| Well, here it is. Unfortunately these results are incomplete, however, we can draw some initial conclusions about what to expect. Let me first inform you of how this dyno session went. The initial pull with the new inlet piping was done with the boost controller unchanged from when the original pulls were made at with the OEM inlet pipes. The car was overboosting into the 20psi range before I had to let out and further adjust the controller to get the boost to peak at 18psi, which is what the original pulls were made at with the OEM inlet pipes. I had to make 3 more partial pulls to get the boost dialed in, which heatsoaked the powerplant components a good bit. Once I had the boost properly set we made the second pull, which is the result you see below. But here's where the problem comes in - at about 4700RPM we lost an injector and a cylinder dropped out. ******** DO NOT BUY JECS 750CC INJECTORS FROM CONCEPTZPERFORMANCE! ********** In the last 4 months the owner of this car has already replaced one injector and this is the second one to go. As anxious as I am to see the results it just kills me when stuff like this happens. Fortunately when we powdercoated this customer's plenum we also ground off all of those chunks of metal that make it impossible to remove the injector caps and we can easily replace injectors without a plenum pull. Unfortunately we do not have any of these injectors on hand. So, #4 injector decided to throw in the towel half way through our "facial shot" dyno pull and is now officially ohming out at 0.958K ohms. :-( At least COZ puts a warranty on these injectors, but interestingly enough, one of their workers tried to convince our customer that if the brass nipple on the pintle stop is broken off, it will cause this to happen. ROFL. The pintle stop is only to calibrate the flow of the injector and has nothing to do with the impedance of the coil. Again, I digress. But take that for what its worth. I guess Mr. Murphy had his day today or April fools on me. The results have taken me for surprise. We are looking at a 50HP gain around the 4500RPM mark and significantly improved HP/TQ from 3500RPM and up. I can only imagine what we will find on a vehicle that is producing 600, 700, or more at the wheels..... and this is with the V1 inlet pipes. The V2 inlet pipes flow even better! Here's the chart:
 The customer will get a replacement injector next week and we will re-dyno the car to get the other half of the results. I apologize for only giving half of the results. I have no intentions of keeping anyone on the edge of their seats with this. So please bear with me and as soon as we have the full results in hand, I will post them up. Additionally, when I built my Z several years ago I used 2.5" tubing for the turbo inlets and accordion sections. I left the pipes that run underneath the headlamps in place. My turbo inlet pipes neck down to a 2.1" i.d. like the V1 pipes do. When time permits, I will be installing the Selin Translator with pipes for the planar arrangement to replace the OEM pipes still in my car as well as building new turbo inlets to increase the i.d. to 2.37".
Enthusiasts soon understand each other. --W. Irving.
Are you an enthusiast? If you are out to describe the truth, leave elegance to the
tailor.
Albert Einstein
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AshSPEC Turbo Inlet System >>> Preliminary Dyno Results <<<< - 
21:01:15 04/02/11
