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Old Aug 28, 2010 | 01:51 AM
  #16  
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^+1. give more R&D money to joe z so he can keep developing nice goodies for our cars.
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Old Aug 28, 2010 | 01:35 PM
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where can i buy Joe_Z intake ?
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Old Aug 28, 2010 | 05:55 PM
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Originally Posted by funglenn
Would love some of your thoughts. I recently moved to Colorado Springs, (about 7000 ft) and the car is now less responsive and more sluggish.

When I talked to lexus they said it is normal for this altitiude and there is nothing they can do.

Therefore I am thinking of a air intake upgrade. Can anyone recommend one over another? Will it help get more power in higher altitudes? If not I guess sort of pointless rightnow. There are not alot of reviews on line. Also looking for a dry non-oil model since I have seen bad things in the past when they are over oiled.

thanks
When you said you talked to Lexus, was that corporate or the local dealer?

I would think the local dealer should be able to adjust he fuel/air mixture for the higher altitude.

You might wantto question a local REPUTABLE shop about a solution.

I doubt just putting on an intake will compensate for the altitude change.
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Old Aug 28, 2010 | 09:07 PM
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Originally Posted by EJC
When you said you talked to Lexus, was that corporate or the local dealer?

I would think the local dealer should be able to adjust he fuel/air mixture for the higher altitude.
Say what?

Are you thinking these cars have carburetors or something?
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Old Aug 28, 2010 | 09:24 PM
  #20  
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Originally Posted by Kurtz
Say what?

Are you thinking these cars have carburetors or something?
Obviously they don't have carberators.
But you still have a fuel/air mixture, call it a ratio if you prefer. Can the computer controls for the fuel injection be adjusted? If the dealer can't adjust the chip settings can a speed shop?

Last edited by EJC; Aug 28, 2010 at 09:28 PM.
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Old Aug 28, 2010 | 11:57 PM
  #21  
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can't hack our ECU.
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Old Aug 29, 2010 | 05:19 AM
  #22  
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Originally Posted by Jetfire
can't hack our ECU.
Anything can be hacked, ask my kids.:
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Old Aug 29, 2010 | 07:07 AM
  #23  
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Originally Posted by EJC
When you said you talked to Lexus, was that corporate or the local dealer?

I would think the local dealer should be able to adjust he fuel/air mixture for the higher altitude.

You might wantto question a local REPUTABLE shop about a solution.

I doubt just putting on an intake will compensate for the altitude change.
I talked to the local dealer here in colorado springs--Kuni Lexus. They seemed reputable and decent guys--loaner, knowledgeable, etc. The two service advisors nodded their heads and said it was a common problem due to the altitutde.

The intake will not compensate, but i hope a free flowing exhaust helps a bit--even something is better than nothing.

Anyone else been abel to adjust through third parties?
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Old Aug 29, 2010 | 07:16 AM
  #24  
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Originally Posted by funglenn
I talked to the local dealer here in colorado springs--Kuni Lexus. They seemed reputable and decent guys--loaner, knowledgeable, etc. The two service advisors nodded their heads and said it was a common problem due to the altitutde.

The intake will not compensate, but i hope a free flowing exhaust helps a bit--even something is better than nothing.

Anyone else been abel to adjust through third parties?

Changing the intake and the exhaust will probably not have an effect. Apparently Lexus agrees with the intake.
What surprises me is the on board computer doesn't compensate the fuel flow to match the air flow change.

That's why I suggested talking to a local speed (REPUTABLE) shop (your local Lexus dealer might be able to informally suggest a shop). I doubt that you are the only one having this problem. Of course if they should have a chip you will probably void any warranty that is left.
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Old Aug 29, 2010 | 08:20 AM
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Originally Posted by EJC
Changing the intake and the exhaust will probably not have an effect. Apparently Lexus agrees with the intake.
What surprises me is the on board computer doesn't compensate the fuel flow to match the air flow change.

That's why I suggested talking to a local speed (REPUTABLE) shop (your local Lexus dealer might be able to informally suggest a shop). I doubt that you are the only one having this problem. Of course if they should have a chip you will probably void any warranty that is left.

First, there is no "chip" for the car and the ECU can't be touched.

Second, the computer DOES compensate by adjusting the AFR. As do pretty much all cars made in the last several decades.

You're misunderstanding the problem.... the A/F ratio can't fix his problem.

Where he lives, the air is much thinner.

The ECU then adjusts the fuel trim (leaning it) because he's getting less dense air and therefore needs less fuel. This is why you need to rejet a carburated car at high altitudes and any modern car does it automatically.

But the ECU can't "thicken" the air so there's nothing else "adjusting" the car could do for him and he's still going to be short on power compared to sea level.

The engine still only has capacity to take in X amount of air per engine cycle, and now that X amount of air has less oxygen in it.

An intake would theoretically "help" because he'd be getting more air in, even if it was less dense.

I doubt it'll help much, but not a whole lot else would besides having him bring his own atmosphere with him (forced induction of some kind, which is not really worth doing with these cars)

Last edited by Kurtz; Aug 29, 2010 at 09:22 AM.
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Old Aug 30, 2010 | 03:00 PM
  #26  
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where is the best i can buy the Joe-Z intake ?
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Old Aug 30, 2010 | 06:36 PM
  #27  
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Originally Posted by TOMMYPHAM
where is the best i can buy the Joe-Z intake ?
Other than finding a used one in classifieds only place that sells it new (AFAIK) is:

http://l-tunedparts.com/product/?id=2804
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