2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

A piggy and a TII

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Old Jul 20, 2002 | 01:43 PM
  #1  
Suds's Avatar
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A piggy and a TII

How possible is it to run a TII on a N/A ECU with a Piggyback fuel computer? Would it be better to just buy a TII ECU?
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Old Jul 20, 2002 | 02:52 PM
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From: Ft.lauderdale,FL
a fuel computer is gonna cost more than a t2 comp,plus the t2 comp has the fuel maps and knock control features that the n/a doen't have.
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Old Jul 20, 2002 | 03:02 PM
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From: FORT WORTH, TEXAS,USA
Got me. I wouldn't think it would work. Look in the factory manual for the testing of the boost/pressure sensor for the turbo, then the n/a. Different readings, right????. N/a never sees boost, How can it have the ignition maps for boost then? Why would it have the igniton maps for boost??

One thing I know for sure. I took a n/a boost/pressure sensor and patched it into my turbo to see what happens. Best of memory the car started acting up as it idled. Never did actually run with it. Gut says it won't work right.
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Old Jul 21, 2002 | 01:09 AM
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From: Tallahassee, FL
The N/A boost sensor is a 1-bar sensor, which means it reads from vacuum to atmo. The TII pressure sensor is a 2-bar unit, which means it reads from vacuum to 14.7ish PSI. If you plug one into the other, it'll work fine until above atmo, assuming the base signals are similar (IIRC, they're not).

Brandon
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