Originally Posted by BOLIO 671 Tony mentioned that he spoke to you about doing the Dyno on 5th gear instead of fourth...Just wondering shouldn't the Dyno guys at the shop
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04-21-2010, 12:46 PM | #61 (permalink) | |
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04-21-2010, 02:04 PM | #62 (permalink) | |
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As far as some people saying the ECU does not need time to learn the new mod, they are WRONG. Miles put on the car are an adjustment period as well as multiple runs on the dyno. The ECU cycles constantly and whatever the cycle period it is in terms of miles is the adjustment period. I have done over 100 dyno pulls with the 370Z alone and on over 5 different cars. I have seen the pattern I just explained above formed on all of them. I am confident that once you go back to the dyno and they dyno the car in the correct gear (5th) along with 6-8 pulls you will see the difference. Kyle @ Stillen and I do not agree on much but the one area where there is no argument is the multiple dyno pull method. I have applied it to all of the dyno testing we have done and it works. Tony
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04-21-2010, 02:25 PM | #64 (permalink) |
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He got is baseline in 4th, so even if he goes back to get a run in 5th, he won't be able to compare to his baseline.
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04-21-2010, 02:25 PM | #65 (permalink) |
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Well I guess I can skip the learning part since I will need to get the car tuned up since I will have stillen CAI+FI CBE + FI LTH.
lean vile. what are the dangers off running too lean. |
04-21-2010, 02:38 PM | #66 (permalink) |
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Engine goes kaboom.
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04-21-2010, 02:41 PM | #68 (permalink) |
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Anytime you are outside of the normal range for any car you run the risk.
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04-21-2010, 03:09 PM | #69 (permalink) |
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Well all it is going to do is show lower numbers across the board if dynoed in 4th.
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04-21-2010, 03:57 PM | #70 (permalink) | |
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04-21-2010, 09:05 PM | #71 (permalink) |
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I've posted my review as well. F.I. Long-Tube Headers installed - Review/Pics/Vids/Dyno
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04-21-2010, 09:45 PM | #72 (permalink) | |
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04-22-2010, 10:51 AM | #73 (permalink) | |
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I am assuming that you are seeing these gains after the ecu has recently been reset, correct? I'm sure most people who do major mods to their vehicle, disconnect the battery. At least I hope they do. That being the case, I'm sure you know that after the ecu loses power, it reverts back to a predetermined, SAFE ignition timing strategy. As the engine runs, it slowly adds back in more timing until it is at its max power potential, while still maintaining no knock. The gains you are seeing is just this; the ecu adding in the timing it REMOVED after being reset. |
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04-22-2010, 12:15 PM | #74 (permalink) | |
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Test A: Dyno the car to get a baseline. Then bolt up a new exhaust system and intake system. Dyno the car immediately after. Do 2-3 runs on the dyno. The gains may be there or they may not. The ECU has had not time to adjust or correct. Do it the same way but now dyno run the car 6-8 times and you will see in that amount of pulls the ECU will start to adjust and now know the new mods. Your gains will be much more substantial. Test B: Dyno the car and get a baseline. Then bolt up a new exhaust system and intake system. This time take it out and put some miles on the car. Usually 50-100 will work. Then come back in and do 2-3 dyno pulls. Now these dyno pullls should be higher than the first three from test A. Because you drove the car and put miles on it, you allowed for the ECU to learn and therefore should not need as many dyno pulls. But if you want, do a few more pulls for peace of mind. Personally I do not like to disconnect the battery unless I am doing a major install like the headers or intake. If you disconnect it, it will take longer for the car to learn the new mods. I am not talking out of my hip on this one. I have done it with this car and seen the patterns... Tony
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