Quote:
Originally posted by TMontana
Thanks for the replies guys. I have the fuel pres gauge under the hood. I scrapped the JR EMS. I have the fuel system described and the J&S v2.
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Why, Tmontana, why??
Who gave you the impression that you'd be able to remove the EMS (and told you that everything would work fine)? Are you preparing for a standalone setup of some sort and doing some of the busy work now?
Do you realize that right now, your ECU is receiving positive manifold pressure (assuming you did the JRSC install correctly and connected the MAP sensor to a boost/vacuum source on the S/C adaptor plate)? Do you realize what happens to the ECU when this happens? It freaks out, b/c it isn't programmed to know how much fuel to add under boost. That's your bogging right there.
On top of that, you're adding even
MORE pressure using the V-AFC.
You could get around the pressure issue by using the MAP-limiter function of the J&S and by easing off the fuel settings on the V-AFC, but you'd still be plagued by the problem below.
Do you also realize that you're susceptible to part-throttle leaning and/or detonation because you'll still be in Closed loop mode at part-throttle? You won't have that problem with the EMS.
Re-connect the required electronics exactly as described in the manual, then get back to us. If you wanted to emulate schwett's setup exactly, then you might as well have gone all the way and kept the EMS like he did.
The J&S retards only a certain amount of ignition timing across the entire RPM range. The EMS doesn't, it takes most of it from the midrange, and little elsewhere.
Quote:
Originally posted by TMontana
How do I test my A/F meter?? What is the ECM-D? The primary o2 sensor has four wires, two white, one black(o2 signal) and one gray(o2 reference). My J&S monitor(A/F meter) taps into the gray and black wires. I'm gonna go check the ground now.
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Edit: Sorry. I completely read past this.
Have you verified this with a JDM helm's?
For reference, on USDM ECU's, it's the SOLID white wire that contains the signal. You'd think that the black wire would be for ground, like on every ECU wire. Oh wait, it is.
Try one of the white wires. If it doesn't bounce back & forth at idle, try the other. (make sure the engine's fully warmed up)
Also, switch the ground wire for the J&S A/F portion into the black wire.
Quote:
Originally posted by TMontana
Where do I get a vacuum line restrictor???
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Contact Jim Helbring of Motorvation Motorsports. He sells those for all the Cartech FMU's. (205) 854-8458
(This isn't an advertisement for Jim. I just know he keeps these in stock. You could check with the place that sold you the Cartech unit.)
Quote:
Originally posted by TMontana
I'm still at 6psi. We put the aquamist on in prep for 9-10psi and that is coming on @3psi, I should probably turn it off for now. FYI a 3" pulley won't fit on our blower, we're making a bigger pulley to go on the drive pulley where the coupling mechanism is.
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FYI, Jim (from the aforementioned shop) is currently making those for ~$140. If your guy is cheaper, more power to you.
Also, which Cartech FMU did you purchase?
I hope you still kept that EMS somewhere...
Please don't blow another JRSC H22A.
