Stage 3 Fueling questions

[changs4]

Questions regarding injectors: Should I get the ECU custom tuned to run the 440cc injectors ? Can I run the green top injectors with stage 1 program ? For those with upgraded injectors, what do you recommend ?

MAF questions: Is the RS4 MAF a direct plug and play replacement to the S4 Hitachi's ?

TIA.

[AudiSportB5S4]

The RS4 maf does not work on the hitachi plug NO, its a bosch. I run a RS4 MAF with a hitachi sensor.... VAST as part of their fueling kit custom makes the MAFs to fit in the hitachi sensor.

[Tifosi]

Questions regarding injectors: Should I get the ECU custom tuned to run the 440cc injectors ? Can I run the green top injectors with stage 1 program ? For those with upgraded injectors, what do you recommend ?

MAF questions: Is the RS4 MAF a direct plug and play replacement to the S4 Hitachi's ?

TIA.

RS4 MAF runs on Bosch, so you will have to Bosch via the chart below.



You will need custom tuning to run bigger injectors to have them scaled properly, just like if you go to a larger MAF.

Also, you will need RS4 air box (at least the top half) and RS4 accordian hose to fit the RS4 MAF and RS4 MAF housing.

[Das General]

60l# injectors with the corresponding tune is good. Vast and Greg @ SSP do those setups and have great numbers.