Toyota Tundra Forums banner

1 - 12 of 12 Posts

·
Registered
Joined
·
933 Posts
Discussion Starter · #1 ·
Some of this talk about the 03' Tundras has me thinking.....

Before I bought my 2000 Tundra V8 4wd, I had test driven a 2003 Tundra V8 4wd. I remember commenting on how powerful it was. It was like a rocket and I just barely had to press down the accelerator to get it to move at a decent pace.

I really did not notice at first, but my 2000 Tundra V8 (also a 4wd acccess cab) does not seem nearly as powerful (at take off) as this 03' did. Also, I had tested an 01' Limited 2wd V8 and it was not as powerful either. I asked once if the 03' engine was higher HP than the 00-02's, but I was told no.

Now I am wondering why the 03' accelerated much more quickly under light acceleration than my 00' does. Perhaps he had a special air filter on there or something? It looked ALL stock. I am going to check my air filter tomorrow and see if it may be dirty.

I think the PO said it had a K & N filter and it was "washable"? Does anyone know if this is true? I am unsure, as I have never owned a K & N air filter.

My power is good on my truck, but would love that faster acceleration at low RPMs than I have now. I like to "baby" my truck and accelerate lightly (never over 3000 rpms), but when I do so, I do not like to get passed by Cavaliers, Escorts and Saturns from a stop (even though they are accelerating harder, with a much lighter car). :rolleyes:

Any advice on how to "cheaply" increase my take-off power greatly appreciated, or why this 03' was like a rocket when compared to mine.
 

·
Premium Member
Joined
·
882 Posts
engines should be the same. variables that might affect what you are noticing are: different gears in rear-end, different tire size, headers, chip, etc.

all would still look pretty stock to the casual viewer.

these are some of the same things you can do to your truck to improve take off power. a search of this forum will provide a lot of detailed info. i would stay away from intakes changes and too large of an exhaust system on this engine.
 

·
Premium Member
Joined
·
11,634 Posts
.
these are some of the same things you can do to your truck to improve take off power. a search of this forum will provide a lot of detailed info. i would stay away from intakes changes and too large of an exhaust system on this engine.
Shaffer, just to clarify, are you saying your present truck has a K&N or the 2003?
 

·
Registered
Joined
·
933 Posts
Discussion Starter · #5 ·
My truck I think has the K & N, so I was told by the PO.

To answer the other question - when I drove the other truck- the tires seemed to be the same size and the weathe was sunny and warm... altitude - around 1500 ft. Range here is 1200-1700 ft.

Thanks!
 

·
Premium Member
Joined
·
11,634 Posts
The air filter "could" be the reason for the difference in power, and I'm totally basing this on comments from other members, that a K&N filter can drop your torque a little.

I suppose the easy solution would be to check the filter, if its a K&N you could try a paper filter to see if there's a difference, that's a cheap test.

If it was sunny and warm in the 2003, I would have expected your truck to be a bit quicker when the air outside is a little cooler.

My snow tires are the same size as my all seasons, according to the numbers printed on the side of the tires, but my winter tires are actually taller and heavier. I do notice a difference.

It could be the tires on the 2003 were different.

Do you know if your truck was used for towing on a regular basis?
 

·
Registered
Joined
·
933 Posts
Discussion Starter · #7 ·
Thanks. I will pick up a cheap air filter tomorrow and see if there is a change.


As far as towing... I have no clue. It does have the towing package, but it looks to have never been used... if so, then it may have been very little.

Could the tranny have anything to do with it? It seems to shift into 2nd before 15-20 mph, but thats under light acceleration. It does not slip though. I had read where the tranny could be "programmed", to adjust to the drivers driving habits, but I never found out how to do this. I drive it very easily, so it may need to have that done.

I know that I have a "harsher/firmer" 2nd to 3rd shift, so I normally accelerate more lightly (let off) when I know it gets ready to change (which I let it do around 2500 rpms). I hope the problem is not stemming there. I know that the early models had some tranny issues. All shifts are smooth, save for the 2nd to 3rd will shift with a "kick", or under heavier acceleration, it will "flare" abit before it shifts into 3rd, which I do not like at all. Makes me think something is wrong. I am also soon planning on a tranny flush and refill with Amsoil. I was thinking of the "auto-rx" treatment (which I have a bottle of), but it has not helped the engine noise on my Mercedes, so I am hesitant now about using it in the Tundra tranny. I have read where others had this issue and auto-rx cleared it up. Hopefully its something simple and this is not the issue anyway.

Thanks!


Do you know if your truck was used for towing on a regular basis?
 

·
Registered
Joined
·
568 Posts
My roomate has a 2003 AC TRD 4x4 and i have the 00 Sr5 4x4.
HE has the LSD i do not. We have the same tires, but he has 100k miles less. When we lived at sea level and were both stock, it was dead even every race we held on our residential streets.
I put K&n on that summer, and he would grab 2-3 car lengths right from the launch, and i would end up 4 car lengths ahead before Speed limiters caught up and he caught up at 105.
I would say that they should be about the same. I have found that there is a TPS sensor right under the TB cover on the 03's and the 00's do not.
Personally i feel my truck is quicker and gets better milege towing
 

·
Registered
Joined
·
933 Posts
Discussion Starter · #9 ·
Well, well, well. I bought a new filter today, got home and removed the old one. Sure enough, it is a K & N filter and it was FILTHY! Parts of it were black with caked up dirt. I think I recall the PO telling me that it needed "cleaned". I think he said they could be cleaned, but I have no idea.

I shelled out the $19.00 for a new Purolator paper filter and stuck it in there. I did not get to drive it after, because I started waxing it and then I was so tired, I came in an took a nap after I ate dinner. :) I will know on Tuesday when I drive it again. I am hoping I have MUCH more power and will get MUCH better MPG. Probably not though... wishful thinking. I am getting 16 mpg now, which seems normal for a 4wd V8 Tundra?

I will report back the results Tuesday evening.

The air filter "could" be the reason for the difference in power, and I'm totally basing this on comments from other members, that a K&N filter can drop your torque a little.

I suppose the easy solution would be to check the filter, if its a K&N you could try a paper filter to see if there's a difference, that's a cheap test.
 

·
Registered
Joined
·
1,348 Posts
Some of this talk about the 03' Tundras has me thinking.....

Before I bought my 2000 Tundra V8 4wd, I had test driven a 2003 Tundra V8 4wd. I remember commenting on how powerful it was. It was like a rocket and I just barely had to press down the accelerator to get it to move at a decent pace.

I really did not notice at first, but my 2000 Tundra V8 (also a 4wd acccess cab) does not seem nearly as powerful (at take off) as this 03' did. Also, I had tested an 01' Limited 2wd V8 and it was not as powerful either. I asked once if the 03' engine was higher HP than the 00-02's, but I was told no.

Now I am wondering why the 03' accelerated much more quickly under light acceleration than my 00' does. Perhaps he had a special air filter on there or something? It looked ALL stock. I am going to check my air filter tomorrow and see if it may be dirty.

I think the PO said it had a K & N filter and it was "washable"? Does anyone know if this is true? I am unsure, as I have never owned a K & N air filter.

My power is good on my truck, but would love that faster acceleration at low RPMs than I have now. I like to "baby" my truck and accelerate lightly (never over 3000 rpms), but when I do so, I do not like to get passed by Cavaliers, Escorts and Saturns from a stop (even though they are accelerating harder, with a much lighter car). :rolleyes:

Any advice on how to "cheaply" increase my take-off power greatly appreciated, or why this 03' was like a rocket when compared to mine.
Electronic throttle control....I think the difference in speed is all in the head.
 

·
Premium Member
Joined
·
2,395 Posts
Electronic throttle control....I think the difference in speed is all in the head.
ALL 4.7 tundras have drive by wire throttle. The older ones have the TPS on the throttlebody while the new ones have it at the accelerator pedal. I know this because I cleaned out the throttle body on a friend's 2000 tundra. If you manually push on the throttle plate of the older tundra you'll feel a gear driven servo motor and it doesn't move the throttle cable when you do so.
 

·
Registered
Joined
·
933 Posts
Discussion Starter · #12 ·
No surprise.... I do not have that much more power with the new paper filter. If so, its very little. I am beginning to think that Tundra was "souped" up or something. Thanks for the replies.
 
1 - 12 of 12 Posts
Top