Bought a 98 Audi A4 1.8t Quattro and it wasn’t fast enough for me, so I decided to do a little upgrading. It ran fine before this setup but not after finishing installing everything it will not start. All vacuum lines are connected and all sensors seem to be connected. The very first time I tried to start the car after the setup it did start and run for about 1 sec then stalled out and hasn’t started since. All four spark plugs are throwing a spark and all injectors are spraying fuel although it seems as though they are spraying too much fuel and flooding the cylinders and spark plugs. ECM is not showing any error codes. Any ideas?



Here’s the setup

• T3/T4 turbo setup
• High flow exhaust manifold
• 3in high flow exhaust
• 3in turbo intake feed
• 3in FMIC w/ 3in piping
• Tial 38mm Wastegate
• Greddy Type s BOV (going to switch to DV)
• Stock ECM (getting chipped once car runs)
• Stock injectors (upgrading once car runs)
• Stock MAF housing with stock sensor

 

not to be mean or anything, but wtf woud you do a setup like that without the ecu being flashed? I also think that the 3" fmic and the 3' ic piping is way over kill for that setup. Its not going to be very efficent for air flow. Also stock injectors? you trying to blow it up? even once the car runs, why would you wait for that? The cars not starting because the maf readings are way wrong. It wont throw codes because the ecu doesnt see it for enough time to through. I'm running 2.5" ic pipeing with a 3" intake and its plenty.

 

here is some good things to download. maybe some people will have a good understanding of air flow with these.