Hey Guys I saw a Pro-m 70mm meter on ebay for a z-tech. Would that work on a 2000 spi intake. Its already calibrated for stock injectors. What do u guys think?

No it wont.

Stock injectors on an SPI are 16lbs.

Stock injectors on a zetec are 19lbs.

So you would have to upgrade to a zetec fuel rail and injectors for it to work correctly.

Also, Pro-M and Pro-Flo have such erratic readings that they're nearly impossible to tune. I have a Pro-Flo that I use as a paperweight.

so what should i use to manage fuel and air ratio for a turbo? I wanted to get my hands on the halteh system but its a bit pricy now a days. I could go with an Fmu and msd ign. but i heard it could run my system to lean at high boost especially with the stock injectors.

If your tuner is worth his oats, you can run your stock MAF. Lidio in Detroit uses only a stock MAF that is recalibrated and relocated to before the turbo. I have seen two of his ZX3's run 13's on stock internals with 42# injectors.