It's a real pain having to fill up every 250 miles. I don't like letting my gas get down too low. My F150 had an 18 and a 20 gallon tank, I could go over 500 miles without having to stop for gas. My Tundra gets better gas mileage, so a 38 gallon tank would be sweet.
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07 Tundra DCSB, 5.7, Blue Streak Metallic, 4X4, SR5, TRD, BU, CK, DZ, FE, HM, MG, OF, Brushed Stainless steps, sill protectors, USMC lighted hitch plug and assorted stickers and license plate brackets, rollup bed cover, Rhino Liner, Mesh Grill backing, Black Wheelskin steering wheel cover, Wade in channel vent visors, under rear seat storage, PRG mini spring pack, Proforce rear exit cat-back exhaust, aFe CAI, TRD rear sway bar, A.R.E. MX series Cap.
Further experimentation with 91 Octane: boosts mileage just about 12% when I'm not towing, (16 MPG with 87, 18 MPG with 91) about 20% when towing (8.2 to 10 MPG).
Cost here is about 10% more ($1.35 per liter vs $1.22) so it is worth it even if it's just longer between fill-ups.
Try it you'll like it! If you only get an extra 50 miles (430 instead of 380) it's almost as good as a 5 gallon bigger gas tank!
__________________ [Tundra Bay]
Proud Member CBTMA
Radiant Red 2007 Double Cab Limited w/Graphite Leather Interior
Factory Nav, Sonar, and 10 spkr 440W JBL stereo with Sirius (sweet) Cold Weather Pkg and Block Heater. Brushed SS Stepboards,
Tires: BFG All Terrain T/A KO LT265 65 R 18, Diamondback Tonneau Cover.
Curt Front Receiver, custom 8" extension, & Warn 8000lb winch back/front mountable,
Tekonsha Prodigy Brake Controller DSP 16,000 lb 5th wheel hitch Firestone Ride Rite 2445 Air Bags
sent an e-mail tonight. I hope this is not vaporware.
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08 SR5 DC Green W/tan TRD JBL 5.7
MODS done
Tows
Homelink
Westin Running Boards
Headrest dvd System
XM and GPS in overhead console
GBS installed and alarm activated
All Weather Mats
Undercover
44 hail dents
de-badged
color matched Door handles
Any thing at all in the news on these gas tanks. I think this is taking to long, may buy a 50 gal. in bed tank from Northern. Not gas certified but for my own use.
We just updated our 2008 Tundra today with our new and improved canister assembly. We now need to monitor the engine purging cycle and try and confirm the truck is purging more vapor out of the OEM canister. If this goes ok then we will decide if we will then haul the truck back down to the emissions lab for re-test. I will hold your emails and follow up with you as we get new updates.
Sorry this is moving slowly but the emissions system on this chassis is much different than the one on the GM or Ford chassis.
More to follow (hopfully sooner than later)
__________________ 07 Crew Max Limited 5.7 4x4 Radiant Red 18,500 miles May-29-09 . Debadged,Matching Tint,Chromed Out Grill,LINE X(Xtra),Custom Plates (IFORCEU),TRD Anti Sway Bar,JBA SS HEADERS,CORSA Sport dual sides ,Bilstein 5100's Shocks,Volant CIA,Weight Reduction,Gutted 2nd Cats,Color Matching door Handles.
You can count me in for a 48 gallon replacement for the under body OEM 20 gallon tank! That would be the bomb, this freakin fuel tank has annoyed me since day 1. I am not hip on the in bed mounted ones as they take up bed space.
I'm in too if someone make the tank to replace the OEM one.
Amazing! You think that you are the only one thinking this is a problem and there are already many out there questioning the same thing! I went to Toyota about a month ago with another problem in my 08 CM and mentioned that it only takes 19.2 gal when BELOW E. They diagnosed the problem as a short in the fuel sending unit, replaced it, then said that it should read correctly now. Yeah right, same thing. I can't wait for this tank to come out. It is definitely a bummer when you are out in the middle of nowhere and you have already used up all the fuel you brought. Another 15 gallons would be just about perfect! Put me on the list
I sent an email yesterday to transfer flow and have not heard back, as soon as I do I will post the status on the larger tank
Please keep us posted! I'm definitely in, too. I'm sending Transfer Flow an email NOW! My business requires frequent day trips exceeding 200 - 300 miles, and the 26 gal. tank just doesn't cut it, especially coming from an F250 with the 36 gal. tank. Considering all the room under my long bed, it's kind of foolish that Toyota didn't at least offer the large tank as an option.
There are a lot of considerations in making a spare, or even a larger tank for gasoline vehicles. I'm no expert, but first, there's the emissions system that may possibly require re-calibration of the ecm and/or other considerations of carrying a larger volume of fuel and air (when the fuel is used up). Next, is the safety consideration. Our trucks were certified by the government to be up to necessary safety standards with the stock tanks. Adding another tank could possibly be illegal and raise liability concerns in the case of an accident. Remember, this is a highly flammable liquid we're dealing with here. Since diesel isn't nearly as flammable, there are a lot more options available to diesel drivers. In an accident, a heavy piece of equipment crashing into a bed-mounted diesel tank causes a big mess.... a gasoline tank becomes a big bomb.
I watched the supercharger installation video on youtube last night and it looks to me like the fuel pump/sending unit could drop right into a larger fuel vessel, but again, there might be some re-calibration of the ecm or replacement of emissions components.
Rumsey I just gave the latest in the post #68, 2 posts above yours, I have been in touch with the sales manager and he has been keeping me informed. also he will give us a groop buy special as a promo. as soon as there is more news i will let everyone know.
__________________ 07 Crew Max Limited 5.7 4x4 Radiant Red 18,500 miles May-29-09 . Debadged,Matching Tint,Chromed Out Grill,LINE X(Xtra),Custom Plates (IFORCEU),TRD Anti Sway Bar,JBA SS HEADERS,CORSA Sport dual sides ,Bilstein 5100's Shocks,Volant CIA,Weight Reduction,Gutted 2nd Cats,Color Matching door Handles.
Re: Bigger gas tank.
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My business requires frequent day trips exceeding 200 - 300 miles, and the 26 gal. tank just doesn't cut it, especially coming from an F250 with the 36 gal. tank. Considering all the room under my long bed, it's kind of foolish that Toyota didn't at least offer the large tank as an option. 
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