venom 400 performance module!!
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It absolutely does NOT add 25% power. In fact it's worth exactly 0% additional power. All it does is make it seem like you're pushing the pedal down further than you actually are, which gives the illusion of more power. Once you reach a certain point on the throttle pedal (say, 80% down), you are essentially at WOT and if you go past that 80% position, it will change nothing because you'll still be at WOT.
This is probably the biggest waste of money out there.
This is probably the biggest waste of money out there.
rriiiiigghhttt! that is just a typical honda owner for you, talking smack out of their ass.
it is junk and a gymick, don't waste your $.
it is junk and a gymick, don't waste your $.
Originally posted by jdogg:
hmmm... had a friend that has it on his integra LS and he swears by it... Says it's one of the best mods he's done and that he actually hung with a turbo'd integra in a race... I dunno![]()
[ May 16, 2001: Message edited by: jdogg ]
After checking out their site and reading the installation instructions I had almost convinced myself that it could have some value on certain cars (mechanical throttle body linkage) by allowing them to think they were at WOT earlier and therefore go open loop (CAFE requirements be damned full speed ahead - I know that the Ford and GM units do this / no idea about Toyota). In a throttle-by-wire car, assuming they use the TPS as control loop feedback (just an assumption - anybody know for sure), I would suspect this would make throttle input quirky at best.
Adjusting the MAP/MAF a little is a pretty common tuner practice.
Terry
Adjusting the MAP/MAF a little is a pretty common tuner practice.
Terry
IS300GTE wrote:
What confuses me most is how this would work at all in a throttle by wire car. If there is closed loop control between calculated throttle position (presumably a function of pedal position, speed when cruise control enabled and input from the trac control) and measured position as indicated by the TPS I just don't see how this could possibly work. If it isn't really closed loop and the TPS is just used for rough position (idle/closed, tip in, open, WOT) and they get it into WOT engine management mode at part throttle (assuming you were not on your way to WOT anyway in which case you get this advantage for fractions of a second) then there may actually be a little bit there. WOW - now that is a THIN argument. I am still firmly in the highly skeptical camp on this one.
While we are on this topic - can anyone give an authoritative review of how the IS300 throttle-by-wire works? Do they use the throttle plate instead of an idle air bypass valve since they 'appear' to have control over the throttle plate position? Or do they only have the ability to damp throttle input? Is cruise control integrated into the system or is it stand alone?
Thanks
Terry
Sure seems like that would be the case if they advance it too early. I suspect/hope that they actually just apply a gain function to the signal and don't just toggle between closed and wide open. It could be made even worse if this signal is an input to the valve/flapper that shortens the intake runners. That type of system is typically controlled by RPM (or I think I read that Toyota uses manifold vacuum) so it might not be a factor there.
What confuses me most is how this would work at all in a throttle by wire car. If there is closed loop control between calculated throttle position (presumably a function of pedal position, speed when cruise control enabled and input from the trac control) and measured position as indicated by the TPS I just don't see how this could possibly work. If it isn't really closed loop and the TPS is just used for rough position (idle/closed, tip in, open, WOT) and they get it into WOT engine management mode at part throttle (assuming you were not on your way to WOT anyway in which case you get this advantage for fractions of a second) then there may actually be a little bit there. WOW - now that is a THIN argument. I am still firmly in the highly skeptical camp on this one.
While we are on this topic - can anyone give an authoritative review of how the IS300 throttle-by-wire works? Do they use the throttle plate instead of an idle air bypass valve since they 'appear' to have control over the throttle plate position? Or do they only have the ability to damp throttle input? Is cruise control integrated into the system or is it stand alone?
Thanks
Terry
I dont know, but it does get expensive if you don't do it your self. The bilstiens are pretty stiff, not to harsh though, I can tell the difference, the road is easier to feel. I like it, it gives you the
"race car" feel. It depends if you will try to install yourself or not.
"race car" feel. It depends if you will try to install yourself or not.
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