Hey All,
VF34, Sti inject.s, and fuel pump...whats the chances I can get away wihout getting engine managment for another month and not having any damage?

Rich

 

wait a month...get the tuning...

 

you DO need an MBC even if you're going to wait for the engine management. that turbo will boost up to 20+ psi at the drop of a hat, so be careful. I recently installed a VF34 and Up-pipe and the boost would hit 20+ Very Very quickly, then the ECU would open the wastegate and it would go down to 9psi and it would repeat that process very quickly, causing a surge effect. Use an MBC to keep the boost down about 14~15psi until you can get it tuned properly.

 

I do not think it's going to run very well since you have the 565cc injectors and the stock programming (ecu) for the 300cc's. I faced the same problem when I installed my stg4(TXS) and wasn't able to get a laptop to load the new map. But good luck, hope everything turns out well.

-SZ

 

drive very carefully, i have all that, i put my fmi, and intake on, im waiting for my utec before i slap the 34, injectors, and pump in.... and im kinda paranoid about it.... good luck, watch your gauges

 

To elaborate on what Sub-zero said, the ECU will send a signal to your injectors to stay open for x amount of time. The STi's flow more volume than stock, so you will be much richer than if you were still on the stock injectors, or without EM. I would imagine the same could be said of the fuel pump, but I've never really read anything about that.

 

I have a vf34, MBC, up-pipe, cat back on an otherwise stock car. it runs fine at about 15 psi. going to check the A/F ratio's and injector duty cycles later this week. i'll post how it goes.