
"Ballistic barn"! LMAO!
Monday, September 26, 2011 6:53 PM
so no plans to visit the dragstrip?
Monday, September 26, 2011 7:04 PM
Maybe if we figure out an acceptable solution for the spring wrap and wheel hop. I don't want to do slapper type traction bars and I want to be careful that anything we do doesn't cause bind and mess up the handling. This would mean something like a center of the axle housing ladder bar or something like that. Or perhaps a true LSD and different shocks. The E-LSD makes the power switch from side to side and sort of makes the hop worse. Drag racing a huge 4x4 would be funny.
Monday, September 26, 2011 7:38 PM
Mike - The two types of ways, typically, to deal with Axle Wrap are with ladder bars or your leaf spring pack in the rear. Not a lot of companies make ladder bars for your Tundra (at least from a quick search) but Pro Comp is one that does and I've used for suspension components, tires, etc. You can buy aftermarket leaf packs but I'd talk to a custom spring builder. They tend to be just as much or less than aftermarket guys but can offer more flexibility in the way they build a pack :)
Monday, September 26, 2011 7:55 PM
The idea is to do it in a way that does not affect ride or handling balance and neither of those meet that criteria.
Monday, September 26, 2011 8:30 PM
I'm not a suspension/chassis expert like someone I know :) But I was under the impression that ladder bars (not old school ones) were nice because you can still maintain a stock leaf pack for a comfotable ride while preventing the axle wrap?
Monday, September 26, 2011 8:33 PM
The bad thing is that they bind under roll and act like a super big rear sway bar unless you use housing floaters which takes out about half the bind, still not good for anything but straight line.
Monday, September 26, 2011 11:33 PM
Are you sure about that? I've got a lot of friends who are into off roading and they articulate a LOT with trackbars and leaf springs.
Monday, September 26, 2011 11:39 PM
When you explain that 3rd dimensional aspect, it now makes even more sense why you are a sensei while I still remain a gakusei :) I still don't know if a custom leaf pack would cause a harsher ride.
Tuesday, September 27, 2011 12:01 AM
Daewoo, unless they have a design type I haven't seen I am very sure. Do you have pics? Do they have housing floaters and perhaps a front pivot? A custom leaf pack would have a very much harsher ride.
Tuesday, September 27, 2011 1:11 AM
Mike - You see, I'm used to running around in diesels that have more torque with heavier duty springs to counteract the torque (only ladder bars seem to help in the sand though) Comparatively speaking your Tundra probably feels car-like soft to me. I also not so secretely would love to see the Tundra 4" taller sporting 35s. But I'm old-school and prefer 16" wheels that show off more sidewall than the 20-22s guys are running nowadays :) Keep me updated on the center-axle ladder bar idea!
Tuesday, September 27, 2011 1:32 AM
This is exactly the setup my friend's Dodge is running. http://farm3.static.flickr.com/2756/4495232589_0777588552.jpg We've articulated it before and after and didn't find any difference. The handling is so crappy I don't know if I'd notice a difference anyway though!
Tuesday, September 27, 2011 1:48 AM
Mike, I am not sure if you guys had the chance to take it to the track yet, but we got together and had a group meet. A 2 wheel drive with the TRD package (430 gears) withe the super charger netted me a best time of the night of 13.31. That was running 275/65/18 goodyear silent armor a/t tires. Just had to be careful on the launch. We did have a couple of guys that were running drag radials that pulled down in the upper 12's with a double cab. The Toyota extended warranty also covers the super charger. It's a win/win situation with it being a Toyota built supercharger and covered under your factory and extended warranty. November 19 will be our next meet and hope to see some lower times with the Firestone destination s/t tires. Good write up. Looking for more updates from you on this project.
Tuesday, September 27, 2011 1:51 AM
Mike, that last post was running a double cab just like the truck you have been working on. It had the TRD package, but it did not have the Rock warrior package.
Tuesday, September 27, 2011 10:02 AM
Steve, do you know what the MPH was and the 60 fot time?
Tuesday, September 27, 2011 11:08 AM
Daewoo, those track bars are super long so that is probably how they get away from a lot of the effects of bind when articulating off road, but they still bind to some degree, probably enough to affect understeer/oversteer balance. The main fault is I think they are ugly and I don't want something like that hanging under my truck! Yeah I know thats lame... I was thinking that a single long track rod from the differential housing to the crossmember with bearings on the forward mount would not affect roll stiffness or articulation and have minimal bind in bump and be hidden.
Tuesday, September 27, 2011 11:55 AM
I've seen a couple different styles Mike but with your style I like the thought of a bushing on one end and heim joint on the other. Theoretically it should allow for rotation side to side with minimal to no bind (thanks to the heim joint) and then prevent the axle from a front to rear shift, thus eliminating the axle wrap.
Tuesday, September 27, 2011 12:44 PM
That's so cute it's like a JDM lightning... http://www.youtube.com/watch?v=kv7YbD48UG8 you mean like this....Im the guy in Blue BTW...cleaned my drawers real good
Tuesday, September 27, 2011 5:55 PM
That almost happened, Jeff was yelling stop and no one heard him for a few seconds. It could have been much worse.
Tuesday, September 27, 2011 11:20 PM
60' time was 2.075 1/8 mile speed was 83.98 1/8 mile time was 8.587 1/4 mile speed was 103.28 This was my first trip to the track and it was right at 60 degrees.
Tuesday, September 27, 2011 11:23 PM
Mike, have you guys added the TRD rear sway bar? Everybody that has done it really recommends it. I could tell a difference and do regret it at all.
Wednesday, September 28, 2011 1:59 AM
Yes I think we did it in our first installment of our project.
Sunday, October 02, 2011 12:58 AM
For the axle hop, maybe look at the axle damper on the Ram SRT-10?
 
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