LEgEnD4LiFe said:
Chris,
how much of a difference does it make anyway?
also btw the Jet V-force works a little differently............it is working all the time, not only at aggressive throttle ..........
also i am not sure but it might also be active all the way upto redline..............because the Venom only works upto 5,000 RPM, if i am correct. Has anyone used a Jet V-Force???? JET also makes ECU chips btw....................I dont have a dyno around here and i dont think i would be able to tune it myself anyway, but i wud really like to get an Apex S-AFC............but i dont see how i could tune it.....................
I was able to get a consistent .2 better time with the Venom on my 6-Speed, I couldn't really tell much of anything, only that something was different during acceleration. However, using an accelerometer like the G-Tech, I was able to measure very consistent .2 second better average times. I know people claim the G-Tech in not accurate, but the unit is very consistent, so no matter what the base line time was, added performance will show consistently. The ET times may be off a bit, but the gains shown are consistent and pretty accurate.
Anyway, think about this. Both units use the TPS and MAP sensors inputs, and modify them for supposed better performance. The MAP I believe uses a 0-5V system. Each manufatures unit can only modify the signal up to 5V which would indicate WOT, or maximum manifod pressure. I'm no expert, so people can corect any errors I may have, but I believe the ECU reads the TPS signal, reads the MAP signal, and accesses a particular fuel and timing map that is pre programmed. What each manufacturers unit does is modify the TPS signal so the ECU thinks it is in a different possition, but also importently, it modifies the MAP signal to sometning other than what the MAP signal would have been at that given TPS signal. The importent thing here is that if the units just modified the TSP signal to trick the ECU into thinking you were pressing more throttle like some people believe, the MAP signal would reflect the same respective signal, and no performance gain would be had. But, since it changes the MAP signal, the ECU is supposedly able to access a differnet fuel and timing map that would be more agressive for that particular TPS possition.
Now my whole point is that both units works up to WOT. At some point, each unit will have modified the MAP to show a max 5V, and anything after that is useless. So, the Jet can work up to WOT as well as the Venom works up to WOT, and after that, no matter what Jet says, it will offer no performance gain, as the ECU will not recognize any signal other than the max volatge. However, like you mentioned, the Jet may indeed work at a lower TPS setting than the Venom which seems to kick on at about 1/3-1/2 throttle (indicated on the gas pedal). Also, the Jet may have the advantage of being release a couple of years after the Venom, so the program may be more agressive. I personally believe that at WOT, both units should be identical. However, the powerband that each manufacturer programmed for may be more attractive to some, over the other. But the ability to turn the Venom off when fuel mileage is importent is an attractive idea on the Venom.
Now, with all that said, for the money, I would rather get the Bayou chip, or wait to see how the Weapon-R performance ECU works. If the Jet and Venom were about $175-$100, then I would say those units would be worth the effort. Even though I still say the Venom has some real world measurable worthwhile gains, at the current price of $300, it is just not worth it. I got it off the group buy for $275 long ago, so that is why I have one. I am still selling my Venom $400 for a price of $150 for anyone who wants to try it out.
