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preformance parts for 2011 how to improve hp

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Old 01-07-2011, 09:38 PM   #1
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Question preformance parts for 2011 how to improve hp

looking for ways to increase horse power in 2011 tacoma? any ideas
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Old 01-07-2011, 09:59 PM   #3
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Super charger is probably the only thing that will give you more HP.
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Old 01-08-2011, 07:58 AM   #4
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Supercharger. Most bang for your buck.

Running 89+ octane gas in the 4.0 will get you about three horsepower and ten or fifteen pounds-feet of torque.


Anything else is probably a waste of money (who cares if you gain 0.5 horsepower).
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Old 01-08-2011, 06:09 PM   #5
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really gain 3 hp from 89 octane??
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Old 01-08-2011, 06:19 PM   #6
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Running higher octane doesn't do anything on vehicles tuned for 87 octane. On the earlier years of the 2nd gen the manual said 91 for increased performance and maybe then it did something but it was eliminated from the manual. No one has any proof that 91 does anything for our trucks of then people saying it feels faster.

OP: Supercharger alone or headers, intake, exhaust, maf calibrator all together will give you a nice jump.
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Old 01-08-2011, 08:03 PM   #7
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Quote:
Originally Posted by whippersnapper02 View Post
Running higher octane doesn't do anything on vehicles tuned for 87 octane. On the earlier years of the 2nd gen the manual said 91 for increased performance and maybe then it did something but it was eliminated from the manual. No one has any proof that 91 does anything for our trucks of then people saying it feels faster.
Are you saying Toyota eliminated the ability of the engine computer to adapt to lower octane gas? That seems very, very unlikely.
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Old 01-08-2011, 08:05 PM   #8
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Quote:
Originally Posted by JKD View Post
Are you saying Toyota eliminated the ability of the engine computer to adapt to lower octane gas? That seems very, very unlikely.
I'm saying maybe the extra tuning to get that 3 horsepower that you won't feel was replaced with some other programing. Maybe for the VSC system. Or maybe it is cheaper to program less code. Either way if the engine needed premium it would say "Premium Only."
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Old 01-08-2011, 08:43 PM   #9
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Quote:
Originally Posted by whippersnapper02 View Post
I'm saying maybe the extra tuning to get that 3 horsepower that you won't feel was replaced with some other programing. Maybe for the VSC system. Or maybe it is cheaper to program less code. Either way if the engine needed premium it would say "Premium Only."
It isn't a matter of "needing" premium. When an engine control system pulls timing to allow the use of lower octane gas, it reduces engine power output. When you use higher octane gas in an engine that has been pulling timing to use lower octane, you get the increased power output.

I have seen no reason to believe that the control software has been altered to remove that feature, and I can think of no logical reason why they would eliminate adaptive spark mapping.
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Old 01-08-2011, 08:50 PM   #10
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Quote:
Originally Posted by JKD View Post
It isn't a matter of "needing" premium. When an engine control system pulls timing to allow the use of lower octane gas, it reduces engine power output. When you use higher octane gas in an engine that has been pulling timing to use lower octane, you get the increased power output.

I have seen no reason to believe that the control software has been altered to remove that feature, and I can think of no logical reason why they would eliminate adaptive spark mapping.
Yes but why tune for 91 then say 87 is fine. No one does that. If there is absolutely no knock with 87 I doubt the ECU will advance the timing further with higher octane fuel. You have to tell it there is higher octane fuel because it has no idea what fuel you are using just by simply adding it. If removing adaptive timing for 91 saves Toyota money then they will remove it.

Back in 2000 Sport Compact car did an octane test on a 2000 Honda Accord V6. The engine calls for 87. They ran it on 87 on the dyno. After that they drained the tank and used 91. They reset the ECU and drove it around so the ECU had a chance to adapt to the 91. Back on the dyno the engine lost 10 horsepower. This was multiple runs under the same conditions.
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Old 01-08-2011, 08:53 PM   #11
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Freeing up your intake and exhaust AND THEN tuning for the changes can significantly increase horsepower on the 1GR engine.

I am running:
TRD Cold Air Intake w/ Pro-dry filter
Doug Thorley Long Tube Headers
TRD Cat-back exhaust
and tuned with:
URD MAF Sensor Calibrator

I have seen significant gains...

Stock -
http://www.youtube.com/watch?v=m91MgnoSpjs

Mods - (w/o headers)
http://www.youtube.com/watch?v=BNQFyhYqxC8&NR=1
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Old 01-08-2011, 10:56 PM   #12
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Quote:
Originally Posted by whippersnapper02 View Post
Yes but why tune for 91 then say 87 is fine. No one does that. If there is absolutely no knock with 87 I doubt the ECU will advance the timing further with higher octane fuel. You have to tell it there is higher octane fuel because it has no idea what fuel you are using just by simply adding it. If removing adaptive timing for 91 saves Toyota money then they will remove it.
Plenty of manufacturers do exactly that on many vehicles. It was true on my '98 Neon DOHC, and it is true on these engines. How could removing it possibly save money? The compression ratio has not changed...the engine configuration has not changed...so the only thing that would change is the engine control programming. There is no cost savings to be had there, and there is no scarcity of memory or processor to make Toyota trim the code.

There is just no reason for them to have removed the adaptive functionality. Here is a published reference from 2006 that shows the engine output as 239 hp and 278 lb-ft torque, matching the information in the Wikipedia article on the GR series engines. There is also a FJ manual that shows the engine rated on 91 octane at 239 hp and 278 torque. Toyota now quotes engine output for Toyota vehicles using 87 octane gas (and Lexus using 91). Unless you can provide some sort of concrete, documented source that says otherwise, then the reasonable conclusion is that the engine system still functions the same way it always has.

Quote:
Back in 2000 Sport Compact car did an octane test on a 2000 Honda Accord V6. The engine calls for 87. They ran it on 87 on the dyno. After that they drained the tank and used 91. They reset the ECU and drove it around so the ECU had a chance to adapt to the 91. Back on the dyno the engine lost 10 horsepower. This was multiple runs under the same conditions.
Great. Was the 2000 Accord V6 engine designed and controlled so that it would run optimally on premium, but would adapt for regular? If not, then their findings are immaterial in any discussion of engines that are so designed.
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Old 01-08-2011, 11:34 PM   #13
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Coming from 550+HP beast, it feels pointless trying to make a Taco go fast. Supercharger will definitely help, but will fail to meet my expectations. I seen vids on youtube of supercharged Taco's, its just creeping along. Far from stock, but far from fast.
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Old 01-09-2011, 01:18 AM   #14
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Quote:
Originally Posted by JKD View Post
Plenty of manufacturers do exactly that on many vehicles. It was true on my '98 Neon DOHC, and it is true on these engines. How could removing it possibly save money? The compression ratio has not changed...the engine configuration has not changed...so the only thing that would change is the engine control programming. There is no cost savings to be had there, and there is no scarcity of memory or processor to make Toyota trim the code.
I have never in my time being a car enthusiast have seen a vehicle tuned for a high octane say it is ok to run a low octane without stating there would be decreased performance with the lower octane or maximum performance would be achieved with a higher octane fuel. How do you know for a fact there won't be a cost savings not programming for something? Less code to be written means less hours for a tech to write the code. How do you know the capacity of the ECU? Just wondering.

Quote:
There is just no reason for them to have removed the adaptive functionality. Here is a published reference from 2006 that shows the engine output as 239 hp and 278 lb-ft torque, matching the information in the Wikipedia article on the GR series engines. There is also a FJ manual that shows the engine rated on 91 octane at 239 hp and 278 torque. Toyota now quotes engine output for Toyota vehicles using 87 octane gas (and Lexus using 91). Unless you can provide some sort of concrete, documented source that says otherwise, then the reasonable conclusion is that the engine system still functions the same way it always has.
How old are those articles? Remember that Wiki is not always accurate. From what I know FJs required premium fuel to meet ultra low emissions regulations. There was a reason it was taken out of the Tacoma and FJ manual. Maybe there was a change to the engine that even with 91 the higher power level was not achieved. Maybe the cost to the consumer of running premium fuel was not worth 3 horsepower. Something like a O2 sensor could have been changed or the injector pulse width, etc. If you look at Toyota's website the FJ is the only vehicle where 91 is recommended, probably because of the dual VVT design, and the Avalon is the only vehicle that states 91 for improved performance. In the end the higher octane is not worth 3 horsepower. If I had a jump of 10 then I would run it.

Our "current model" year vehicles have the following unleaded fuel octane rating recommendations:

MODELOCTANE 4Runner87

Avalon87*

Camry87

Corolla87

FJ Cruiser91

Highlander87

Land Cruiser87

Matrix87

Prius87

RAV487

Sequoia87

Sienna87

Tacoma87

Tundra87

Venza87

Yaris87

* For improved vehicle performance, the use of premium unleaded gasoline with an octane rating of 91 or higher is recommended.


Quote:
Great. Was the 2000 Accord V6 engine designed and controlled so that it would run optimally on premium, but would adapt for regular? If not, then their findings are immaterial in any discussion of engines that are so designed.
I posted that Accord test just to show that a simple octane increase on a engine tuned for a lower octane will not benefit from a higher octane.
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Old 01-09-2011, 01:31 AM   #15
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URD... Enough said
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Old 01-09-2011, 01:48 AM   #16
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Quote:
Originally Posted by whippersnapper02 View Post
I have never in my time being a car enthusiast have seen a vehicle tuned for a high octane say it is ok to run a low octane without stating there would be decreased performance with the lower octane or maximum performance would be achieved with a higher octane fuel.
The computer adjusts the spark maps. It "re-tunes" on the fly. Of course there is a decrease in performance on the lower octane fuel...that has been the whole point of this discussion. Some manufacturers report the higher numbers and say they achieve those horsepower/torque numbers "When using 91 octane or higher fuel". My '98 DOHC was reported this way. Toyota is now reporting all Toyota brand vehicles' statistics when using 87 octane.

Quote:
How do you know for a fact there won't be a cost savings not programming for something? Less code to be written means less hours for a tech to write the code. How do you know the capacity of the ECU? Just wondering.
The code already exists. It would take man hours to remove it. The engine computer is a modern design; it is fast, and it is flashable. It is reasonable to conclude that its design includes sufficient memory for any anticipated reflashed software.

Quote:
How old are those articles? Remember that Wiki is not always accurate.
I posted direct references. They are all 2005 and newer.

Quote:
From what I know FJs required premium fuel to meet ultra low emissions regulations. There was a reason it was taken out of the Tacoma and FJ manual. Maybe there was a change to the engine that even with 91 the higher power level was not achieved. Maybe the cost to the consumer of running premium fuel was not worth 3 horsepower. Something like a O2 sensor could have been changed or the injector pulse width, etc. If you look at Toyota's website the FJ is the only vehicle where 91 is recommended, probably because of the dual VVT design, and the Avalon is the only vehicle that states 91 for improved performance.
I suppose it is possible that Toyota would intentionally redesign the engine (at great expense) so that they could revert back to the level of engine control technology that was common in 1992.

Quote:
You haven't provided any proof that the single VVT 1G was or wasn't tuned for premium fuel.
I posted three references that attest to exactly that, one a published book from 2006 and one a technical manual from Toyota. If that isn't proof, I have no idea what would be.

This has strayed far enough from the OP's topic, this will be my final post on this topic in this thread.
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Old 01-09-2011, 03:03 AM   #17
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I agree with JKD bro, here man all you need is a CAI, Headers, URD supercharger, upgraded pulley and a calibrated ECU and you've got yourself 400HP... This link will help you go far. Just go check out this link and it will lead you to plenty of parts you need. http://www.urdusa.com/ Follow the X-runner guys if you wanna know more. You have the same engine just different suspension!
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Old 01-10-2011, 05:02 PM   #18
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thanks

thanks guys for the help i have looked for the super charger but not sure if i can find one for such a new year tacoma
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Old 01-10-2011, 05:05 PM   #19
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Quote:
Originally Posted by whippersnapper02 View Post
Running higher octane doesn't do anything on vehicles tuned for 87 octane. On the earlier years of the 2nd gen the manual said 91 for increased performance and maybe then it did something but it was eliminated from the manual. No one has any proof that 91 does anything for our trucks of then people saying it feels faster.

OP: Supercharger alone or headers, intake, exhaust, maf calibrator all together will give you a nice jump.
I know for a fact I get 2-3MPG better when filling up with premium. Not sure if that would be considered an increase in performance though.
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Old 01-10-2011, 05:05 PM   #20
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A 2010 would fit. Ask the techs at ur dealership but it Should work as it's the same truck as the 2009-2010...
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