100 Series performance upgrades available
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Omg!
Even a cat back sounds sick with the 4.7
I have a VVTI GX, not a 100, but it has DT long-tube headers, an aFe cold air intake, Dirty Deeds exhaust, and a YotaWerx tune (87 octane, Active Duty). The thing now has plenty of power while driving and significantly more so than stock. MPG is about the same. Midrange power is great. The headers woke it up the most, but there was also a significant gain from the exhaust (much more than I expected). The tune also helped wake it up even more and was really "icing on the cake". The GX is lighter and more aero than a 100, but with the mods I did do it it's legitimately fun to drive and sounds great. I also have a Nomad valve body in the transmission, which significantly firmed up the shifts and contributes to the feeling of quickness.
In contrast I drove my buddy's non-VVTI '02 Tundra and it was slooooow compared to my GX. I would have a pretty hard time driving anything with a stock 2UZ, much less a non-VVTI, 4-speed rig.
In contrast I drove my buddy's non-VVTI '02 Tundra and it was slooooow compared to my GX. I would have a pretty hard time driving anything with a stock 2UZ, much less a non-VVTI, 4-speed rig.
Ain't got none. But the difference is big - believe me. We tow a 4,000# camper with the rig and I can now comfortably tow in 5th gear. It's also completely logical that the gains are so big with how crazy-restrictive the OEM manifolds and exhaust system is on these rigs, and how conservative the OEM Toyota tune is. A stock 2UZ leaves a lot on the table.
A less restrictive exhaust does not add to engine stress and probably (if anything) reduces it. It's not easy to exhale through a straw; the engine has to use it's horsepower to push out the exhaust as opposed to sending it to the wheels.
My tune made a difference, but I think it was primarily due to already having a free-flowing exhaust.
No argument there.. Seems logical... But does the increase in power output affect the longevity of all the components? Internal engine and the rest of the driveline? For example.
All I’m saying is that maybe some of the beauty of the vehicle’s longevity comes from being underpowered, and you have now moved away from that.
My GX will rust out by the time the 2UZ dies. If it does die, a new 2UZ is easy to find from a unmodified, albeit rusty vehicle, and I can swap it myself. Even that seems unlikely as I'm diligent about using only good gas and staying on top of oil changes and other maintenance. I am personally OK with what could be a slight reduction in engine lifespan given my mechanical ability and ease of parts availability for this platform.
Regarding the driveline, I'm putting maybe ~300 crank horsepower through the transmission. The transmission itself has been upgraded with the Nomad valve body, which according to Wholesale Automatics, increases the amount of power the A750F can handle by something like a factor of 2. The weak point is definitely the 8" rear differential, which I plan to upgrade to an 8.2. I'm not sure about the transfer case, although there are very few (if any) reports of them failing, even when abused under conditions like big tires and heavy wheeling (which are probably harder on it than slightly more power).
The Nomad valve body is awesome. I also put one in my truck. It was an easy install and totally worth the money. If I had known how good it would make the truck drive it would have been my first mod.
I run on free flow headers from Australia No cats and a one box stainless exhaust, I must point out at this point I’m in the uk and reason I don’t have cats is my vehicle is dual fuel ie lpg. I noticed a massive difference and infact if i floor it from a standing start it Will torque steer spin wheels until the Atrac kicks in . Quite scary so I done do very often
It seems I would have to do some kind of air injection bypass on my 06 VVTI … then I’d have to Fab some kind of block off plate to block the holes where the air gets injected back where the headers connect. Has anyone tried this? If I wanted to upgrade my exhaust system on a VVTI? Seems like a little bit of a pain in the butt but I’m wondering if it’s worth it. I see lots of guys getting 800 hp out of their 2UZ FEs … they’re dropping em and the Toyota Supras even. There’s lots of aftermarket parts availability from forged connecting rods and pistons to camshafts sand custom valves etc. it’s crazy to see these motors hit 8000 RPM. I’m not really looking for anything like that even though Lexstream sells a lot if cool stuff. Eventually, I think I’ll go maybe with some connecting rods out of a 1UZ and 8 pounds on a blower with an exhaust system, and call it a day. These trucks lose almost 100 hp in the drivetrain when you run them on the Dyno. Most of the VVT I motors I see you put down about 190 hp to the wheels, I would be happy to get 300 to the wheels. Plenty for the dunes.
06/07 Air Induction Pump Failure & Bypass
I got my kit today: The installation instructions print out say to tap the wire on the “ST” or “STA” or a violet/purple relay, but I don’t see that on my relay box? 🤔 V3647H Kit, I have a 2006 LX
forum.ih8mud.com
Here is my build list for now until a carb legal turbo is found. I’ve been building carb legal cars on the road since because of cali stupid smogs. So I have to stay legal. Coming from the Honda world I was tired of paying extra for smog or always taking parts off to smog. Too much hassle. Here are the parts.
Magnaflow full cutback exhaust system, DT headers, k&n air filter, unichip, nitrous kit at 200 shot.
but my goal is to turbo. The transmission I’ve been looking around learning about performance transmission builds. Stay tune.
This transmission gives me faith boosting
Links to these parts?
Doug Thorley has VVTI 100-series headers that include the air injection rail:
Thorley Header, 05-07 Land Cruiser
This header is made from 304 grade stainless steel and fits the 2005-2007 Toyota Land Cruiser 100-Series. Made in the USA with limited lifetime warranty 14GA T304 stainless tubing and 3/8 inch thick flanges Ceramic coated inside and out Kit includes all required gaskets and/or installation hardware
urdusa.com
They are continuously backordered - you may have to wait 6+ months until they bother making them again. It looks like the 100-series doesn't have the same short tube/long tube options that the GX470/V8 4Runner have, since there is an extra flange in the 100's exhaust just past the headers. I have the long-tubes on my GX and they visually appear much more free-flowing than short tubes, although both appear much less restrictive than the OEM manifolds.
I've deleted the SAIS on my VVTI motor (slyfox75 kit - which was $50 on eBay but appears to be NLA) and installed a blockoff plate in the flange between the SAIS tubes (engine to headers) and the air injector rail on the headers. So the system is totally "dead" and the rail on the headers does nothing.
Are exhaust upgrades worth it - in my experience "yes", the difference was huge. This past weekend we pulled our ~3,600# loaded camper to a local campground. A guy next to us had a sweet '06 100 on 35s with bumpers etc. He asked me what kind of MPG I was getting....I told him 13....he was shocked and said his 100 got only 12 mpg unloaded on the highway! My GW was probably north of 9,000# total this weekend with the camper, bikes, and family of four in it. I was able to pull the camper up 15%+ grades on twisty two-lane backroads with plenty of power to spare (albeit in 2nd or 3rd gear - but still got the 13 mpg). More power also gives you getter MPG, at least in my case.
Yeah I need as much air flow as I’m running a nitrous meth for now until I find a carb legal turbo in the future. Sounds so sick thank youDoug Thorley has VVTI 100-series headers that include the air injection rail:
Thorley Header, 05-07 Land Cruiser
This header is made from 304 grade stainless steel and fits the 2005-2007 Toyota Land Cruiser 100-Series. Made in the USA with limited lifetime warranty 14GA T304 stainless tubing and 3/8 inch thick flanges Ceramic coated inside and out Kit includes all required gaskets and/or installation hardware
They are continuously backordered - you may have to wait 6+ months until they bother making them again. It looks like the 100-series doesn't have the same short tube/long tube options that the GX470/V8 4Runner have, since there is an extra flange in the 100's exhaust just past the headers. I have the long-tubes on my GX and they visually appear much more free-flowing than short tubes, although both appear much less restrictive than the OEM manifolds.
I've deleted the SAIS on my VVTI motor (slyfox75 kit - which was $50 on eBay but appears to be NLA) and installed a blockoff plate in the flange between the SAIS tubes (engine to headers) and the air injector rail on the headers. So the system is totally "dead" and the rail on the headers does nothing.
Are exhaust upgrades worth it - in my experience "yes", the difference was huge. This past weekend we pulled our ~3,600# loaded camper to a local campground. A guy next to us had a sweet '06 100 on 35s with bumpers etc. He asked me what kind of MPG I was getting....I told him 13....he was shocked and said his 100 got only 12 mpg unloaded on the highway! My GW was probably north of 9,000# total this weekend with the camper, bikes, and family of four in it. I was able to pull the camper up 15%+ grades on twisty two-lane backroads with plenty of power to spare (albeit in 2nd or 3rd gear - but still got the 13 mpg). More power also gives you getter MPG, at least in my case.
There’s $8000 in aftermarket parts available from custom forged pistons to springs and custom valves SuperTech VVTi UZ Valve Springs 1UZ 2UZ 3UZ Head Valve Spring and Retainer Kit - https://xatracing.com/supertech-UZ-VVTi-springs-retainers.html?category_id=6529
They can also port and polish heads and do custom valve trains for applications up to 8000 RPM. Crazy Stuff.
IPT builds a ray 750 F transmission that can handle up to 600 hp.
A750E / A750F Performance Transmission - https://www.importperformancetrans.com/index.php?l=product_detail&p=4343
