PiggyBack Chip on Previously Modded Car
#31
I curious to see pics as I may have the same thing. The previous owner gave me a receipt showing ecu mod (Porsche Module almost $4.5k) in November of 04. I questioned the dealer (Champion Motorsport) but was told records are archived and they would have to remove and bench test the ecu. Anyone have knowledge as to what Champion was installing back then?
#32
ok guys gets your barf bags ready... I found the images and here's the original post and the two pix (I had more but I couldn't do it...):
Hey guys, so yesterday a new customer brings in a modded turbo that he picked up and says the car is stuttering (not plugs), surging and stalling under any type of load. He said the previous owner had it chipped so we started digging around in the back and found a really sweet rats nest
Basically what you see here is a piggy back system spliced into the factory harness with two boxes. The small ones is basically a boost controller of sorts. The entire unit forces the factory boost pressure sensor into reading only .6bar but upon measuring it manually ourselves it was running more like 1.2bar and on 91 etc... From what we could tell the car would run on a stock map until it sensed anything abover 4000rpms and full boost at which time the "piggback" would take over and force the car to do things that when tuned the way it was were not exactly safe.
PS Guys be careful who does the wiring because as you can see there are wires loose, shorted and generally left in quite a mess.
Hey guys, so yesterday a new customer brings in a modded turbo that he picked up and says the car is stuttering (not plugs), surging and stalling under any type of load. He said the previous owner had it chipped so we started digging around in the back and found a really sweet rats nest
Basically what you see here is a piggy back system spliced into the factory harness with two boxes. The small ones is basically a boost controller of sorts. The entire unit forces the factory boost pressure sensor into reading only .6bar but upon measuring it manually ourselves it was running more like 1.2bar and on 91 etc... From what we could tell the car would run on a stock map until it sensed anything abover 4000rpms and full boost at which time the "piggback" would take over and force the car to do things that when tuned the way it was were not exactly safe.
PS Guys be careful who does the wiring because as you can see there are wires loose, shorted and generally left in quite a mess.
#34
Ugh... like I said buddy... that picture gives me nightmares I've seen "Coked-out" 80s stereo installers do a better wiring job than that
#37
Hah no worries and if every any of you guys are buying a car with a piggyback unichip run... or at least take a look inside!
Damn! I knew unichip had packed up and taken their toys elsewhere but I had no idea they were doing servers now
Damn! I knew unichip had packed up and taken their toys elsewhere but I had no idea they were doing servers now
#38
And guys if you want REAL tuning then this is how it's done
http://www.youtube.com/watch?v=JJw8QFp3fVI
and
http://www.youtube.com/watch?v=1G5mx0Tym7A
http://www.youtube.com/watch?v=JJw8QFp3fVI
and
http://www.youtube.com/watch?v=1G5mx0Tym7A
#40
I'm really glad that they did... It means if/when you want to go back to stock it shouldn't be a nightmare like this. There are some good shops in Oz with really good tuning capabilities so make sure at some point you get rid of the piggy back stuff and get a real tune on there that keeps your stock knock safety stuff in tact.
#42
I'm fairly confident there was and still is a bay area tuner that is a proponent of piggybacks. They did unichip and another one with an "X" in the middle of the name. I will never let that tuner touch my car again. Thankfully that experimentation gone awry was on a subaru.
#43
I'm fairly confident there was and still is a bay area tuner that is a proponent of piggybacks. They did unichip and another one with an "X" in the middle of the name. I will never let that tuner touch my car again. Thankfully that experimentation gone awry was on a subaru.
#45
zoikes! a few people on here had commented negatively about it. I believe the owner of the company came on soliciting too before he was banned.