engine stumble on light throttle taps

[Elbowblk]

today i threw in my enthalpy tuned ecu and after a minute or two of idling the car would start to run rough and the rpms would drop to 600-400. i talked to scott at enthalpy and it seems that i forgot to reconnect my maf wire to the ecu since i disconnected to safc2. so i reconnected the maf wire and now the car idles awesome. took it for a low throttle drive and it was okay.

when i lightly tap the throttle the car would seem to bog and struggle. the rpms would drop drop then go back up.

i dont currently have my first and seconday o2's or wideband in since my downpipe is cut off four inches from the turbo for now till i get a new one fabbed up to work with my new manifold. so no afr's for now

so far ive tried new spark plugs, redone the ignition timing, regrounded the maf heres the vid

http://www.youtube.com/watch?v=RT1w9CccP6w

[Infinitiguy19]

Check the wiring and make sure nothing was missed seeing as how the MAF was un-connected.

If that checks out then look into the IACV/AAC.

If thats OK then look at the TPS, Fuel pump and fuel filter.

[DrifterProdigy85]

Can we get a picture of where your MAF is in relation to the turbo? Sometimes if its too close or the intake doesnt have the right bends, it sees a little turbulance creating a stumble like that.

[DrifterProdigy85]

Also the unplugged O2 could cause an issue like that too. My Trans Am is doing the same thing without any O2's.

[biggie]

^, no O2 Sensors on the ECU = bad.

[WDRacing]

^, no O2 Sensors on the ECU = bad.

Yeah dude...you can't expect something to not have issues when you don't have one of the required sensors hooked up. Once the motor is warm it uses the O2 sensor unless you go WOT. Hook up the O2 and you should be good to go. Make sure you reset the ECU once everything is reconnected.

WD

[Elbowblk]

yeah i'll definately fab up a dp and get those o2's in as soon as possible.

have to wait till the floods over. BS new england weather.