Questions about Dali chip

[gobble]

I was wondering if anyone would know the answer to a few questions.

What does the Dali Chip actually do to get extra horsepower?

Why didn't Honda program the chip this way in the first place? Does Dali know more than Honda? What is the compromise?

How did Dali figure out the changes that needed to be made?

 

[NSXGOD]

Originally posted by gobble:
I was wondering if anyone would know the answer to a few questions.

What does the Dali Chip actually do to get extra horsepower?(1)

Why didn't Honda program the chip this way in the first place?(2) Does Dali know more than Honda?(3) What is the compromise?(4)

How did Dali figure out the changes that needed to be made?(5)

It is usually best to ask the source if you want to know something about the part.
in order:

1) I don't know exactly, no one on the list does either unless they were the chip programmer, and he was a Japanese guy from Japan who lives in Japan.

2) I don't know, perhaps they wanted to make sure that the NSX could run on regular if need be.

3) some might think so and some might not - it might depends upon whether I passed them on the track.(or not)

4) you need to run premium. (no I have never heard it ping)

5) I didn't, I paid someone that did.

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need more info? please private me @

[email protected]

Mark Johnson, CEO of Custodial Services @ Dali Racing, a Not For Profit Company.

 

[BoneZ]

Mark you kind of sidestepped the first question, although you stated you didn't know what was done, you didn't leave any opportunity to come back with an answer later, like "I will find out for you".

He wants to know what exactly you do to get more HP?

My guess would be (since the chip goes into the ECU, which plays the large role of fuel management for your car and various other things too)... that there is some adjustments to the fuel ratios along the RPM scale.

I mean in all reality you can't change the laws of physics. So to get more horsepower you need more air, better compression ratios, depending on the scenario more fuel etc etc etc... some way of creating more combustion to produce more power.

If all you are doing is changing a chip, the only major thing you can do is change the fuel, and VTEC timing. Changing a chip doesn't make your car suck in more air as its driving

unless of course someone wants to get into the whole VTEC opening/closing argument... but thats another topic in itself.

Hope this helps...

-B

 

[Russ]

Originally posted by BoneZ:
If all you are doing is changing a chip, the only major thing you can do is change the fuel, and VTEC timing.

Don't forget spark advance curves - these play a major role too.


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Russ
'91 black/black

 

[Ponyboy]

But isn't that kinda like asking Coca-Cola what their formula is?

As long as it tastes great (performance) and doesn't give me cancer (all blown up engine) then I'm cool wit' it.

 

[wildbill846]

Fuel mapping is a major thing that can be changed for performance increases on street legal vehicles. Quite often the cleanest burn and EPA friendly engine isn't always the biggest horsepower producer, so companies make a compromise. For instance, my fuel injected Buell motorcycle was intentionally mapped to be too lean for max power from the factory in order to pass emissions testing. When I went to an aftermarket exhaust, it was so free flowing that the ECM (which could only correct for small variance due to EPA limitations) couldn't program enough fuel into the mixture and my bike starting pinging and running hotter. When I changed to the race ECM that didn't have the EPA limitations, the bike ran smoothly once again and with a whole lotta more power.

 

[gobble]

Thanks for the responses. The chip went in over the weekend and I can't wait for the snow to melt so I can start driving the car again.

 

[NSXGOD]

Originally posted by BoneZ:
Mark you kind of sidestepped the first question, although you stated you didn't know what was done, you didn't leave any opportunity to come back with an answer later, like "I will find out for you".

I didn't ask them what they did when I picked up my car - I was just happy that it worked out as well as it did. All I know is that the tuner plugged a laptop into the ECU and hammered on it and then ran the car on the dyno and repeated the process for ~ 8 hours while I read car magazines and listened for the sound of my motor exploding. (I didn't hear it).

They apologized that they could only get + ~12-14 NET RWHP, however, that was good enough for me.

The VTEC point was not altered. The redline is +200rpm.

I have no idea what was done exactly. Most NSX's with the chip and CATS still pass smog tests in CA.

I don't consider it sidestepping the question if I don't know the answer and state that. The tuner is not available for questioning, and he wouldn't tell any of us anyway even if he was as:

a) it is his skill and knowledge I was paying for - why would he give it away?
b) he didn't speak English.

------------------
need more info? please private me @

[email protected]

Mark Johnson, CEO of Custodial Services @ Dali Racing, a Not For Profit Company.

 

[nsxtasy]

Originally posted by NSXGOD:
The VTEC point was not altered. The redline is +200rpm.

You mean they raised the rpm at which the rev limiter kicks in... right?

(Doesn't the term "redline" normally just refer to the maximum RPM indicated on the tachometer?)

 

[true]

whatever

[This message has been edited by true (edited 26 March 2002).]

 

[nsxtasy]

Whatever?

[This message has been edited by nsxtasy (edited 26 March 2002).]

 

[true]

whatever

[This message has been edited by true (edited 26 March 2002).]

 

[nsxtasy]

Whatever?

[This message has been edited by nsxtasy (edited 26 March 2002).]

 

[true]

whatever

[This message has been edited by true (edited 26 March 2002).]

 

[nsxtasy]

Whatever!

 

[4g62bt2c30a]

Originally posted by nsxtasy:
Whatever!

So thats how you got to 3589 posts

 

[nsxtasy]

Three "whatever!"s in this film clip (240K).

[This message has been edited by nsxtasy (edited 01 April 2002).]