I would like to install a LT1 mass air flow senser on my 89 formula 350,is there a conversion kit or possible wiring diagram for this.

 

You will need to change the output signal of the LT1 MAF from a modulated frequency to an anlalog voltage. I think some aftermarket companies have offered a "MAF Translator" or something like that for this purpose.

 

After all that .... doesn;t the ECM have a 255 gm/sec limit that really wouldn;t make the swap practical ?

 

Try contacting Bob Bailey for more info on the MAf Translator.

He has his own website or can also be reached thru Fullthrottle.com

Great guy.

later
Jeremy

 

Yes, the ECM firmware has a limit of 255g/S of MAF measuring capability. The only advantage to using a larger MAF is on larger displacement engines, and at higher RPM where the MAF itself can become a flow restriction. At WOT, the ECM doesn't use the MAF data and operates with fuel trims from tables based on RPM and a calculated load value. The LT1 MAF can theoretically be used to report the correct data to the ECM at lower flows, then provide a larger "duct" for intake air flow in Open Loop Mode.

 

Dont forget the fact that the LT/LS MAF are actually quite cheap and extremely reliable especially compared to the garbage any 80's RWD GM vehicle had.

later
Jeremy