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Did you get my email? |
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| Posted by |
TwinTurboPete on August 21, 2003 at 11:28 PM |
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This message has been viewed 94 times. |
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| In Reply To |
I'll take a stab at the Q's. >>> posted by AshsZ of Z1Motorsports.com on August 21, 2003 at 04:24 PM |
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| Message |
About tuning my car?
:I hope you may understand some of the reasons for my answers and not take it personally..
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:What was your timing set at for each of these runs?
:Base timing was set too 15 degres. Map timing is dynamic and there were upper limits I set specifically for the reason that you can't hear detonation with external wastegates. I wont be publicizing the maps - with other people being in the ECU business now, I'm not interested in doing other people's homework for them. (<-This is one of those 'understanding' parts I mentioned).
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:Do you have the charts with A/F?
:I do.
:Non-NOS pulls were 11:1 at the lowest.
:NOS pulls were ~10:1
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:How did you manage to get the wastegates to hold 24psi all the way through the run? It has been my personal experience that the wastegate springs in these wastegates will not hold more than 21 psi on the dyno.
:This was one of the reasons that several of the initial pulls were made - there was continual adjustment made to the wastagates to get them to perform at 24psi. The boost did fall off a bit down to ~22psi after ~6500RPM.
:Did you do any NOS runs without freezing the ICs?
:A couple were made, but not to find the peak power in that confguration.
:I am aware of many instances where cars have gained 75 HP or more by freezing the IC alone, nothing more. IMHO, this is not a real-world number. You know that I like your car, and that I get along fine with you. But, the freezing-the-IC number is not really representative of real-world power, and if you do it often enough, and/or with a hot enough core/end tanks, you will end up with cracks. Again, not hating on you, just want to throw my 2 cents into the ring.
:You are caught up again in this misnomer of freezing the IC. There is NOS sprayed onto the front of the IC during the pull. It alone probably adds 25HP, but that's not where all the power gained is coming from. You are forgetting that the intakes are drectly behind the IC. The power this car is making on the dyno is consistent with what it makes on the street.
:Most of the people on here these days in all likelihood don't even know who I am or what I do or do not know, or what I am about. I haven't been one to toot my horn on the board that much. That said, to tell you the truth, I will dyno my car again one day soon. I would certainly consider hosing down the IC's, if for no other reason than to see how the benefits of the cooled intake charge parlay onto the charts. However, the charts I will post as 'representative' of my cars' ability will be:
:1) the pump gas chart with boost and timing set at what I run it on the street on pump
:2) the race gas chart with boost and timing set at what I run it on the street on race fuel (unleaded)
:Having the ability to switch between ECU programs allows you to cater to the different performance characteristics and requirements when using multiple power adders. Having just a single program running in the car presents severe limitations and it will only properly cater to one particular configuration. In Wagz's case, he has two programs which cater to 3 dfferent scenarios. Pump fuel, Race fuel, Racefuel + NOS.
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:That said, good job again on the car. The widebody looks great!
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