The pump in the j30 should be the same as the NA pump. Don't see why it would be different. and that might be cheaper because it doesn't have the "Z" mark up.
I did find some neat little tid bits while I was searching around....
The difference between the controllers is that the TT one allows the pump to operate on low speed at lower RPMs and high speed at high RPMs. If you stick with your NA controller, the pump will always operate at high speed.
Implies that the NA fuel controller just does on and off. Other places have said that the NA does low and high. This also implies that the TT only does low and high, but several other sites say that the TT does low, med, and high....
[quote]A TT pump will go 65 psi @ WOT and a NA pump will never go past 43 psi. A NA pump won't due if your swaping NA to TT.
So, controllers aside, at 12volts, the TT pump moves far more fuel than the NA pump. So the TT pump would be the "upgrade" pump for the NA. From what I can tell, it would be like dropping in a walboro in a stock 240. Overkill amount of flow, and an increase in fuel pressure.
Right, a TT pump is a 3 stage pump. 6V, 8V & 12 volt.
This directly contradicts what the first quote implied about the TT pump, or fuel control mod. rather, only being 2 speeds. From an economy stand point, it seems to make decent sense. Low for idle and low RPMS. Med for high RPM, but no load/no boost and high for in boost.
If that is the case, then that supports the idea that the NA control would do the same, low for low RPMS, and high for higher RPMS/load.
Because the TT version is a 3 speed it's needs the ECU and Controller off a TT car to understand it.
However, unless you're planning to change you engine to a TT, there's no need to put a TT pump in your NA. The NA pump will handle all the power you can throw at it...
further supports the whole 3 speed thing.
But again, no info about the NA controller. If the NA is just on and off, then what does it need the controller for? This weekend, I'm gonna break out the multi meter and see if I can get some voltage readings and see if it changes with RPM.
The NA pump can still handle quiet a bit of power, but I'm wondering...
-Would a TT controller with a NA pump do anything for gas mileage? the thought being that the low might be lower than the NA low (if it has one) which would save gas at idle and low rpms when you're going slow anyway.
-Would a TT controller with a TT pump put out the same flow at "medium" as the NA pump would at max? and if so, would you be able to wire it so that the controller jumped to high when you wanted it to, say for a shot of nitrous?
-Would a NA controller with a TT pump (assuming the NA controller does have a low and a high) allow for the same gas mileage under normal use? And would it do anything for engine responsiveness?
What about the TT controller with the TT pump?
People swear a walboro pump with its increased low and pressure in a 240 makes the engine more responsive.