advice on tuning with maft

[wishful_laser]

i was wanting to know if any one has close to or similar mods as i do and what settings they have for their maft and safc( not here yet). i dont have an eprom and i will be running 750's and want to run about 20psi with 93 octane. is it possible. im just looking for a baseline here i wont use the exact settings as all cars are different. im a newb to tuning so plz go gently. i also have my fp set at 37 right now(stock pressure for a 1g if i remember right) my mods are in the profile.

 

[beat90tsi]

im just looking for a baseline here

Check the directions that came with your MAFT, it will tell you the baseline for your injectors.

 

[wishful_laser]

i did that and the injectors to my 750's but i was courious as to if n e one else had the same or close to mods as i do and what settings they had

 

[onegee]

I have just about the same type of mods but i'm tuning for 450CC injectors. I've read anything over 660's on a MAFT is hell to tune without a chipped ECU. 750cc and 450cc are a big difference, but i'll post my settings just to give you an idea:



BASE knob 1 (set for 440cc)
IDLE 7
MID 2
WOT 3

Trims (+/- 2%):

LOW 102%
MID 99%
HIGH 98%

You wont find much people trying to get the MAFT to idle correctly and whatnot with 750cc as custom burned chips to compensate for the injectors are so much more less of a headache.

HTH.

 

[dsmchips]

It ain't gonna happen. 20psi on 93 octane with 750's is asking way too much, IMHO. The MAFT will be taking away 40% of your airflow Hz, so the ECU will be back on #7 timing map, with 31 degrees advance, instead of map #12 with only ~18 degrees advance.
Get someone to change your Global Fuel value in your chip, it will make your life much more bearable.

 

[wishful_laser]

so if i was to get ahold of an eprom ecu and then get it chipped for my 750's it would basically think that the 750's are the stock injectors?do you think 15psi is doable with this setup. i am going to be an eprom definitely now. do i just send it somewhere to get it chipped or is it something i can do at home.thanx for all the help guys