Tech question for FI, espically Maggie guys
Thread Starter
Burning Brakes
Joined: Feb 2012
Posts: 901
Likes: 2
From: Palm City Fl
Tech question for FI, espically Maggie guys
I was just looking at installing a Vararam Powerduct on my 02Z that has a Maggie TVS2300 on it that was professionally installed by LPE dealer here in Fl. I was comparing it to my wife's 99 coupe and noticed that I don't seem to have an IAT sensor. I don't have the service manuals for my 02, but I have them for the 99. I am pretty sure it is suppose to have and IAT sensor. I opened up the wire harness and found crimped connections. Two yellow wires, that I assume went to the IAT sensor, butt spliced to lengthen them, then just twisted together at the end and shrink-wrapped. I also found two other wires spliced together at one end of a butt connector and the other connect to a wire going to the throttle positioner.
My question is: does this sound normal for a maggie install, to do away with the IAT sensor? Is it do the heating of the air as it is compressed that IAT is no longer valid? I see there is no place to put the IAT sensor in the duct, like there is with the 99.
but I don't see where else it is either. Read below and you will know why I am not contacting the installer with these questions.
I pretty much stopped driving the car for well over a year because the throttle would stick at around 3800 rpm, numerous times, every time I drove it. I finally found 12 crimped butt spliced in the wire harness to the TPS, where the installer lengthened the harness. I soldered all the splices and my problem was solved. That was only the worst of many problems I have had with this install job. I have no confidence at all in the installer and would never take my car back there. Wish I had just done it all myself, I will form now on.
Anyway, I am wondering if the IAT is normally done away with and compensated for in the tune, with all FI motors. Any help is deeply appreciated.
My question is: does this sound normal for a maggie install, to do away with the IAT sensor? Is it do the heating of the air as it is compressed that IAT is no longer valid? I see there is no place to put the IAT sensor in the duct, like there is with the 99.
but I don't see where else it is either. Read below and you will know why I am not contacting the installer with these questions. I pretty much stopped driving the car for well over a year because the throttle would stick at around 3800 rpm, numerous times, every time I drove it. I finally found 12 crimped butt spliced in the wire harness to the TPS, where the installer lengthened the harness. I soldered all the splices and my problem was solved. That was only the worst of many problems I have had with this install job. I have no confidence at all in the installer and would never take my car back there. Wish I had just done it all myself, I will form now on.
Anyway, I am wondering if the IAT is normally done away with and compensated for in the tune, with all FI motors. Any help is deeply appreciated.
Thread Starter
Burning Brakes
Joined: Feb 2012
Posts: 901
Likes: 2
From: Palm City Fl
Found the IAT sensor,mine is up a little further forward toward the front, but I found it. I was mistaken about the wires going to the throttle positioner, they go to the MAF. I guess all is as it should be except for the cheap A** crimps used by a "Professional" shop!
I am now in the process of soldering all crimped connections. Thanks so much for the post. 
This forum is the most important tool I have ever had. Just fixed the wife's CD changer in the 99 coupe, and again the forum was a big help.
I am now in the process of soldering all crimped connections. Thanks so much for the post. This forum is the most important tool I have ever had. Just fixed the wife's CD changer in the 99 coupe, and again the forum was a big help.
