6.0 LS2 / T42 GTO - make trans line pressure TPS dependant?

[02CCSB]

Anyone know how this is done? ie - make the EPC solenoid react to TPS/APPS position rather than MAF/VE?

[joecar]

Can't be done directly in the tune...

and I'm not sure how it would be done outside the tune...

( the PCS solenoid sinks current, this current would have to be inversely proportional to TPS voltage, you would need a voltage-to-current amplifier/op-amp circuit that maps 0.0V-5.0V TPS voltage to 1.1A-0.0A PCS current (inverse relationship) with the ability to supply upto 1.1A...

I don't know of anyone doing this for the TPS->PCS control ).

[02CCSB]

OK, so basically, my options are either dial in that MAF properly (if it is found to not be defective) and/or install a mechanical vacuum modulator in the trans and disable the PCS codes... both are do-able...