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| SP Diesel Performance Module Test Update....... http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=35481 |
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| Author: | Turbo Tim [ Thu Aug 28, 2008 9:12 pm ] |
| Post subject: | SP Diesel Performance Module Test Update....... |
For those who just want to know what this is doing, here it is. First, it DOES NOT alter the MAP signal. It does use it for toggling the fuel pressure sensor in Economy Mode and some of the higher mode settings. In Economy Mode, if the MAP is under 3 PSI of boost it leaves the fuel pressure alone. Above 6 PSI, it raises the fuel pressure anywhere from 10% to 25%, depending on the original value of the fuel pressure. In most of the other modes, the boost pressure doesn’t play much into it as it just fixes the fuel pressure at a set % over the incoming signal. The higher the mode setting, the more it boosts fuel pressure, up to about 15%. (This is calculating the voltages from 0 to 5 volts. The actual pressure will be this same ratio I believe). Some of the higher modes will also toggle with the MAP above 6 PSI to raise the fuel pressure. This box is more than just a few resistors and other parts. It is running a micro-controller, which is running software that is messing with the fuel pressure values. Obviously someone has put some research into this box, as I’m sure other brands have too. The difference is going to be their program that they stuff into the box. Hopefully one of the other brands will up the boost pressure as well. So, does anyone else have a different brand that we can test? |
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| Author: | Pablo [ Fri Aug 29, 2008 4:10 am ] |
| Post subject: | |
Wow, very informative. Next month I am thinking about purchasing the InMotion ECM hand held flasher. It just seems like the proper place to adjust stuff is in the ECU, where you have access to everything. I will ask InMotion if they do anything with the boost. |
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