rsiwicki wrote:The NOS system from Stillen does have a NOS ECU for it. Stillen said that I needed the upgraded regular ECU as well as the NOS ECU to make it work correctly, otherwise Stillen said that they could only sell me some basic NOS kit that was not as advanced as the one that goes with the upgraded ECU. Below are the prices they quoted me.
ECU $605NOS ECU $365NOS Hardware @ 70 Shot $750
I have the JWT ECU with 100 shot n2o program. FWIW, this is how it works. The ECU is upgraded with their standard program which bumps the rev limiter up, trims fuel maps slightly, and utilizes a more aggressive timing map. Then, a n2o module is installed inside the ecu and there are several wires coming out of the ecu itself. One is a twisted pair of shielded wires with a rocker switch. The other pair is a plug that attaches to a relay. On the output of the relay is a hot wire that goes to the Cheater solenoid. (As opposed to the smaller powershot solenoid from NOS). You simply ground the solenoid to the intake where it's mounted & attach the hot wire from the relay to the positive terminal on the solenoid. When the rocker switch is flipped to the NOS program, even while driving, it changes the ECU program itself to a different set of parameters that looks for wide open throttle & a certain rpm before the n2o module sends a signal to the relay to fire the solenoid. Assuming you have adequate NOS in the tank & the tank is opened, at X rpm it lets the n2o flow, then the ecu turns the solenoid off at X rpm, usually 200 rpm before redline. The n20 program widens the pulse width, or time the injectors are open & retards the timing for use with the n2o.
As Wes said, you must make absolutely sure the engine is in perfect tune before engaging any shot, and there are a lot of things you must do in order to not cause harm when it's engaged. There's even a procedure to force a timing change on a n2o equipped ecu upgrade only. It will not accept an ignition timing change the normal way. I don't know if even a consult can force a change on a n20 ecu. The JWT setup is meant for the timing to be exactly that of spec, with no variance. In our case, as well as on an SR20, that's 15 degrees, no +/- 2, particularly no +2.
On the Q, we're lucky. On other apps using this system, you have to upgrade the injectors to the ones the Q already has. (Purple 370's) It's also a good idea to upgrade the fuel pump, also to the one we already have.(Q45 or 300TT 90-95)
With that being said, I hope it makes sense. Now, as far as cost, you should expect to pay roughly:$500 hi perf program$350 for NOS moduleroughly $450(?) for the solenoid, lines & bottle kit.
I know I can get you the ecu with nos program and a tcu upgrade for $1250 + shipping. Then you can always add the NOS hardware kit later. The way to do that is to get a loaner ecu & tcu from someone here & send yours to them for the upgrade. Be patient, it takes a while.
PLEASE don't let anyone talk you into a wet nos system for your car. The intake manifold wasn't designed to flow "wet", rather it was designed to only flow air or in this case, gas vapor (n2o).
If a wet system is used on an efi dry manifold app, it's not a matter of "if" but "when" you're going to have a nitrous backfire which is when the fuel sprayed in the manifold "puddles" or recondenses into liquid and pools in the manifold. When it ignites, it's enough force to blow the manifold apart, or at least blow the throttle body plate outwards, as well as blow the airbox apart & destroy the MAF. Not fun.
