Truck Feels Slow Compare To Others

[Waterline]

I have had 4 4x4 Tundras. The two that felt the fastest were both the 2000s. The 2005 four door was a dog. I replaced it with a used 2003 Limited AC. It has a glass shell, but so did the others. I'm running 285x75-16 BFG MTs. It came with a Volant cold air intake and cat back Borla stainless dual exhaust. I just hammered it on the on ramp of the freeway (regular gas) and it sure doesn't seem as peppy as the 2000s. It doesn't seem to have the low end punch. It pulled 2nd gear to almost 5K RPM but it seemed like it took awhile to get there from what I can remember. Is it the intake, exhaust or both? Should I get rid of one or the other? I tow a 21' Boston Whaler that weighs in at 6K + with fuel and gear. Low end is very important.

Thanks for any and all suggestions.

[geojim]

Did any of your others have modified exhaust and or intakes? From what I have read repeatedly on this forum, is that duals will kill your low end. The factory single exhaust w/ a good aftermarket muffler like a magnaflow or spintech is ideal.

And those 'cold air' intakes don't seem to help much, and again, reduce low end performance. Not sure why exactly, but it has been tested over and over by Tundra owners on this forum. Most end up putting factory intake and air cleaner back on.

[ic3nin39]

I can tell you this...I have an 06 DC 4X4. I had the dealer throw in the dual exhaust. It took a week before they put it on. I thought the truck was slow to start with...after the dual...even slower....I don't know how to pick it up unless I put on a supercharger...i don't know....I'll throw in some TRD or K&N air filters only...and lets see what happens....i'm not a big fan of cold-air intakes (although i like the AEM on the eclipses) but the factory one is enough..maybe changing the air filter might help...dunno. I'll spend a $20 bucks on them...give it a shot.

[elrcastor]

I've noticed the same thing with my totally stock '06 access cab. I find that driveing with overdrive off helps.

[Duke107]

I thought I was reading the Tundras are quicker than the ford and the gm etc?

[MOREPOWER]

Lets face it, the tundra 4.7 is underpowered since 02. they made changes almost every year and added more weight with the double cabs. it downshifts more now and it's slow. dcabs need the new 5.7.

[4.7 vvt-i]

I don't understand how a some 05 and 06 owners say their Tundras are slow. I bought my 05 AC 2wd new and it felt very quick and powerful right away, especially in 1st and 2nd gear. Last fall I took it to the drag strip and ran 14.9@ 92mph with no mods. I realize the DC 4x4 are about 500lbs heavier and that will make a difference.

[skinny22]

The '05 and up models should be the strongest. They boosted HP by 40+ for 2005 (assuming the old 4.7L was rated in the same manner).

Mine feels quite strong, no complaints at all. I'd say the truck is quicker than the Chevy 5.3L, and certainly quicker than the Ford 5.4L. Maybe not as much grunt if you're towing above 5,000# say, but it drives great for how a typical 1/2 ton is used. The 3.92 gears help, most of the competition is 3.73 or higher unless ordered with a 4.10.

The only truck I've driven that honestly feels substantially quicker than my Tundra is an AWD Hemi. That would peg you back in your seat nicely, but the Tundra has nice power. Those of you with fresh motors might need a little break-in time.

[NiveK]

if you look at the times they posted in the major auto magazines the 05-06 tundra is quicker than every single truck except the Titan where it is .1 slower in the 1/4

[Ando140]

I'm happy with my '02 4x4 ac tundra, it seems to have real good power & acceleration. If I remember correctly, the newer 4.7 has more hp, but a little less torque than the earlier ones.... maybe that's it?

[bigboycs2001]

I believe that the results of the MODS to unleash some of the "hidden Horses" in the 4.7, and you can look at several DYNO results like those posted on the K&N and JBA websites, are typically seen above 3000 RPM. Not really the average RPM one would use for towing or typical daily driving.
-If you want to pull stumps, get a diesel!- Hmmm, that would make for an interesting new release from Toyota.

[rcjunkie]

I remember reading somewhere that the dual exhaust will kill your low end torque. Adding a set of some TRD or JBA header will give back some torque and some added HP. Also, the stock airbox setup is recommended. I have the TRD air filter in mine with the TRD duals, headers, and LSD. LSD seems to makes a difference off the line.

[KenRice]

I have had 4 4x4 Tundras. The two that felt the fastest were both the 2000s. The 2005 four door was a dog. I replaced it with a used 2003 Limited AC. It has a glass shell, but so did the others. I'm running 285x75-16 BFG MTs. It came with a Volant cold air intake and cat back Borla stainless dual exhaust. I just hammered it on the on ramp of the freeway (regular gas) and it sure doesn't seem as peppy as the 2000s. It doesn't seem to have the low end punch. It pulled 2nd gear to almost 5K RPM but it seemed like it took awhile to get there from what I can remember. Is it the intake, exhaust or both? Should I get rid of one or the other? I tow a 21' Boston Whaler that weighs in at 6K + with fuel and gear. Low end is very important.

Thanks for any and all suggestions.

1. As already mentioned the dual exhaust will hurt your low end.
2. The 285s will also hurt your low end unless you regear.

[skinny22]

I'm happy with my '02 4x4 ac tundra, it seems to have real good power & acceleration. If I remember correctly, the newer 4.7 has more hp, but a little less torque than the earlier ones.... maybe that's it?

The newer trucks have more horsepower and torque. To compare, you need to look at the '05 engine specs:

2005 HP= 282 @ 5400 Torque= 325 @ 3400

2004 HP= 240 @ 4800 Torque= 315 @ 3400

The 2006 engines were rated by the new SAE standards which basically killed all of Honda and Toyotas numbers. The '06 numbers should be more consistent when comparing other brands though.

[snoczp]

For towing 6K+ you definitely want the overdrive off. I can't speak to the exhaust issue, but everything I have read on this board says it does kill the low end. The larger tires will also make your speedo not only read incorrectly, but make the truck slower at low end unless you regear as has been suggested.
My '06 4x4 DC is sweet and I couldn't be happier with the low end and get up and go. We'll see how it goes towing the boat next weekend, but I'm towing way less than you are.

CAP